Boost Creep on stock turbo? Rb25det

Discuss the RB20, RB25 and RB26 series engines.
streeteg
Posts: 395
Joined: Sat Mar 31, 2007 2:58 am

Post

Rb25det, downpipe, exhaust, front mount, atmospheric bov, greddy intake manifold stock ECU

I get 7 lbs pretty much as soon as boost comeso n but @ 6000 I start to creep all the way to 11--- anyone have any ideas?


User avatar
lucky7
Posts: 1326
Joined: Tue May 03, 2005 4:31 pm
Car: 97 RB25 S14

Post

i had a similar issue with my stock turbo. im pretty sure the wastegate was sticking though. it was kind of scary sometimes. if i hit the gas, i'd hit WAAYY too much boost. lol.

User avatar
Kansei240sx
Posts: 1356
Joined: Mon Nov 01, 2004 10:17 am
Car: S13 - RB25 Circuit car
71 240z - street/track day car
AE86 - Daily Drizzle/track day car
Z31t - Paper weight/street car
Contact:

Post

Try port matching the wastegate hole to the flap so it flows better. I had to end up doing that with mine on my AM performance downpipe.

Cjmartz2k
Posts: 1845
Joined: Sat May 19, 2007 1:39 pm
Car: Hunting for a '89 GTR now
Location: Okinawa, Japan

Post

Sounds typical for a 25 with an opened up exhaust and an intake. 11psi isn't to much. Just tune for it. You can try opening up the WG hole inside the turbo too if your really worried about it. Also, maybe one of these................. http://stec-motorsports.com/en...m=003


Return to “RB20DET / RB25DET / RB26DETT Forum”