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..

 

suggest exhaust restriction

 

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

 

cat could have collapsed and plugged up

 

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

 

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

 

Take the downpipe off and look inside.

Not hard to remove.

 

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

 

nothing a grinder cant cut apart or sawzall

 

Are u serious?? Ohh boy...

 

im serious too lol

 

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..

 

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

 

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