WRX Open-Source Tuning: Atlas for VA and VB Subaru WRX
Learn how open tuning works on the VA and VB Subaru WRX, including Atlas, compatible cables, ECU flashing, datalogging, COBB differences, and safety limits.
Performance Modification Guides and Reviews
ThinkTuning makes it easy to find the right parts to improve and modify your car.
Top Subaru WRX / STI Modifications
See all WRX / WRX STI mods
Best Wheels for Subaru WRX: VA, VB, STI Fitment and Offset Guide
Compare the best Subaru WRX wheels for street, track, value, and rally builds, with VA, VB, and STI sizes, offsets, tires, and brake-clearance guidance.
Best WRX Exterior Mods: VA, VB, and STI Appearance Upgrades
The best WRX exterior mods depend on chassis, fitment, and how permanent you want the change to be. This guide covers VA WRX/STI and VB WRX exterior upgrades, including mud flaps, front lips, rear fog lights, plate relocation kits, overlays, rain guards, and carbon trim.
Best WRX Lowering Springs: VB, VA, STI, and Older WRX Guide
The best WRX lowering springs depend on chassis, drop height, damper condition, alignment budget, and whether you have a VB WRX, VA WRX, VA STI, or older GR/GV WRX/STI.
Best Subaru WRX Mud Flaps: Rally Armor vs RokBlokz, VB, VA, and STI
The best Subaru WRX mud flaps depend on chassis, clearance, material stiffness, and whether you want rally style or subtle paint protection. This guide compares Rally Armor, RokBlokz, OEM splash guards, and budget alternatives for VB, VA, STI, and older WRX fitment.
Best WRX Coilovers? VB, VA, GD, street, budget, and track picks.
Best WRX coilovers for VB, VA, GR/GV, and GD chassis cars. We break down fitment by generation and compare the strongest coilover options for daily driving, spirited road use, and serious performance.
Best Subaru WRX Shift Knobs: VB, VA, STI, and Older WRX Picks
The best Subaru WRX shift knobs depend on chassis, material, weight, and reverse-lockout fitment. This guide covers 2022+ VB WRX, 2015-2021 VA WRX/STI, older 2002-2014 WRX/STI fitment, and what to avoid before buying.
Best Subaru WRX Interior Mods: VA, VB, and STI Accessories
The best Subaru WRX interior mods make the cabin easier to live with and more satisfying to drive. This guide covers VA WRX/STI and VB WRX interior accessories, including shift knobs, floor mats, shifter upgrades, cup holder liners, LED lighting, trim, storage, and CVT-specific picks.
Best WRX Catback Exhausts: GD, GR, VA, and VB Guide
The best WRX catback exhaust depends on whether you have a GD, GR/GV, VA, or VB WRX/STI, and how much sound and drone you can live with.
Best 2015-2021 WRX J-Pipes and Downpipes: Catted, GESI, and Green Speed Notes
The best 2015-2021 WRX j-pipe depends on your tuning path, emissions rules, and transmission. Here is the current catted downpipe guide after COBB Green Speed.
Best WRX Axleback Exhausts: VB, VA WRX, and STI Muffler Delete Guide
The best WRX axleback depends on chassis, muffled vs muffler-delete sound, drone tolerance, and whether you have a 2022+ VB WRX or 2015-2021 VA WRX/STI.
Best Subaru WRX Intakes: VB and VA WRX Cold Air Intake Guide
The best WRX intake depends on whether you have a 2022+ VB or 2015-2021 VA WRX, and whether you want an OTS-supported, CARB-friendly, or custom-tuned setup.
Top Subaru BRZ Modifications
See all BRZ / FRS-S / 86 mods
Best Interior Mods for BRZ / FR-S / GT86
While the Subaru BRZ, Scion FR-S, and Toyota 86 may have a decent enough interior, most people would appreciate some extra little comforts or just some personalization.
Best Coilovers for BRZ, FR-S, Toyota 86, and GR86
The best coilovers for a BRZ, FR-S, Toyota 86, or GR86 depend on generation, ride-height goals, tire grip, and street-versus-track use. This guide covers 2013-2020 ZC6/ZN6 and 2022+ ZD8/ZN8 fitment, quick picks, product cards, owner-review themes, and setup notes.
7 Best Shift Knobs for BRZ / FR-S / Toyota 86
Installing a shift knob is a great way to personalize your car's interior, and one of the easiest mods for your BRZ to install. Not only can you pick something unique that looks good to you, but with a weighted shift knob, your shifter will glide from gear to gear with ease. These shift knobs fit Subaru BRZ, Scion FR-S and Toyota 86, and are easy to install in minutes. We've compiled a list of our favorites below.
