Great Experience with Grizzly Tuning!! Trevor responded to my inquiry very quickly and made himself available to help answer a few questions i had. Because of that level of customer service i setup a tune with him!! Even after the tune session he followed up asking how the car was performing. I told him i needed to be faster, now i am saving for a new setup! I will have the fastest corvette on long island with grizzly tuning in my corner! Thanks Trevor!!
Serving Islip★ 5.0 (60+ reviews)5.0 stars from 60 Google reviews
Expert Auto repair in Islip, NY
Auto repair for drivers in Islip, NY, from our shop in Bohemia. Call or text to book your vehicle.
Rated 5 on Google
- 5.0 Stars on Google
- 60 Google Reviews
- Explains Every Detail
- Dyno Tuning Service
/WHAT WE DO
TUNING SERVICES
Dyno tuning, diagnostics, and custom solutions for your build.
Find Us From Islip
FAQ
FREQUENTLY ASKED QUESTIONS
You bring your car in, we load it on the dyno, and we make small adjustments to your ECU map while monitoring performance in real time. We test fuel, ignition timing, boost pressure (if you have it), and other parameters until the engine runs strong across the RPM range. You see the before-and-after numbers, and we walk you through what changed and why.
Yes. We tune for whatever fuel you run: pump gas, premium, E85, or a blend. The tune is specific to your fuel choice, so the engine runs optimally on what you put in. If you ever switch fuels, let us know so we can adjust the map if needed.
Yes. If you have a turbo or supercharger, we integrate it into the tune, handle boost control, and solve any electrical or cold-start issues that come with the modification. We dial it in for reliability and power together.
A typical tune is a few hours, depending on how much testing and adjustment your car needs. Complex builds or electrical troubleshooting can take longer. Call for an honest estimate based on what you're bringing in.
Often yes. We run full diagnostics to find the fault code, solve the problem, and get the car running smooth. Many issues are electrical quirks or sensor problems that we can resolve during a tune session.
We're in Bohemia and work with customers across Long Island. Call to confirm we can work on your specific vehicle.
We're open Monday through Friday, 4:30 to 10:00 PM. Weekends are closed. Book ahead to reserve your dyno time.
Still have questions? Contact Us
Serving Islip
Islip is a south shore hamlet and the namesake of the Town of Islip, with its Town Hall on Main Street and Montauk Highway running through the center. Neighborhoods range from older homes south of Main Street toward the bay to newer streets farther north. Daily driving mixes Montauk Highway, local roads and quick access to Sunrise Highway and the Southern State Parkway. Long Island weather swings from freezing winter mornings to humid summer evenings, and an engine has to start, idle and make safe power across that whole range. Damp bay air near the water also wears on wiring and connectors over the years.
Areas of Islip we serve
- Main Street (Montauk Highway)
- Islip Town Hall
Why Islip customers need this work
Most cars in Islip do double duty: a commute during the week and some fun on the weekend. That calls for a tune that is smooth and predictable in daily use, with safe timing and fueling when you open it up. On the dyno we tune both, logging air-fuel ratio and knock as we adjust. If a fault code or electrical issue is hiding in the background, we diagnose it first, because a tune cannot fix a bad sensor or a failing ground.
Recent work in the Islip area
- 01.Pump gas tune on a stock or lightly modified commuter
- 02.Full tune on an engine swap or turbo build
- 03.Diagnosing an intermittent check-engine light
Why Choose Grizzly Tuning for Auto repair in Islip
Islip drivers who want a car that pulls harder and runs clean can bring it to Grizzly Tuning in Bohemia. We build custom ECU tunes on the dyno for the fuel and parts in your car, from a stock engine to a full boosted build. We also scan and diagnose check-engine lights and drivability problems. Call to talk through your car, then book a weekday evening session that fits around your schedule.
Islip customers choose us because we treat every project like it's our own — no upselling, no surprises, just straightforward work that gets the job done right.
Whether you live in Islip or just need a reliable team nearby, we're a short drive from Bohemia and happy to walk you through every recommendation before any work begins.
From Islip, our Bohemia shop is close by, and we work weekday evenings from 4:30 to 10 PM. We tune every car on the dyno and log the results, so changes are measured instead of assumed. We take time to answer questions before the session and explain what changed after it. For a car that runs stock today or a build with new parts waiting on a tune, give us a call at (631) 507-5593 and we will talk through the plan.
Services We Offer in Islip
Every service below is available to Islip customers. Click any service for full details.