DevZX

Hey guys so the other day in a first gear pull at around 5k rpms the car lost power for a split second then immediately afterwards started hitting boost with a slight tap of the gas with a whistling noise after about 12lbs... It hits about 15lbs now which used to only hit 12... I replaced both bypass valve and solenoid and it still does it. What could it be? BTW the car is gm stage 2 with zzp pcm... Thanks guys..

Powell Race Parts

iTrader: (3)

suggest exhaust restriction

DevZX

Would it have come up so random like that if it was an exhaust restriction?

07blackg5

iTrader: (8)

cat could have collapsed and plugged up

Staged07SS

iTrader: (25)

Check your cat if u have one. Could be clogged and causing the restriction.

DevZX

Hmm alright.. I know I have a cat but how do I check if its clogged? I've herd about going uphill in low gear if the car barley goes it could be clogged but I have no hills around me.. Lol

Staged07SS

iTrader: (25)

Take the downpipe off and look inside.

Not hard to remove.

DevZX

Previous owner welded the entire exhaust system together..lol..

Dipped_Cobalt

nothing a grinder cant cut apart or sawzall

Staged07SS

iTrader: (25)

Are u serious?? Ohh boy...

Dipped_Cobalt

im serious too lol

DevZX

Yeah I bought a catback and was about to put it on then saw the horror... I should look into a header/downpipe soon and cut that crap off.. Haha.. But also want to make sure its the problem first.. Don't want to mod it without fixing this big issue..

Kolt

or take out your o2 and use a boroscope or tiny mirror on a stick lol

DevZX

If it ends up not being an exhaust restriction what else could it possibly be?