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From 2002-2007, Infiniti was a dominant force in the luxury sports car market with the Infiniti G35 outselling a number of other Japanese, German and American sportscars available at the time.
While the Infiniti G35 is without a doubt one of Japan’s most popular production cars to hit American shores in the last 30 years, the sportscar wasn’t without its flaws.
Enthusiasts wanted more power, crisper handling, and a more refined interior by the end of the 2000s.
How did Infiniti respond?
By creating the new Infiniti G37 coupe in 2008 and once again giving its customers what they clamored for.
The Infiniti G37 featured a new VQ37HR, a completely redesigned exterior, and a more refined luxurious interior compared to its Nissan 370Z counterpart.
While there may not be nearly as many modified Infiniti G37 coupes running around as there are Nissan 370Zs, we know that a large swath of G37 coupe owners love to mod their Gs!
In this tuning guide we will extensively cover the best Infiniti G37 mods and help you make your car handle better, brake harder and accelerate faster.
Ready to learn about the best Infiniti G37 mods available today?
Let's get started!
Infiniti G37 is amongst the premier Japanese sports cars from yesteryear.
It's a great platform to start with if you're looking to get into performance driving at the track or if you want to have a fast and fun daily driver.
However, there are a few things you can do to make it even better!
In this article, we'll go over some Infiniti G37 handling modifications that will improve your car's performance and make handle your favorite corners with ease.
We'll also touch on some of the things you need to watch out for when making these modifications.
Below are some of the most popular ways to improve your Infiniti G37’s handling prowess.
When it comes to improving the suspension on your G37, there are a few different ways to go about it.
For those that are looking for a modest drop and something budget-friendly, adding a set of lowering springs to your Infiniti G37 coupe maybe just be what you're looking for.
While many owners may just go for a set of coilovers to lower their G37, a set of springs coupled with performance struts can often ride and perform better than a set of entry-level coilovers.
Here is our list of recommended Lowering Springs for your Infiniti G37
Purchasing a set of coilovers for your Infiniti G37 is without a doubt one of the most cost-effective ways to lower your car and also improve its handling at the same time.
The beauty of coilovers is that the spring and strut come as one assembly and generally offer a variety of adjustments.
Whether you want to build your Infiniti into a fun weekend toy or a performance-focused track car, purchasing a set of coilovers is your best bet!
Here is our list of recommended Coilovers for your Infiniti G37
Last but not least, air suspension is a great way to both lower your car and improve its handling characteristics.
While most G37 owners that choose to go this route are doing so because they are building a show car, adding a set of air struts to your coupe is a great upgrade compared to stock suspension components.
Another reason that may make you consider adding Air Suspension to your G Coupe is the fact that you can easily raise and lower your car with a flick of your wrist.
If you're looking for the best way to lower your car without the worry of damaging expensive parts during your daily commute, we highly recommend considering having an air strut setup installed on your car!
Here is our list of recommended Air Suspension for your Infiniti G37
Now that we’ve addressed the core suspension components on your Infiniti G37, its time to talk about how beneficial a set of sway bars can be.
When it comes to helping your G37 corner faster, coupling a set of stiffer sway bars with your choice of lowering springs, coilovers or air suspension may surprise you.
While the stock sway bars are adequate for your average commute, adding a set of performance sway bars will help keep body roll at bay and your G planted through your favorite set of corners.
Adding a set of sway bars is one of the best investments you can make suspension-wise, especially if you are tracking your G37 regularly too!
Here is our list of recommended Sway Bars for your Infiniti G37
If you're looking for the icing on the cake when it comes to a “complete” upgrade of your factory sway bars, we definitely recommend purchasing a set of end links to compliment your new sway bars.
Adding a set of adjustable sway bar end links ensure that your new sway bars are able to resist body roll to the best of their ability as you take corners at speed.
Another reason to upgrade your sway bar end links is because of the fact that the factory end links are probably worn and on their last legs.
Now just imagine taking those old sway bar end links and bolting them to a new set of sways bars that increases rigidity by 25-50%!
Definitely not ideal.
