Can i fix boost creep by doing this??

[Jeff822]

Well, right now i have a 3 inch downpipe(no cat) and a 3 inch exhaust and am getting boost creep really bad and is causing a fuel cut , i heard having a 3 inch on stock turbo will give you boost creep. Can i fix this by putting a 2 2.5 inch downpipe and exhaust on my car?, can anybody recommend a good 2 2.5 inch exhaust and downpipe? Right now on extremepsi they have a deal on an apexi n1 downpipe and exhaust but it doesnt say how many inches it is, thanks.

 

[turbo2g111]

The page says piping diameter is 60mm-80mm

Part Number: 147-KM01
Model: Eclipse GSX 1995-1999
Desc: Racing Downpipe
Type: N-1
Piping Diameter : 60mm-80mm

thats 2.36-3.15 inches

 

[dr1ftx3]

How bad is boost creep for the car? Because i pretty much have the same setup as you and I too get creep up to like 17-18 psi, I'm just wondering if i'm hurting the engine.

 

[Jeff822]

Hmm, well thats out. Can anybody recommend a good 2 2.5 inch downpipe and exhaust that will actually connect together without modifications because i will be installing it myself when i get it and dont have the tools to cut/weld and doesnt sound too ricey and possibly a link for it? And i get boost creep up to 20 psi and a little over sometimes then theres a fuel cut, id rather spend the extra money now and try to sell my setup i have now then pay money for a rebuild. thanks again

 

[zippyshoe]

Downgrading to a smaller diameter exhaust may eliminate your boost creep - however, this will also restrict your engine's airflow. An alternative approach is to port your turbo housing and O2 sensor housing as decribed here: http://www.dsmtuners.com/forums/showthread.php?t=186525. This would minimize or eliminate your boost creep without restricting airflow.