New exhaust and intake but my cars actualy slower?

[bleakz87]

I got a K&N typhoon intake and a Magnaflow cat back exhaust and it feels like I actually lost power. Is it because the computer needs to get used to the new amount of air from the intake or something?

Any help would be great?

 

[lestat13]

When I first installed by Cobb SRI it didn't feel slower, but it didn't feel faster, and the car was a bit jumpy. By the third or fourth time I took it out, if felt much smoother. By the time the week was out, it felt great and I could tell it was faster.

I think they say drive 5 times for the ecu to adjust. So if it still feels messed up in a week, post back up, we'll be here to trouble shoot!

 

[Raynman]

Your car is still operating with the long fuel trims from having the stock airbox. Unplug your battery terminal then plug it back in after a couple of minutes. This will reset the ECU's long fuel trims.