Here is our list of recommended Sway Bar End Links for your Infiniti G37
If your looking for a bit of engine bling for your Infiniti G37 coupe you should consider adding a strut bar to help brighten things up in your engine bay.
While strut bars generally aren’t going to add a noticeable difference when it comes to chassis stiffness for your G coupe, some enthusiasts like the look that they add.
Here is our list of recommended Strut Bars for your Infiniti G37
When it comes to adjusting the factory control arms when you go in for an alignment after lowering your G37, you may be in for an unpleasant surprise.
Like most mass-production cars, the Infiniti G37 has a limited amount of adjustment when it comes to toe, caster, and camber.
This limitation is glaringly apparent when you lower your G coupe a few inches and in order to get your alignment back into spec you’ll need a handful of adjustable control arms.
We recommend installing a set of adjustable control arms to avoid the headache at your local alignment shop and to ensure that your tires last as long as possible with your alignment settings dialed in.
For those that want to track their G37 or are looking for more grip on their street car, adding a set of adjustable control arms will also allow you to have your alignment shop set your toe, caster, and camber to your preferred specs to maximize grip.
Here is our list of recommended Control Arms and Camber Kits for your Infiniti G37 -
When it comes to making your G37 handle like it's on rails, some of the mods that we’ve covered aren’t absolutely necessary to transform your car.
Adding a limited-slip differential to your G37 isn’t the most popular Infiniti G37 modification but when installed it will have a dramatically positive effect on how your G drives.
As you may already know, the Infiniti G37 comes from the factory with a VLSD.
The VLSD is okay for daily driving and an occasional spirited drive but you’ll definitely notice its drawbacks when it comes to driving at the track or at your local drift event.
Installing an LSD fills the void that a VLSD leaves when it comes to performance driving and we definitely recommend upgrading to one if you drive your car hard on a regular basis.
Here is our list of recommended Limited Slip Differentials for your Infiniti G37 -
When it comes to modifying your car, choosing a set of wheels is definitely one of the most important choices you can make that can either make or break your car’s style.
Additionally, wheels can also have an impact on how your Infiniti G37 handles because of the unsprung weight that rotates with every turn of the wheels.
Choosing a set of new wheels should be done after a bit of research, especially if your looking for a particular wheel fitment style.
Whether it be similar to stock fitment, maximizing tire sizing for the track or an aggressive stanced look, be sure to look to the Infiniti G37 community for inspiration and to see what kind of work will be required for the size of wheels you purchase.
As mentioned previously, when it comes to pulling off the perfect wheel fitment for your Infiniti G37 it will require a bit of research to avoid issues when you install your new wheels.
Some things to consider when researching your new wheels -
As you can see, when it comes to wheel fitment on an Infiniti G37 there isn’t really a one size fits all template depending on your wheel setup.
However, there are some relatively popular fitments for the G37 that make it easier to narrow down what looks good and what doesn’t to you.
Below are a handful of different style specifications that should help point you in the right direction:
Stock Wheel Specs
Front: 19x8.5 Offset +43
Tires: 225/45/19
Rear: 19x9 Offset +45
Tires: 245/40/19
Stanced Car Fitment
Front/Rear: 18x9.5 +22
Tires: 255/40/18
Front: 19x10.5 +5
Tires: 235/35/19
Rear: 19x11 +10
Tires: 255/35/19
Remember that these specs are just a starting point when it comes to dialing in your fitment. If you need additional information we highly recommend checking out Fitment Industries Gallery for inspiration!
When it comes to modifying and upgrading your Infiniti G37 from a whole car perspective, addressing the stock brake system that your Infiniti came equipped with from the factory to improve performance is a great idea.
If you intend on adding some power to your Infiniti G37 we recommend adding a few of the brake components outlined below so that you can stop on a dime!
Even if you don’t need more power from your VQ37HR, upgrading your brake pads, brake rotors and brake lines will feel like a night and day difference compared to the stock brake system
Let’s take a look at some of the best ways to improve your Infiniti G37’s brakes!
The Infiniti G37 was a mass-produced luxury sports car and because of this fact, Nissan had to keep costs under control when assembling the G37 in Japan.
Now don’t get me wrong, the Akebono brake calipers are a great factory component, blowing the factory Brembos on the G35 coupes out of the water.
