Performance & Customization

Performance & Customization in West Chester, PA

Whether you’re looking to enhance performance, improve handling, or build something truly unique, FAST of West Chester offers professional performance upgrades and vehicle customization tailored to your goals.

From subtle bolt-on improvements for daily drivers to fully customized performance builds, our experienced technicians work closely with you to design upgrades that balance performance, reliability, and drivability. We take the time to understand how you use your vehicle — street, track, show, or weekend fun — and recommend proven components and configurations that deliver real results, not just numbers on paper.

FAST of West Chester is a COBB Pro Tuner and IAG Certified Installer, authorized to sell and install EcuTek, Haltech, and Link ECU systems, and equipped with a Dynojet AWD chassis dynamometer for accurate, real-world performance tuning.

Serving drivers from across the country, we provide performance and customization services backed by experience, quality parts, and attention to detail.

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🔥 2012 Subaru WRX – RB26 Engine Swap (“Heavy Mental Machine”)

One of the most talked-about projects FAST of West Chester worked on was a 2012 Subaru WRX that received a Nissan RB26 inline-six engine transplant — a swap that’s extremely rare and challenging.

Instead of the factory Subaru EJ flat-four, this WRX was fitted with a 2.6 L Nissan RB26 turbocharged inline-six (from an R34 GT-R), significantly boosting power and torque.

FAST of West Chester handled the complex engine and transmission fitment, chassis modifications, and custom fabrication work needed to make the drivetrain and AWD system fit — including firewall modifications, new subframe components, and transmission crossmembers.

This build was featured in automotive media and became known for its unique combination of legendary powertrain and all-wheel-drive Subaru platform, producing over 700 hp and showcasing the shop’s fabrication and tuning expertise.

This project stands out as an example of FAST’s ability to tackle ambitious and unconventional builds that go well beyond typical bolt-on performance upgrades.

One-Off Custom Builds & Nationwide Performance Services

FAST of West Chester is a performance-focused automotive shop in West Chester, Pennsylvania, specializing in import performance builds, with a strong emphasis on:

Subaru (WRX, STI, BRZ, Forester XT, etc.)
Honda (Civic Si, Type R, S2000, Accord, etc.)

Core Services

Performance upgrades & bolt-ons
Turbocharger & supercharger installs
Engine builds & rebuilds
Dyno tuning & ECU calibration
Suspension & brake upgrades
Track prep & race builds
Maintenance for modified vehicles

Why Enthusiasts Choose FAST

Deep experience with Subaru boxer engines (EJ & FA platforms)
Honda performance expertise (K-Series, B-Series, turbo setups)
Custom tuning tailored for street or track
Performance-driven approach rather than general repair focus

If you’re looking for more details like location, contact info, dyno capabilities, or reviews, let me know what specifically you need and I’ll narrow it down for you.

Custom Performance Tuning & All-Wheel Drive Dyno Services

FAST of West Chester offers professional performance tuning and calibration using our in-house all-wheel drive dyno, allowing us to safely test and optimize vehicles under real-world load conditions. Our experienced team specializes in precise ECU tuning and performance calibration for both stock and modified vehicles.

Vehicles We Commonly Tune:

Subaru (WRX, STI, BRZ, Forester XT, etc.)
Honda (Civic Si, Type R, S2000, Accord, etc.)
Other Performance Platforms (including AWD and turbocharged vehicles)

Core Tuning Services

All-wheel drive dyno testing & performance analysis
Custom ECU tuning & calibration
Dyno tuning for turbocharged and supercharged setups
Performance baseline & power verification runs
Air-fuel ratio and boost optimization
Dyno tuning for modified or built engines
Performance diagnostics and drivability refinement

Local Drivers. Real Results.

FAST of West Chester4.9

Based on 232 reviews

Daniel Seymour

Absolutely amazing work. Will be coming back for sure with the BRZ and Impreza for the future!

Alexander

Awesome service my Subaru working great very happy with the work there’s a reason they have 4.9 stars Dave your the man thank you for taking care of my Subaru

Daniel Gura

Outstanding service and quality. A seamless experience and I will be returning once I can figure out what to do next on my car. Top notch in the area!

