Ok, Im still have a definite issue with boost creep. I've searched every site there is imaginable for boost creep and came up with this post. This guy has the exact same problems I do, read on please:
http://ferrari.colowatch.com/php/showthreaded.php?Cat=&Board=ENDYN_Tech&Number=7777 &Search=true&Forum=All_Forums&Wordsverboost&Match=Entire%20Phrase&Searchpage=0&Limit= 25&Old=allposts&Main=7777

I came to a conclusion that its possibly my drag manifold since it only has #1 runner to vent exhaust gasses it cannot keep up at high rpm? I cannot resolve this problem.... I have now took the manifold off and I don't wanna do it but I might just try to put another hole maybe in the center ? If I enlarge the runner #1
do you guys think I might fix it by doing so? I've tried enlarging around the wastegate not the actual hole but around it, it helped a little but now with the addition of a 3" downpipe, its back and worse.

I have a 4 pound tial spring, it will boost fine until 5000rpms then by 6300rpms I have 9psi. Everything is hooked up correctly, I've bypassed the boost controller, I've connected the source line from the turbo to the wastegate, I've also tried to connect the source line from the intake manifold still the same. The wastegate starts to open at 1 pound and will keep open. Any suggestions??? mainly porting??


[Modified by LsTurbo91, 5:58 PM 10/22/2001]

 

What is your exhaust piping diameter? I hope it is at least 2.5" and preferably 3" full from dp back. That helps with boost creep. Other than that, I'll let someone else jump in here.