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 224 reviews

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.

Evan Silverberg

stoked to finally find a place that can align my car properly. the owner Dave worked with me to get my alignment 100% on my evo. I was so impressed that i scheduled another appointment for my other car. If your mechanic is sub par definitely check out FAST of West Chester.

John Doorly

Worked with Roy, he set up my 2020 Tesla Y with Koni Active Special Red Shocks. Roy was super responsive & clear with some of my questions. He had my parts ordered & installed in a matter of days. He was the only one that disqualified a prior part that other shops quoted but wouldn’t properly fit my car. Even though I spent more than I wanted to (all the shops were right around same price) FAST WC was upfront & no surprises with cost & now enjoying the much smoother ride for sure. Nice job!

Wyatt

Very painless and fast service. Had an alignment done on my C7 and had it bad in a few hours! Appreciate the dropbox system too, I was able to drop it off safely before opening hours

Dean

Amazing work every single time. Wouldn’t trust my car with anybody else. They take pride in their work and are honest. Lowell is the man if you need anything done!

Jon Wagner

I have a 1995 Mitsubishi that has had engine problems for the last few years. I haven’t been able to find anyone that would take on the work, let alone fix it. Until I found FAST.

The team at FAST listened to me about the issues, ran diagnostic tests, did additional research, and fixed the problem. They even found and fixed a bunch of turbo issues that were sapping power from the car. The car drives like it is new again.

They are now the go-to shop for me!

Osvaldo Borgos

Buen servicio y muy amable el personal

Ben Gregory

Dave and the crew at FAST are professional, helpful, and the work they do is fairly priced. They are always available to help and I trust them with my cars.

Paul Lahm

Quick service, reasonable prices, great customer service

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.