Quote Originally Posted by jyupitt1 View Post
I already have the race exhaust installed, the brochure says 5 % gain. My question is do any of the aftermarket ecu tune offer ADDITIONAL gains with this exhaust. Thanks.
Well my car has the RSC Race exhaust on it which makes near identical power to the Lamborghini race exhaust, and we made an additional 23whp on my car on a mustang dyno with our ECU Flash.

If you want to do a baseline first, then have us tune it, if you are unsatisfied with the tune within 30 days we will refund you.