Best BRZ, FR-S, 86, and GR86 Supercharger Kits: First-Gen and Second-Gen Picks
The best BRZ, FR-S, 86, and GR86 supercharger kit depends on generation, emissions requirements, tuning support, and power goals. Here are the current first-gen FA20 and second-gen FA24 kits worth shortlisting.
Best BRZ, FR-S, 86, and GR86 Exhaust Systems: First-Gen and Second-Gen Picks
The best BRZ, FR-S, Toyota 86, and GR86 exhaust depends on generation, sound goals, and whether headers are next. Here are the street, loud, premium, and budget picks worth shortlisting.
Best BRZ, FR-S, 86, and GR86 Turbo Kits: First-Gen, Second-Gen, Street, and Track Picks
The best BRZ, FR-S, 86, or GR86 turbo kit depends on generation, emissions requirements, power target, tuning support, and supporting-mod budget. Here are the current kits worth shortlisting.
Find The Right Tires For Your Car
Best Subaru Crosstrek Tires: All-Weather, All-Terrain, and Winter Picks
The best Subaru Crosstrek tire depends on whether you want quiet daily comfort, one-set snow capability, light-trail all-terrain grip, or dedicated winter traction.
Best Nissan 350Z Tires? Summer, all-season, or winter.
If you're looking to get the most out of your Nissan 350Z, tires are the first place you should start. While it's tempting to install other mods for better performance, tires are the final piece that puts the power to the pavement. If you can't get enough traction to put the torque down, you're losing power to wheel spin. Choosing the right tires for your driving conditions will help your car to handle and perform at its very best.
7 Best Nissan 370Z Tires? Summer, all-season, or winter.
The Nissan 370Z is a very well handling and capable sports car. However, just like any car, it's only as good as the tires. Your tires are the final piece of the car, where all of the power and driver input must go through. It's often overlooked by some drivers, but you need quality tires and the right ones for your driving conditions to get the most out of your car. While many enthusiasts install an exhaust as their first mod, tires are really the most important.
9 Best Tires for BRZ / FR-S / Toyota 86
Tires are top of the list of performance parts for any car, believe it or not. All of your suspension upgrades and engine upgrades will be held back if you can't get the power down to the ground.
Best Subaru WRX Tires: Daily, Summer, All-Season, Winter, and Track Picks
The best Subaru WRX tire depends on climate and use: summer performance, ultra-high-performance all-season, all-weather, winter, or 200TW track/autocross tires.
Engine Guides
See All Engine Guides
Nissan VQ35DE Engine Specs & Problems You Need To Know
If you're looking to keep your 350Z or G35's engine in top shape, or thinking of buying a car with with a VQ35DE, then we've got everything you should know.
Subaru EJ25 Engine: Specs, Reliability, & Biggest Problems
Looking to buy an EJ25 powered Subaru, or just keep yours running in top shape? We've got everything you need to know.
Subaru FA20 Engine Specs, Information & Common Problems
Looking to learn more about the Subaru FA20 engine? While it's been used in a number of Subaru and Toyota vehicles, with many owners happily driving along for many years, it's not without its kinks that need to be worked out and issues of concern. After personally driving and modifying FA20 powered cars, and researching everything there is to know, we've compiled this guide.
Most Recent Posts
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WRX Alignment After Lowering: Camber, Toe, Tire Wear, and Parts
Learn what alignment changes after lowering a Subaru WRX, when you need rear camber or toe correction, and how to choose street-friendly settings for VA, VB, STI, and older EJ cars.
Subaru WRX Transmission Fluid: Type, Capacity, and Change Interval
Find the correct Subaru WRX transmission fluid, gear-oil capacity, and service interval for VA, VB, EJ, manual, CVT, and SPT cars.
Subaru WRX Reliability by Year: Common Problems and What to Check
How reliable is the Subaru WRX? Compare EJ, FA20, and FA24 generations, common problems, modified-car risks, maintenance priorities, and the checks that matter before buying.
Subaru WRX Boost Leak Symptoms and Diagnosis Guide
Learn how to recognize Subaru WRX boost leak symptoms, find common FA20DIT and FA24DIT leak points, and pressure- or smoke-test the system before blaming the tune.
Subaru WRX Walnut Blasting: FA20DIT Intake Valve Cleaning Guide
Learn when a 2015–2021 Subaru WRX needs walnut blasting, what carbon buildup does to FA20DIT intake valves, how the service works, what it costs, and whether DIY cleaning is worth the risk.
FA20DIT Common Problems and Reliability: 2015–2021 Subaru WRX
A practical FA20DIT reliability guide for the 2015–2021 VA Subaru WRX, including carbon buildup, knock, boost leaks, oil consumption, tuning risks, and inspection advice.