10.5 afr what to do? 
10.5 afr what to do?
given you are using a wideband and your ltft's are all negative
power enrichment- go down in .02 increments till you see 12.8-13.5 (depends on who you talk to on the a/f ratio, i went for 13.0).
if you are logging with hptuners with your stock o2 sensors then you are looking at the wrong thing. look at 02 millivolts in the histogram- make sure you are looking at the averages. 900 is a tad rich on MY car but every car is different- i am currently .865-.880 and it is 12.8-13.0 a/f ratio (wideband tuned).
come to think of it don't even touch it without a wideband.
power enrichment- go down in .02 increments till you see 12.8-13.5 (depends on who you talk to on the a/f ratio, i went for 13.0).
if you are logging with hptuners with your stock o2 sensors then you are looking at the wrong thing. look at 02 millivolts in the histogram- make sure you are looking at the averages. 900 is a tad rich on MY car but every car is different- i am currently .865-.880 and it is 12.8-13.0 a/f ratio (wideband tuned).
come to think of it don't even touch it without a wideband.
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you should be shooting for 12.8 up to peak torque.....lean it out to 13.0 at peak hp....and richen it back up to 12.9 past that...and go back to 12.8 at shift point....
and if yo uhave 10.5:1 you would see some serious black smoke..and your vehicle wold move like a dog...might even accelerate better at part throttle than at WOT...
how do you know what your AFR is...wideband??? or stock o2's???
and if yo uhave 10.5:1 you would see some serious black smoke..and your vehicle wold move like a dog...might even accelerate better at part throttle than at WOT...
how do you know what your AFR is...wideband??? or stock o2's???
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Thread Starter
Joined: May 2004
Posts: 272
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From: Houston,TX
how do you know what your AFR is...wideband??? or stock o2's???
thanx guys
Originally Posted by sleeperstyle
given you are using a wideband and your ltft's are all negative
power enrichment- go down in .02 increments till you see 12.8-13.5 (depends on who you talk to on the a/f ratio, i went for 13.0).
if you are logging with hptuners with your stock o2 sensors then you are looking at the wrong thing. look at 02 millivolts in the histogram- make sure you are looking at the averages. 900 is a tad rich on MY car but every car is different- i am currently .865-.880 and it is 12.8-13.0 a/f ratio (wideband tuned).
come to think of it don't even touch it without a wideband.
power enrichment- go down in .02 increments till you see 12.8-13.5 (depends on who you talk to on the a/f ratio, i went for 13.0).
if you are logging with hptuners with your stock o2 sensors then you are looking at the wrong thing. look at 02 millivolts in the histogram- make sure you are looking at the averages. 900 is a tad rich on MY car but every car is different- i am currently .865-.880 and it is 12.8-13.0 a/f ratio (wideband tuned).
come to think of it don't even touch it without a wideband.
Ryan