In all gears i have 10psi up to 3500 rpm and at the transition i drop to 8psi then to 5 psi. I'm a newbie so any help is apperciated. Has anyone had a similar problem.

 

on full throttle after transition try and see if you let off the gas for 2 seconds then back on if you still only see 5 psi or if it goes up to 10. if not I would say after you come to a stop pop your hood to see if your precat is glowing.

 

could also be your turbo manifold might had a cracked in betweent the wastegate..

 

i going to the pre-cat tomorrow if it is that then ishould get a downpipe.. Is it safe to run a downpipe with an intake and a catback with the stock ecu. Will I hurt the car will it run to lean.

 

i going to the pre-cat tomorrow if it is that then ishould get a downpipe.. Is it safe to run a downpipe with an intake and a catback with the stock ecu. Will I hurt the car will it run to lean.