But what if I told you you could make your Akebono brake calipers even better?
That’s where a set of aftermarket brake pads come in.
Slapping a set of more aggressive brake pads into the calipers on the front and the back will not only help your G37 slow down faster but I can bet that they will be less expensive than a set of OEM pads.
And that’s what we call a win-win!
Here is our list of recommended performance Brake Pads for your Infiniti G37
As you slowly collect the parts to upgrade your Infiniti G37’s brake system, adding a set of aftermarket brake rotors is worth its weight in gold when it comes to brake upgrades.
While a set of performance brake rotors won’t help your car slow down faster, what they will do is help dissipate heat more quickly so that you can brake harder more often!
This is a great upgrade if you plan on tracking your G37 because of its weight and keeping your brakes cool is one of the best ways to improve your track times and keep you safe!
Here is our list of recommended performance Brake Pads for your Infiniti G37
Rounding out the last part of your brake upgrade list should be a set of stainless steel brake lines.
Adding a set of SS brake lines is a great way to improve brake pedal feedback and ensure that your brake lines will hold up to debris that may be on the road.
Upgrading your stock brake lines is also a great maintenance item to address when servicing your brake system, with the brake lines on the average Infiniti G37 being over 15 years old at this point in time.
Here is our list of recommended performance Brake Lines for your Infiniti G37
One thing that we always like to mention in our tuning guides is the importance of flushing your brake fluid on a regular basis.
If you’re daily driving your Infiniti G37 you should plan on flushing your brake fluid every 15-30k miles depending on your driving style.
For those that track their Infiniti G37s, the general rule of thumb is to flush your brake fluid every track day to ensure that it is up to the challenges of track events.
If you're looking to ensure that everything in your braking system is up to par, we also recommend flushing your system with a few bottles of performance brake fluid.
While not necessary for a street car, having some fresh racing brake fluid in your reservoir is a necessity to ensure that your brake fluid isn’t boiling at the track.
Here is our list of recommended performance Brake Fluid for your Infiniti G37
If you're looking for a brake upgrade that is an improvement over all of the brake upgrades that we’ve already covered, then it's time to start thinking about purchasing a big brake kit for your G37.
A big brake kit will not only mean that you have a bigger brake caliper and rotor but the braking force will also increase significantly.
Because the Infiniti G37 already has the awesome Akebono brakes from the factory, we generally only recommend Infiniti owners that have installed a supercharger or turbo kit on their car or those that heavily track their car purchase a big brake kit.
Here is our list of recommended Big Brake Kits for your Infiniti G37
If you're looking to add some power to your Infiniti G37’s VQ37HR then you are in the right place!
The G37’s engine is a prime example of an engine that is great when kept naturally aspirated and a monster when you add a boost.
By now the VQ37HR has been torn apart and put together a million times by Infiniti enthusiasts looking to extract the most power out of the engine that they can while still keeping it reliable.
For example, you can have a 400hp N/A VQ37HR engine in your daily driven G37 and beat the snot out of it while keeping up on maintenance and it won’t skip a beat!
If you need more power, adding a supercharger or turbo kit to your VQ gives you the ability to double the factory horsepower numbers before needing the pull the engine out for a rebuild with performance parts to withstand boost.
Ready to add some more power to your Infiniti G37?
When it comes to easy bolt-on power, one of the lowest-hanging fruit for your Infiniti G37 is going to be upgrading the intakes on the VQ37HR.
Adding a simple cold air intake gives you the chance to add up to +15 whp depending on the manufacturer and the long or short tube intake that you purchase.
For maximum horsepower gains, we recommend any of the long tube intakes listed below, with the most popular being the Stillen Ultra Long Tube Intake due to dyno-proven best-in-class intake power gains.
While the short tube intakes won’t produce as noticeable of horsepower gains as the long tube versions, for those that daily drive their cars and worry about hydro locking their engines during the rainy season this may be a cold air intake better option for you.
Either way, you go, we can bet you’ll love the roar of the intake after installing a brand new cold air intake to your Infiniti G37!
