Power loss in my rb25de

[Greg]

seriously - clean your air filter. I was ready to replace my whole exhaust system, but after cleaning the air filter it was fixed. Don't spend money replacing the cat if its ok!!

[LOW25T]

no way its ur cat dude... if the engine is revving out and your not going anyway, there is some problem in the drivetrain, more than likley your auto box

[FATGTS-R]

RTHRTY3:

If you are getting a sound that is like you have a pod, but you dont have one, it might be a leak in your inlet tract. Check all hoses for leaks and any cracks from the airbox to throttle body.

nismo_GTS:

If you want to rule out the filter being dirty as the problem, just remove it altogether and go for a spin around the block.

[BBQ]

Your auto will be slipping; Best bet is to take it to a mechanic that deals with Auto cars.

He can diagnose it from their. If not check your fuel filter/replace it. They can sometimes cause that.

[RTHRTY3]

RTHRTY3:  

If you are getting a sound that is like you have a pod, but you dont have one, it might be a leak in your inlet tract. Check all hoses for leaks and any cracks from the airbox to throttle body.

umm an update, from inside the car it sounded like a sucking noise from a pod, but when you open the bonnet up and listen to it from the front it is more like a scraping noise and is coming from the front half of the engine near the water pump or cam cover area. makes the noise both on and off acceleration between 2000-3000rpm, and the funny thing is it goes away once the car is warmed up and is at normal running temp. :confused: any ideas?