Turbo Kits
Turbocharger kits built and fitted for your platform and power goal. We don't like small turbos — we spec for where the build is going, not just where it is.
Services · Gordonville, PA
Every service, one roof, one dyno
From a first set of bolt‑ons to a fully built EJ on a standalone — the engine work, the wiring, the fabrication and the tune all happen in‑house, and every result is proven on our MD1100AWD dyno.
01 · In‑house calibration
Dyno Tuning
Our MD1100AWD all‑wheel‑drive dyno lives in our shop — so your tune is written, tested and verified on the rollers, not guessed from the street. We use advanced diagnostics and precision calibration to bring out your car's best performance across the whole RPM range, with fueling that's safe to live with.
- Custom calibration on our in‑house MD1100AWD all‑wheel‑drive dyno
- Flex fuel tuning for setups running E85 blends
- Power, fueling and safety verified across the full RPM range
- Dyno rental sessions available if you're bringing your own tuner
Good fit if You want real, verified numbers — and a car that runs stronger, smoother and more efficiently, not just louder.
Book Dyno Time
02 · Remote tuning
E‑Tuning
Not local to Gordonville or Lancaster County? Our e‑tuning program delivers the same custom calibration remotely. You send datalogs from your car; we send back revisions tailored to your exact setup — and we keep iterating until it's right.
- Custom calibration built for your specific parts and fuel
- Datalog‑driven revisions — refined pass by pass, not one‑and‑done
- Available to customers anywhere, nationwide
Good fit if You're out of state but want a Rosa Motorsports calibration instead of a generic off‑the‑shelf map.
Start My E‑Tune
03 · Subaru specialists
EJ Engine Builds
The Subaru EJ is where we live. We handle builds, repair and performance work — from a healthy refresh that puts a tired engine right, to a built longblock designed around the turbo and power target you're actually chasing.
We don't like small turbos. If you're building an EJ with us, we'll spec it to hold the power you really want — the first time.
- EJ engine builds, repairs and performance upgrades
- Longblocks built to match your turbo kit and fuel strategy
- Paired with in‑house dyno tuning so the build and the tune agree
Good fit if Your WRX/STI needs engine work — or you're ready to build it once, properly, for big‑turbo power.
Plan My EJ Build
04 · Platform‑specific
15+ WRX FA20
The 2015+ WRX's FA20 is its own animal, and we treat it that way. We do performance work specific to the FA20 platform — from first bolt‑ons through built setups — tuned around how you actually drive the car, whether that's a daily, a weekend car or something more serious.
- Bolt‑on packages through fully built FA20 setups
- Flex fuel and custom calibration on our AWD dyno
- Upgrade paths planned so early parts still fit the end goal
Good fit if You drive a 2015+ WRX and want platform‑specific work from a shop that knows the FA20's strengths and limits.
Upgrade My WRX
05 · Simplified standalone
Plug & Play ECU Kits
Want modern engine management without cutting up your factory harness? Our plug‑and‑play EMtron kits make the standalone conversion simple — the kit connects to your car, we calibrate it, and you get the control and safety features the factory ECU can't offer.
- Plug‑and‑play EMtron standalone kits — no hacked‑up wiring
- Simplified conversion compared to a full custom harness
- Calibrated in‑house on our dyno, or remotely via e‑tuning
Good fit if Your build has outgrown the factory ECU but you want the cleanest, most reversible path to a standalone.
Ask About EMtron Kits
06 · Full custom
Standalone ECUs
For engine swaps and serious builds, we do complete standalone ECU installations with full custom wiring and tuning. This is the right path when the project demands total control — and it's all done in‑house, from the harness build to the final pulls on the dyno.
- Complete standalone ECU installation and setup
- Full custom wiring harnesses built for your chassis and swap
- Custom tuning to finish the job — one shop, start to finish
Good fit if You're doing an engine swap or a serious build that's beyond what the factory ECU — or a plug‑and‑play kit — can handle.
Scope My Standalone
Fabrication & specialties
Made custom, because off‑the‑shelf doesn't always cut it
Beyond the core services, we fabricate and install the hardware that makes real power possible — built for your car, not "close enough."
Flex Fuel Tuning
Flex fuel setups and calibration so your car runs right on pump gas, E85 or anything in between — with the tune verified on the dyno.
Custom Exhaust & Headers
Custom exhaust and header fabrication that fits your chassis, clears your parts and supports the airflow your build needs.
Engine Swaps
Engine swaps handled end to end — mechanical fit‑up, standalone ECU wiring and the calibration to make it all run like it belongs there.
Custom Fabrication
One‑off brackets, piping and fab work for the parts of your build no catalog covers. Measured, made and fitted in our shop.
Dyno Rentals
Our MD1100AWD dyno is available for rental sessions — baseline pulls, tuner rentals and verification days on real rollers.
Beyond Subaru: WRX/STI platforms are our specialty, but we also take on Chevrolet Corvette and Hyundai performance work. If you're not sure your project fits, call us — (717) 405‑9113.
Now booking
MD1100AWD dyno rentals
Tuner bringing your own laptop? Chasing baseline numbers before a build? Our all‑wheel‑drive dyno is available for rental sessions — reserve your time on the rollers.
Reserve Dyno Time
Get in touch
Tell us what you're building
Send the basics and we'll call you within one business day to talk goals, parts and timeline. No pressure, no obligation.
One shop, start to finish
- In‑house MD1100AWD all‑wheel‑drive dyno — every build verified on site
- Subaru WRX/STI specialists: EJ builds, FA20 work, turbo kits, flex fuel
- Standalone ECU wiring, plug‑and‑play EMtron kits and custom fabrication
- We walk you through your build so you can maintain it and run it safely
Prefer to talk?
(717) 405‑9113Rosa Motorsports · Gordonville, PA — serving Lancaster County and beyond, with e‑tuning nationwide.