Here is our list of recommended Cold Air Intakes for your Infiniti G37
Long Tube Intakes
Short Tube Intakes
Adding a new exhaust system to your Infiniti G37 coupe is without a doubt one of the most popular modifications that many owners install on their cars.
Not only does installing an exhaust system increase horsepower and torque across the powerband, but it also has the ability to dramatically change your car’s presence because of the different exhaust notes.
When it comes to upgrading your G37 exhaust system we recommend sticking with a well-known manufacturer to ensure quality welds and factory fitment when its time to install your new exhaust.
If you're looking for the most recommended exhaust amongst G37/370z owners at the moment, check out the Motordyne Exhaust systems.
Not only do they provide a bump in the power department but they also have a unique exhaust note when ordered with the ART pipes that will set your G37 apart from any other car on the road!
Here is our list of recommended Performance Exhausts for your Infiniti G37
After you’ve chosen which exhaust system suits you and your G37 best, it's time to start thinking about running high-flow catalytic converters or test pipes.
We generally recommend running HFCs for legal reasons and because of the fact that when your car is still N/A a test pipe won’t do much beyond making your exhaust even louder!
So unless your Infiniti G37 is a track car, has a turbocharger or you’re willing to take the risk of being potentially ticketed for an illegal exhaust, we recommend purchasing a pair of high-flow cats to keep things simple!
Here is our list of recommended High Flow Catalytic Converters for your Infiniti G37
If you are dead set on running test pipes on your Infiniti G37 it's worth mentioning a few things before you buy yourself a pair.
As we mentioned previously, test pipes on a naturally aspirated car won’t have a significant effect on power output and can lead to potential legal issues with the police.
However, if you have a boosted G37 or run your car only at the track adding a set of test pipes may be worth investing in to increase the flow of exhaust gases through the rest of the system
Here is our list of recommended Test Pipes for your Infiniti G37
If your looking to extract the maximum amount of power from your VQ while its N/A, adding a set of aftermarket exhaust headers is one piece of the puzzle on your way to the 400 horsepower mark.
While the factory exhaust manifolds aren’t terrible, like many other parts on any mass-produced car they can definitely be improved upon.
By just bolting on a pair of headers other Infiniti G37 owners have reported an increase of up to 15 horsepower and up to 35 horsepower with a tune!
Another benefit of headers is that when paired with an aftermarket exhaust they will have a dramatic effect on how your G37 sounds, adding a new note to your exhaust system.
Here is our list of recommended Performance Exhaust Manifolds for your Infiniti G37
Now that we’ve covered all of the basic bolt-on mods for your Infiniti G37 its time to think about how to make them all work in harmony.
The best way to do that?
By getting a tune for your Infiniti G37!
Nowadays the Infiniti G37 is relatively easy to have tuned by a multitude of tuning shops that have an in-house dyno.
If you’d prefer to skip the dyno for another day you can always opt for a mail-in tune that you can install yourself onto whatever tuning unit you end up purchasing.
If you're looking for suggestions we recommend going with an ECUTek unit or the popular UpRev software that most Nissan/Infiniti enthusiasts swear by.
When it comes to the factory 6-speed in the Infiniti G37 and Nissan 370z, it's hard to find a transmission that is as silky smooth and that can hold as much power as the mythical 6-speed can.
But like with all parts of the Infiniti G37, we have a few tricks up our sleeve to make the manual transmission even better!
From aftermarket clutches to lightened flywheels, let's take a look at the handful of ways you can upgrade and improve your Infiniti G37’s transmission!
When it comes to the clutch in the Infiniti G37, the stock unit is about as good as they come in a factory car.
The stock unit has a great balance of pedal feel that’s both springy but not overly hard and can last quite a long time if you know how to drive a stick.
But what about when it's time to replace the stock clutch?
If you’ve upgraded your G37 with a handful of engine mods adding an aftermarket clutch as well may be the best way to go.
Not only will it hold more torque and have less chance of slipping, but more often than not an aftermarket clutch will be a lot cheaper than an OEM clutch from Infiniti!
Here is our list of recommended Clutches for your Infiniti G37
Following up on the important step of selecting the right clutch for your Infiniti, adding an aftermarket flywheel is another important part to consider replacing when it's time to have your clutch replaced.
