Well recently I have done a few mods to my car and everything was running fine. I added an intake and a MBC. I was running right around 20 pounds for a few days and everything was all good. Then a few days ago I would hit 20 pounds and about 4-5 grand just drop off to 15. Then 2 days ago I could not boost more then 12 pounds. Now it will just boost up to about 15-16 and drop off to 10. So far I checked just about everything that I thought it could be. All vaccum lines are on and all the hardpipes are on and clamped down. So my next step was thinking that it was the boost controller, took it off put a friends on and it still does the same thing. The next thing I thought was that it could be the ****ty stock bov. So I take that off put on my buddies greddy type-s and try it out with that, same results. Now I am starting to get a little pissed off and wondering what the hell it could possibly be. The only thing that I am thinking is maybe is the intercooler pipes with all that rubber leaking somewhere or if its not that could the stock intercooler be ****ed up and maybe I blew a weld somewhere? Anyone who experienced this problem before and can help would be great.

 

i am having a similar problem. just curiuos, can you hear the bleedoff. and does the car keep pulling all the way to redline with the boost constant where it bleeds off to, or does it just keep blowing off.

marc

 

Can not hear the bleed off at all, and it keeps pulling all the way to redline at 10 pounds.

 

Try to pressurize all the lines from turbo to throttle body. We expierenced something like that with an old EVO IV so we had to remove lines, hoses, I/C, etc..assemble everything out off the car and place it under water with 30psi. You will see if something is going wrong and where the leak is located (in our case it was a crack in the I/C pannel after been hit during the accident). Let us know how it goes....if this not your problem weŽll look to any other part.