T25 Creeping???

[greenmachine97]

I have a t25 and it creeps. It used to spike really bad too, but my new MBC cured that.

now, when i get on it, the boost will go to like 11psi, then if i keep on it or keep pressing the pedal slowly, the boost will start to creep up to like 15, and then i let off because i dont want to hit fuel cut. i have already done that and it sucked.

1 more ?, i am running 11 psi daily and 15psi track on my t25, do i need to install a larger pump. i have a 190lph fuel pump, and i am considering installing it, but i dont want to go over kill unless i actually need it. thanks in advance

 

[ypnas777]

Its because u have the stock exhaust manifold and O2 housing with a 3" downpipe. If u port the exhaust manifold and the O2 housing it wouldnt creep.

 

[greenmachine97]

Great, thanks. that is what i wanted to hear. will an evo3 o2 housing bolt up to my Apexi DP, or am i just better off porting my own? thanks alot
-kyle

 

[leet]

Originally posted by greenmachine97
Great, thanks. that is what i wanted to hear. will an evo3 o2 housing bolt up to my Apexi DP, or am i just better off porting my own? thanks alot
-kyle

If I remember right, it's at a slightly different angle. If your downpipe has a flex section(it should), you should be able to get it to mate up.

11 and 15PSI of boost is fine on stock fuel pump. Anything more than that, and it's time to start upgrading the fuel system.