Adam Bidegary

I brought my 2009 Subaru Impreza in for head gaskets and timing belt replacement. I added on a few other items since they were in there. It was an expensive job, but I knew that going in. This car is what my kids drive and they put a lot of miles on it and now I can rest easy knowing it is going to go another 100k and not leave them stranded. Thanks Roy and Dave! I had a great experience and will definitely be recommending you guys to friends! Thank you!

Skye Cartwright

I was referred via a friend and decided to give FAST a shot. They totally blew me away with incredibly quick/attentive customer service and wicked quick respray a panel that fuel had etched below the clear coat. Literaly took less than half of the estimated time. I'm 110% happy with the work and they will be my first option when needing anything going forward.

Matt

Fast of West Chester’s team did an amazing job on the install of my body kit along with paint matching the parts and hood. Everything lines up great and the paint match looks phenomenal for a vehicle being 27 years old. They cleaned up my car nicely at the end and even removed the yellow haze on my headlights. They are an honest shop that does great work and take pride in what they do.

James McCain

FAST goes above and beyond. Very trustworthy staff, quick turnaround, and excellent communication.

William Meighen

Customer service here is next level. The owner Dave emailed me back after hours on a weekend, and he’s a real car guy. He drives the same kind of WRX I have, just with about 500 more horsepower (yes, you read that right, it’s FAST, pun intended). I liked what he had to say so much that I booked an appointment for a J-pipe install (no way I was risking breaking turbo studs myself). Dave was so helpful that I ended up buying extra parts to install the same day and adding a dyno tune to finish it all off.

The tune blew me away. The car is shockingly quick now. The tuner didn’t just slap on an off-the-shelf map, make one adjustment, and call it good like some of the bigger WRX shops and “popular” tuners for the VB do. He did multiple dyno pulls (at least five) and really dialed everything in perfectly. Best part for us old-school Subaru fans: Ray Arroyo (the legend from TurboTek) handles the tuning. That alone is huge.

When I got home and put the car on jacks, everything looked perfect: no leaks, bolts torqued right, clamps secure, parts aligned spot-on.

Pricing was fair compared to other performance shops, and FAST clearly knows Subarus way better than most. I’d have happily paid even more for the service and efficiency I received.

The shop itself is clean and welcoming. The guy at the front counter was super friendly, waiting room is comfortable with multiple screens showing dyno data, plus a TV, coffee/water, and a cool little merch area. Way nicer than your average shop waiting spot.

Super happy with FAST—their work, the tune, everything. I’ll definitely be back for more. Highly recommend!

Sonia Joy

I've had my car taken care of here a couple times. The guys here are honest and such kind people. You really made me feel at home and it was easy to trust your opinions on what was going on with my car. Thank you!

doug rider

Excellent customer service and Excellent work! Thanks guys! Love the lift!!!

Tim Herron

Great shop

Andrea

FAST of West Chester is top notch. Dave and Roy are very responsive, knowledgeable, fairly priced and I completely trust them with my vehicles. They go above and beyond for their clients and I highly recommend. Thank you Dave and Roy!

Leo

I came here for a safety inspection. I could tell upon walking in that this place was well organized. My appointment details and paperwork were already organized and ready. Waiting area was well maintained and clean and prices are very fair. Would definitely recommend this place and come here for other services.

Tom McNicholas

Honest. I can't tell you how valuable it is to find honest and competent mechanics. They were pleasant to deal with, made things easy and convenient and worked thoroughly and quickly.

Moises Aguilar

This is the best place to take your car. Guaranteed work, and Roy and Dave's kindness is top-notch. God bless you, guys.

Call us: (267) 603-2786

Trusted Auto Repair & Collision Services in West Chester, PA

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Automotive Care You Can Trust

FAST of West Chester provides complete auto repair, routine maintenance, performance customization, custom tuning, one-off builds, and collision services for drivers throughout West Chester and surrounding Chester County communities. Our experienced team is committed to honest service, quality workmanship, and clear communication every step of the way.