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jbrown's Avatar
Join Date: Mar 2006
Location: highland mills NY
Posts: 556
A/F readings

Have not been on in a while but most of you know my car.. It is running great but my gas mileage is so-so. I have a GT35 turbo billet wheel. I just touch the gas and I have 5 lbs boost. Great spooling turbo with EFI. My question is at low boost 5lbs and under I drop down to 12.5 to 12.1 A/F ratio. Is that right or can I lean it out alittle to save some gas.
THere is really no heavy load on the car at that boost level.
Thanks John
83 sc cab turbo widebody. 3.5 liter supertec motor, B&B headers, EFI electromotive TecGT, TurboKraft GT35R billet turbo, 964 cams, WM inj, Bell full bay intercooler, Short bell housing turbo 4 speed tranny, roll bar, hargett shifter,
Old 06-23-2017, 08:07 AM
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Uwon's Avatar
Join Date: Jan 2011
Location: Ontario, Canada
Posts: 1,293
12.5 on boost is safe and appropriate. It's the AFR when cruising, which is most of the time in normal driving, that will gobble up your gas mileage. You should be at 14-14.7. And older cars are likely not to give as good mileage. MHO
Living well is life's best revenge- George Herbert (1593-1633)
2006 C2S, A4 Quattro, the RST hot rod-
Old 06-24-2017, 05:48 PM
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