2nd and 3rd gear not holding boost - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

indebt240drift · 06-25-2006, 01:42 PM

any one know why an sr20det might start backfiring once half boost is hit in second gear...i know stock sr's only put out 7psi, so ive been told, 11 if you remove something, but i just put on a boost gauge and its reading 16psi when i rev it to 6 grand!!!!!! it only does it when im on tar also, if im burning out on tar, or on dirt with no traction, it doesnt do it, anyone with any knowledge wanna chime in , itd be appreciated

looks slow · 06-25-2006, 02:49 PM

wow, sounds leike maybe you need to stop buring out on "tar" and reving your engine to 6 grand until you figure out why its over boosting.

All these back fires might be fuel cut becuase your overboosting....

also, should I even ask why you didnt have a boost gauge on it to start with ? : shakes head :

TAMTANIUM · 06-25-2006, 04:27 PM

check your wastegate line and etc. I think something is wrong with your wastegate line connecting somewhere.

06-25-2006, 01:42 PM	#1
indebt240drift Join Date: Jun 2006 Location: Maine Posts: 1 Trader Rating: (0) Feedback Score: 0 reviews	2nd and 3rd gear not holding boost any one know why an sr20det might start backfiring once half boost is hit in second gear...i know stock sr's only put out 7psi, so ive been told, 11 if you remove something, but i just put on a boost gauge and its reading 16psi when i rev it to 6 grand!!!!!! it only does it when im on tar also, if im burning out on tar, or on dirt with no traction, it doesnt do it, anyone with any knowledge wanna chime in , itd be appreciated

06-25-2006, 02:49 PM	#2
looks slow Join Date: Jun 2006 Location: South Carolina Posts: 26 Trader Rating: (0) Feedback Score: 0 reviews	wow, sounds leike maybe you need to stop buring out on "tar" and reving your engine to 6 grand until you figure out why its over boosting. All these back fires might be fuel cut becuase your overboosting.... also, should I even ask why you didnt have a boost gauge on it to start with ? : shakes head :

06-25-2006, 04:27 PM	#3
TAMTANIUM Zilvia FREAK! Join Date: Apr 2005 Location: Socal. wc Age: 38 Posts: 1,022 Trader Rating: (1) Feedback Score: 1 reviews	check your wastegate line and etc. I think something is wrong with your wastegate line connecting somewhere.