well since i was out of town for 4 days and all my posts here have since been locked i will respond here. My car only has a Cold air intake and long tube headers and a tune. That is it. My car is still on the stock exhaust and the tune was just to turn off the rear o2 sensors and turn the cooling fans on sooner. I gained 4rwhp from the tune. Like i said it was mainly to turn on and off things. My car only makes 381.4rwhp and 375.9rwtq. I only had a cai the first time alberto and I ran. I did not have the tune done which didnt help much anyways. If there are any other questions please pm me with them.