lik a second after it does

 

its a Greddy Type -S one spring conversion...i think its from the bov being backwards and throwing all the air back in a spinging the turbo backwards and the fin or the turbine fins bent

 

after i heard the bov sound i
d hear the flutter of the turbo being spun backwards

 

bump

 

Where in NJ are you?

 

central right by east brunswick

 

If you want to drive an hour down to Mount Laurel I will look at it and tell you what is wrong with it. If your interested we can set something up, it's an hour drive.

The ultimate test for boost though is to remove the hose from the wastegate and carefully drive the car up to boost and see what you get. The wastegate is opened by presure and if you remove the hose it will not open so you will have plenty of boost if it exists. This is why I said to drive it carefully.
There is a procedure to do this in the service manual to check for boost by eliminating all the boost controls.

 

I'm having a similar problem with my EVO boost, if I accelerate slowly in lower RPM's, the boost is fine, as I get on it, its sounds like the turbo is over spooling, but I loose a lot of power. My gauge reads 1.5 bar, then drops to around .5. Also if I shift into any gear from a higher RPM, it looses all boost. Not sure if it is a leak or wastegate??? Any help would be appreciated....

 

Sounds like a leak somewhere.

 

I'll do a test and check it out , thanks dude...

 

anyone think i bent the fins on the turbine? or the shaft?

 

does that occur through the whole RPM range?

 

Could the leak be coming from my BOV, I bought a MR BOV, does anyone know how much boost they can hold?

 

well i WAS having the same problem.. most boost i could get was 18-19.1 lbs.. did everything i though replaced gaskets.. blah blah blah... well it turns out it was the BOV... leaking hard... threw the stock one it.. problem solved.. so now im gonna get me a MR bov.

 

my problem started when I had the stock one on, then I put a MR on, but the leak is still happening... It is driving me nuts....