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 Sayville★ 5.0 (60+ reviews)5.0 stars from 60 Google reviews
Expert Auto repair in Sayville, NY
Auto repair for drivers in Sayville, 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 Sayville
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 Sayville
Sayville is a south shore community on the Great South Bay, with a walkable Main Street, older residential blocks, and ferry service across the bay to Fire Island. Plenty of cars here live a seasonal life: a summer car or project car that gets driven on warm weekends and stored through the winter. Local driving is mostly Montauk Highway and short trips around town, with Sunrise Highway a few minutes north for longer runs. Salt air and damp bay weather are hard on connectors, grounds and wiring over time, which shows up as sensor faults and odd electrical behavior. A careful check of the wiring is often the first step.
Areas of Sayville we serve
- Main Street
- Sayville Ferry terminal
Why Sayville customers need this work
Cars that sit for long stretches need a tune that starts and idles cleanly after storage, not one that only runs well once it is fully warm. Damp coastal air also wears on wiring and connectors, and a bad ground or tired sensor can throw off fuel trims before you ever touch the map. That is why we scan and check the basics before we tune. Once the car is healthy, we dial in fuel, ignition and boost on the dyno and confirm the results under load.
Recent work in the Sayville area
- 01.Cold-start and idle tuning on a stored summer car
- 02.Diagnosing a sensor fault or wiring issue on a project car
- 03.Retuning a turbo build after a switch to E85
Why Choose Grizzly Tuning for Auto repair in Sayville
Sayville drivers bring their cars to Grizzly Tuning in nearby Bohemia for custom ECU tuning on the dyno. We tune daily drivers, weekend cars and full builds for the fuel they run, whether that is pump gas or E85. We also read check-engine codes and sort out the electrical quirks that keep a car from running right. Call ahead to set up a weekday evening session, and we will talk through your car and your goals first.
Sayville 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 Sayville 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.
Grizzly Tuning is a short drive from Sayville in Bohemia, open Monday through Friday from 4:30 to 10 PM, which suits anyone who works days. We tune on the dyno so every change is tested under load, and we explain the work in plain terms before and after the session. If your car has a fault code or an electrical quirk, we look at that first so the tune is built on a healthy engine. Call (631) 507-5593 to talk it through.
Services We Offer in Sayville
Every service below is available to Sayville customers. Click any service for full details.