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S Chassis Technical discussion related to the S Chassis such as the S12, S13, S14, and S15.


 
 
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Old 01-26-2012, 08:52 AM   #1
Nicelyphe
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SR S13- SR- Gas going fast!

1993 S13
S13 Blacktop SR20DET
Stock stock stock..
Exhaust/FMIC/HKS SSQV BOV/WALBRO PUMP/z32 Fuel Filter/ NGK Iridium Plugs .030 gap
7lbs Stock wastegate

Alright my car has been burning through gas like crazy. A quarter and a half of gas within a 30 minute highway drive going a steady 60. Can literally just watch my gauge move haha.

There is no smell of gas inside/around the car. No black smoke. ECU throws no codes.

Could this just be a bad float? Could something else be pushing the car to burn through gas like this? Bad FPR, injectors, pump?

The ECU that came with the blacktop was a "62" that just recently fried. Now using a "63" since no one around here has a "62". Could this cause gas consumption issues? Some people say the 63 ECU has a diff fuel map vs. the 62, can someone verify that?

How to go about diagnosing this?

EDIT: Car also boosts too 9lbs. Also has just recently started.

Thank you.

Last edited by Nicelyphe; 01-30-2012 at 09:08 AM..
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