We teach, we don't gatekeep
We pride ourselves on taking the extra time to teach our customers about their builds — how to properly maintain them and safely operate them, so you get the best results out of your investment.
About Rosa Motorsports
Specialized in performance & fabrication
We're a performance tuning shop in Gordonville, Pennsylvania — Lancaster County — building Subaru platforms, fabricating what off‑the‑shelf can't cover, and proving every tune on our own MD1100AWD dyno.
Who we are
A tuning shop that treats your build like ours
Rosa Motorsports is built around one idea: a performance car is an investment, and it deserves work you can see, understand and trust. We guarantee the best service and care to every customer who hands us their keys — whether that's a bolt‑on 2015+ WRX or a fully built EJ on a standalone ECU.
We use advanced diagnostics and precision tuning to bring out your car's best performance. Modern repair methods and custom calibrations mean every vehicle leaves running stronger, smoother and more efficiently than it came in.
And when your build is done, we take the extra time to walk you through it — how to maintain it, how to operate it safely, and how to get the most out of every dollar you put into it.
Shop philosophy
"We don't like small turbos."
It's a joke — mostly. What it really means: we build for real goals, size components properly, and back the result up with numbers on the dyno instead of promises on a whiteboard.
What we stand on
Why customers trust us with serious builds
Everything under one roof — the engine work, the wiring, the fabrication and the tune — done by the same people who answer the phone.
Proven on our own dyno
Our in‑house MD1100AWD all‑wheel‑drive dyno means calibrations are verified across the whole RPM range before your keys come back — and it's available for rental sessions too.
Fabricated in‑house
Turbo kits, custom exhausts and headers, engine swap wiring and standalone ECU harnesses — built custom for your car when the catalog doesn't cut it.
Distance is no excuse
Not local to Lancaster County? Our e‑tuning program delivers the same custom calibration remotely — datalogs in, revisions out, until it's right.
How we work
From goals to dyno sheet
No mystery, no black box. Here's what working with Rosa Motorsports looks like.
- Talk goals, not just parts
We start with what you actually want from the car — power target, fuel, how you drive it — and plan the build around that.
- Build & fabricate
Engine work, turbo kits, swaps, standalone ECU wiring and custom fab — done in‑house with modern methods and advanced diagnostics.
- Calibrate & prove it
Precision tuning on our MD1100AWD dyno — or remotely via e‑tuning — with real numbers to back up the result.
- The walkthrough
Before you leave, we explain your build: maintenance, safe operation, and what to watch for. You drive off knowing your car.
What rolls through our bay
Subaru specialists — and then some
Our core is the Subaru WRX/STI platform, but the dyno and the fab bench don't discriminate.
Subaru
Our home turf: WRX/STI performance builds, EJ engine builds and repair, 2015+ WRX FA20 work, flex fuel tuning, turbo kits and plug‑and‑play EMtron standalone conversions.
Chevrolet Corvette
Performance work and tuning for Corvette platforms — calibrated and verified on the same in‑house dyno as everything else we build.
Hyundai
Performance work for Hyundai platforms, from bolt‑ons to custom calibration, with the same start‑to‑finish in‑house approach.
- Subaru WRX/STI Builds
- Turbo Kits
- Flex Fuel Tuning
- Custom Exhaust & Headers
- Engine Swaps
- Standalone ECU Wiring
- Dyno Tuning & Rentals
- E‑Tuning Nationwide
Now booking
MD1100AWD dyno rentals
Our all‑wheel‑drive dyno isn't just for our builds — it's available for rental sessions. Bring your own tuner, chase baseline numbers, or verify a setup on real rollers.
Reserve Dyno Time
Let's talk
Ready to plan your build?
Tell us about your car and your goals. We'll call you back within one business day — no pressure, no obligation, and we're happy to answer questions even if you're just researching. We're not the cheapest flash‑tune in town; we're the shop that builds it right and proves it on the dyno.
Prefer to talk it through?
(717) 405‑9113- Gordonville, PA — serving Lancaster County and beyond
- E‑tuning available nationwide
- Every build leaves with a walkthrough, not just a key handoff
