Here’s a stock GT500 vs on with pulley, intake, long tube headers, and tune:
There are many tricks to tuning these cars correctly and we’ve got over 12 years experience in doing them. We offer the same Drivability Guarantee! Not happy with the way the car drives? We’ll retune it NO CHARGE as long as there are no mechanical issues! Need to pass emissions? With the introduction of the OBDII Readiness tests in New England it’s harder than ever to get heavily modded cars to pass! We can help! Have you installed High Flow Cats and got the dreaded “Wrench” light? That’s because the emissions requirements after 05 tightened up so much that virtually every high flow cat doesn’t have enough precious metals to be efficient enough. We have a fix for this! As a matter of fact, if we tuned your car we’ll guarantee you’ll pass the test and get your sticker. We even run a “simulated obdii readiness test” on the car when you leave to make sure it’s ok.