The big issue that you will run into with the stock flywheel is the fact that it's a dual-mass unit.
What does this mean for you?
Well first off, replacing your worn dual-mass flywheel with a new factory unit is prohibitively expensive, generally costing $1k or more for just the part.
If you want to try and have it refinished like a normal flywheel to help save some cash you may also run into some issues there.
Because of the fact that the Infiniti uses the dual-mass flywheel, you’ll most likely need to find a specialized machine shop that is capable of refinishing the flywheel.
Again this will most likely be a costly way to handle your clutch job and that’s why we highly recommend upgrading to a lightened flywheel!
Not only will it improve your driving experience whether you're in traffic or at the track, but adding a lightweight flywheel will help with your power band due to its reduced weight.
Here is our list of recommended Light Weight Flywheels for your Infiniti G37
When it comes to short shifters for your Infiniti G37, this is modification is without a doubt one of the most budget-friendly upgrades you can make.
Adding the shortened shifter will make your shifts more direct and precise, making the already great 6-speed transmission even more enjoyable during your daily commute or at the track.
Installing a new short shifter in your Infiniti is also a relatively easy process that can be accomplished in an hour or two with basic hand tools.
The result?
An immediate effect on how your car shifts from gear to gear, making you wonder why you hadn’t installed a short shift the first day you drove your G37!
Here is our list of recommended Short Shifters for your Infiniti G37
Now that we’ve covered the basic mods for your Infiniti G37 coupe, let's talk about how to really up the ante with some boost!
When it comes to the Infiniti G37 and its VQ37HR engine, adding a turbocharger or supercharger to the mix is a no-brainer for those that are looking to significantly increase their car's power.
Infiniti owners regularly report the stock block holding up to 500 horsepower and around 400 foot-pounds of torque before being torn apart to increase the reliability factor as they add more boost.
Most G37s are of the boosted variety in today’s world sport twin-turbo kits with the occasional supercharger being added here and there.
So if you're looking to double or even triple your Infiniti G37’s factory horsepower numbers keep reading to learn about which method of forced induction will work best for you!
As mentioned previously, most Infiniti G37 owners that are looking for a big boost of horsepower generally stick with a tried and true twin turbo kit for their VQ37HR engine.
A twin-turbo setup on both the G37 and 370Z has been tested time and time again so your only worry will be purchasing a quality kit and whether you install it or have a shop do all the hard work for you.
Adding a twin-turbo setup on your Infiniti is without a doubt the best bang for your buck when it comes to the horsepower-to-dollar ratio that plays into everyone’s budget when building a project car.
Here is our list of recommended Twin-Turbo Kits for your Infiniti G37 -
Now that we’ve briefly covered turbocharging your Infiniti G37, we think it's only right that you consider the other side of the boost equation - a supercharger!
Superchargers are another way to add some power to your Infiniti and they may be a better option for your car depending on what your power goals are.
The one thing that a supercharger can do better than a turbocharger is to create instant power.
How is that possible you might ask?
It’s because turbochargers require the exhaust gases from an engine to create power, whereas a supercharge is driven by your car’s drive belt, resulting in instant horsepower and torque.
Now it's worth mentioning that if all-out power is your goal when it comes to adding a boost to your Infiniti, you will be better suited with a twin-turbo setup.
But if you want to keep your Infiniti’s smooth VQ powerband and add some more ooof that can’t be achieved with a full bolt-on setup, then adding a supercharger is your best bet!
Here is our list of recommended Supercharger Kits for your Infiniti G37
And that's it! We trust you've enjoyed delving into our Infiniti G37 Coupe Tuning guide, discovering the remarkable ways to customize your Infiniti G37 to your liking.
As you embark on this journey of modifications, we hope our guide serves as a valuable resource for you. For more expert advice and insightful content, we invite you to browse through our other guides.
Thank you for your time, your interest is greatly appreciated. Keep pushing the boundaries of performance with your Infiniti, and enjoy every moment of the drive!
Feature Photo Credit
"Infiniti G37 on CW-12 Matte Grey Machined Face" by CONCAVO WHEELS is licensed under CC BY 2.0
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