Ok here is the deal I barely ever use my EVO 10000 miles its been a year. I seriously drive like a grandma when

 

no ideas???

 

OUCH! stock you're not supposed to boost that much!! 17-19psi's should be max boost tapering down to 16-17psi be redline. you probably have a faulty solenoid valve

 

It's normal to peak at 21psi. If you have problems with boost or better - lack of it, check your hoses, there have been posts that some hoses are not clamped tight and come off and you lose boost. Try doing a search.

 

My car stock also went to 21psi for a split second

 

the post a while back could have been a wastgate problem and what you probably have now is a boost leak problem.. check your hoses, bov and anything else where air flows

 

Well i checked all clamps, hoses etc. It does it when it wants to it seems like it. If it was a hose wouldnt it do it all the time.

 

i guess it

 

welcome to my world, mine is doing the same thing, sounds like. check my thread
http://www.forums.evolutionm.net/showthread.php?t=89642
and this thread, all similar problems
http://www.forums.evolutionm.net/showthread.php?t=88685

 

On A side note I posted about my pulley squeaking

 

here are some pics. this is fun almost 10000 miles on it and already a headache.

 

What are you using for a boost gauge? Sure it's correct?

 

Using a DEFI D Gauge its fine.

 

maybe its a wastegate problem resulting in a overboost which then results in boost cut.

 

what is it that your pointing out in the belt/pulley pictures?