boost creep with 2.5" turboback??

[Mits3gts]

i finally put my 2.5" RNR turboback with test pipe on today,everything fit perfect and sounds great..but i have a problem now, car pulls strong and when i get to about 5500rpm i get boost creep to about 15-16lbs and fuel cut...i still have the stock o2 housing,you guys think thats my problem? i thought boost creep was more common on 3" systems....thanks

 

[spades_gsx]

I get boost creep also with a 2.5". mine would spike to about 19 then settle at about 14-15psi. at one time my boost controller was installed wrong and it would shoot upto and hold at about 24psi. my t-25 went on strike shortly there after.