Only boost to like 8lbs of boost and it like surges or flutters not sure how to describe it.. I've checked all the couplers and everything. No idea. Help!

 

Post up your modlist puhleeze! Has the car always behaved like it does now? Have you made any recent changes or mods? How are you controlling boost BTW?

 

The boost pressure reminds me of an old evo my X wife had. Her catylitic converter was all busted up inside and she was getting only 8psi of boost.

 

Ok so it was always fine. This winter did DNP headers, megan racing o2 housing and downpipe. I took it out went to town it was fine 20psi then coming back was only like 10lbs but at that time i didnt know my valve cover was cracked, shooting oil out. finally got a new one and all back together today and here we are

 

Oh and controlling boost is all stock. Also had an injen intake and catback exhaust when i bought it 3 years ago.

 

is it possible the stock boost solenoid crapped out? i was told mine wouldnt allow the tuner to go past 18. im not too fond of the tuner though so i could be mistaken..

 

That is possible since it was working fine then just wasn't..

 

Happen to know the part # ?

 

Thinking bout trying a MBC to see if that makes a difference..

 

Does it sound like it has an exhaust leak? I'm not really a fan of the cheaper aftermarket manifolds. They all tend to crack really bad, but you would need a bad crack for it to only boost 8psi.

Mikey

 

Do a boost leak test, check plugs & cat!

 

I believe the stock solenoid number is MN153089 but you could always hook up a gm 3 port boost solenoid there's plenty of threads on here how to.
I just used a mbc but make sure you have a boost gauge if you don't already.

 

definitely make sure you have no leaks or clogged cat before jumping to any conclusions but an aftermarket boost controller won't hurt in the future

 

Didn't think DNP $650 was a cheap manifold. But the guy that is gonna tune it said to get a MBC before tune anyway. Ill haveto check the cat next

 

Made a boost leak tester tonight. But When i put air in boost gauge doesn't move. Doesn't seem like anythings happening