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 238 reviews
I had a shop replace my steering rack and they didnt have the equipment to do an alignment, so I set an appointment with FAST and they did a fantastic job on my 14 Wrx.
Photo from customer review
Great place to do business with. Dave was very patient with all my questions and very knowledgeable. Don’t hesitate to reach out to them
Had my 22 wrx walnut blasted a few weeks ago and had a great experience. I've been emailing Dave back and forth and he's been super helpful with recommendations and thoughts on mods/tuning. I will be going back after I install a tmic and charge pipe to get a pro tune from them. Highly recommend FAST for any type of work you need done!
I got a new clutch installed from here. They were half the price of the dealer and better quality than factory. The service was smooth, fast, and just excellent. I'll definitely be returning!
Dave and his team killed it. My 1995 3000gt vr4 is a hard car to find mechanics that will work on it. They all went the extra mile in installing several performance items along with taking care of some other issues I had. Dave and Roy called me through out the process of having the car to keep me in the loop of what was going on. 14 years ago Dave and the FAST team worked on my WRX. Always goes above and beyond. This is the only shop I’ll let work on turboed cars.

Thanks Dave and the FAST Team 🍻
Photo from customer review
Got work done on my FL5 Type R at FAST.
Fantastic experience, very experienced shop, honest and good people, good communication, and fair pricing because they know what they’re doing on this platform. Their Honda master tech is extremely experienced and detail oriented, which I appreciate.

Got these done things done and likely will be doing some other things down the line:
- Spoon Rigid Collar Kit
- OEM Alcantara Steering Wheel
- OEM Rear Metal Sway Bar End Links
- WOT Cooling Plate
- Slightly more aggressive alignment (which came out basically perfect after looking at alignment sheet)
- 1 step thicker transmission fluid change (post break in period)
- 1 step thicker oil change (post break in period)

Car already is amazing from factory, but these things dialed it in perfectly for our local areas. Highly recommend getting these things done at FAST if you have an FL5.
This is an absolutely solid shop. Hands down. Extremely nice people, great at communicating questions, comments, and concerns to the customer, and overall a reliable service experience!

Long story short, I went in for an issue I’ve been having for a while, and the dealership I got my car from (CarMax) was absolutely the worst staff and kept beating me around the bush about using my warranty, this, that, and the third.

Went to FS of West Chester and did a walnut blasting that ended up not fixing my issue. But I took it back to them, and they were able to actually do a real diag and find my issue. And they did. And it maybe took a week all together for them to do that diag, get the part, install it, and test my vehicle. Super quick.

Now, I’m not going to lie. Their labor costs are a bit high. BUT at the end of the day, you’re paying for quality work, and that’s exactly what they are. Quality shop, quality work, and quality customer service. I will be going back for any other repair jobs I may need.

Keep up the good work Fast!
Absolutely amazing work. Will be coming back for sure with the BRZ and Impreza for the future!
Photo from customer reviewPhoto from customer reviewPhoto from customer review
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
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!
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!
Photo from customer review
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.
Photo from customer review
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.
Photo from customer reviewPhoto from customer review
FAST goes above and beyond. Very trustworthy staff, quick turnaround, and excellent communication.
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!
Call us: (267) 603-2786

Trusted Auto Repair & Collision Services in West Chester, PA

Book an Appointment Online

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.

FAST of West Chester
I had a shop replace my steering rack and they didnt have the equipment to do an alignment, so I set an appointment with FAST and they did a fantastic job on my 14 Wrx.
Photo from customer review
Great place to do business with. Dave was very patient with all my questions and very knowledgeable. Don’t hesitate to reach out to them
Had my 22 wrx walnut blasted a few weeks ago and had a great experience. I've been emailing Dave back and forth and he's been super helpful with recommendations and thoughts on mods/tuning. I will be going back after I install a tmic and charge pipe to get a pro tune from them. Highly recommend FAST for any type of work you need done!
I got a new clutch installed from here. They were half the price of the dealer and better quality than factory. The service was smooth, fast, and just excellent. I'll definitely be returning!
Dave and his team killed it. My 1995 3000gt vr4 is a hard car to find mechanics that will work on it. They all went the extra mile in installing several performance items along with taking care of some other issues I had. Dave and Roy called me through out the process of having the car to keep me in the loop of what was going on. 14 years ago Dave and the FAST team worked on my WRX. Always goes above and beyond. This is the only shop I’ll let work on turboed cars.

Thanks Dave and the FAST Team 🍻
Photo from customer review
Got work done on my FL5 Type R at FAST.
Fantastic experience, very experienced shop, honest and good people, good communication, and fair pricing because they know what they’re doing on this platform. Their Honda master tech is extremely experienced and detail oriented, which I appreciate.

Got these done things done and likely will be doing some other things down the line:
- Spoon Rigid Collar Kit
- OEM Alcantara Steering Wheel
- OEM Rear Metal Sway Bar End Links
- WOT Cooling Plate
- Slightly more aggressive alignment (which came out basically perfect after looking at alignment sheet)
- 1 step thicker transmission fluid change (post break in period)
- 1 step thicker oil change (post break in period)

Car already is amazing from factory, but these things dialed it in perfectly for our local areas. Highly recommend getting these things done at FAST if you have an FL5.
This is an absolutely solid shop. Hands down. Extremely nice people, great at communicating questions, comments, and concerns to the customer, and overall a reliable service experience!

Long story short, I went in for an issue I’ve been having for a while, and the dealership I got my car from (CarMax) was absolutely the worst staff and kept beating me around the bush about using my warranty, this, that, and the third.

Went to FS of West Chester and did a walnut blasting that ended up not fixing my issue. But I took it back to them, and they were able to actually do a real diag and find my issue. And they did. And it maybe took a week all together for them to do that diag, get the part, install it, and test my vehicle. Super quick.

Now, I’m not going to lie. Their labor costs are a bit high. BUT at the end of the day, you’re paying for quality work, and that’s exactly what they are. Quality shop, quality work, and quality customer service. I will be going back for any other repair jobs I may need.

Keep up the good work Fast!
Absolutely amazing work. Will be coming back for sure with the BRZ and Impreza for the future!
Photo from customer reviewPhoto from customer reviewPhoto from customer review
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
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!
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!
Photo from customer review
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.
Photo from customer review
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.
Photo from customer reviewPhoto from customer review
FAST goes above and beyond. Very trustworthy staff, quick turnaround, and excellent communication.
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!
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!
Excellent customer service and Excellent work! Thanks guys! Love the lift!!!
Great shop
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!
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.
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.
This is the best place to take your car. Guaranteed work, and Roy and Dave's kindness is top-notch. God bless you, guys.
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.
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!