boost creep

[ineedacar]

ok i got boost creep on my 14b like crazy...i have my boost set @15psi and once i get to about 5500rpm or so it jumps to 19 or 20 and then fuel cut...my question is, should i port my wastegate hole some or just buy a 34mm flapper? or do both? and also i heard that if u upgrade to a 34mm flapper it could prevent me from hitting more boost once i turn it up, so is this true or not

thanx
josh

 

[bigjangin]

the 34mm flapper just allows you to port MORE. You will definitely have to do some porting to get rid of boost creep.

 

[jbillakdsm]

If you haven't already, port around the flapper so the arm can open the entire way. I was having the same problem on my car and I did a little porting and polishing of the wasteage hole and opened up around the flapper arm and I have no creep issues now.