Trifecta's EFI and Dyno Tuning Services

Looking for maximum power and the dyno sheet to prove it? Trifecta Performance specializes in dyno-tuning GM EFI vehicles. We have experience tuning GM TBI (Throttle Body Injection), GM TPI (Tuned Port Injection), LT1/LT4 engines, Vortec Truck engines, Gen III V8s (LS1, etc), and Gen IV V8s (LS2, etc).
Our approach is a bit different from other engine tuners. Many tuners will charge huge up-front costs because they are estimating they will need to do follow-up tuning work. We only charge for our time. Also, we do not have an expensive shop we expect customers to pay for. No matter where you are, we will find the dyno-shop that is closest to you (and meets our requirements) and set everything up. All you have to do is show up with your vehicle.
Last, but certainly not least, we have the ability to mail you programming updates. Let's say you decide after our appointment that you want your automatic transmission to shift a little more firmly. We can ship you our exclusive GT Tuner with your update and you can update your vehicle yourself.
We also provide general diagnostic services at the rate of $100 per hour, depending on the situation. Give us a call.
We are proud to provide local services to western Washington state including Seattle, Tacoma, Olympia, Bellingham, Everett, Greater Eastside (Kirkland, Redmond, Bellevue, Renton), Kent, Auburn, Puyallup. In WA state, but not in these areas? Give us a call, we will do our best to accomodate.
Dyno tuning prices - effective June, 2007
1986-1993 GM Tuned Port Injection (TPI) $275
1986-1993 GM Throttle Body Injection (TBI) $275
1994-1997 LT1/LT4 $225
1997-2006 Gen III (LS1/6, Vortec, etc) $250
2005-2007 Gen IV (LS2/7, Vortec, etc) $250
The fine print: Prices above do not include dyno time, which can vary dramatically in price. Prices include up to two hours of tuning time, in excess of two hours, the rate is $100/hr. Some vehicles may require purchase of a 'tuning license', which costs $100. Some vehicles may require hardware to be purchased (e.g. TPI) which is not reflected in the pricing. Updates sent out via GT Tuner are $50 + shipping. Updates performed in person cost $100/hr. Outside the Seattle, WA area, transportation expenses may be billed. For a detailed quote, please email us.