John from Pennsylvania switched to Tapout after having unresolvable drivability problems with a competitor’s tune. Our technicians switched over his fuel cam to a properly engineered unit, installed a Gigs ported throttle body and Brisk Silver Racing spark plugs. Then we strapped the car to our DynoJet for a custom dyno tune. The results were a very impressive 632 whp and 669 wtq and a car that drives as smooth as OEM. Specializing in LF4 engines has allowed us to become the absolute best at what we do.

We worked with our partners at Exodus Performance to complete this remote tune for Ken in Texas.  This 2016 ATS-V has one of the best cleanest powerbands we’ve ever seen on 93-octane fuel.

Here is a remote tune we did for Alex in Washington on E48 fuel.  He was over 600 whp all the way from 5,000 to 6,400 rpm!

Jason from Illinois was running a competitor’s ‘ten second package and tune’ before switching over to Tapout.  His car produced a very respectable 598 whp at that time.  We helped Jason remotely to resolve some drivability issues, and made the car a lot more fun to drive.  Then today we strapped it to our in-house dynamometer and unleashed even more power.  His final numbers were 613 whp and 640 wtq!

Breyden shipped his car to us from Texas for Tapout Stage 2 camshafts and valve springs.  Although we originally designed these to be ideal with our much more powerful Caddy Issues turbochargers, they still produce an excellent powerband and sound fantastic!