boost creep trouble

[eclipsed4G63]

i have a 95 gst, n1 exhaust rre 3inch down pipe high flow cat, rre upper intercooler pipe greddy type s, injen intake, i just but the down pipe on and i have really bad boost creep in third gear at wide open throttle i get like 20 psi all with the stock fuel system how bad is this for my car and what should i do to fix i was thing about an o2 sensor housing with dump tube any body know of a reasonably price one, i dont have a boost contreller yet either what shoul i do first? thanks for the time.

 

[G-Ell]

I'd say your problem lies in the o2 housing. With that 3" DP, you've just made it easier for the exhaust to just keep going threw there, rather than out the Waste Gate. Take a look at the Vendors list on DSM.org and see who's got the best deals right now.

20psi on the stock feul system = BAD

Actually, some boost controlers have a feature that compensate for over boost too, but I wouldn't use that as a solution.

 

[larryd]

porting your o2 housing would help alot, an o2 dump tube would be even better but the T25 is always going to creep a little bit

 

[pilotleston]

What is an "o2 dump tube"? is it a tube to route the gases from the WG to the exhaust again or just to route them out? Is it used with internal WG too?