12.0-12.5 afr at idle. Is it ok?
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12.0-12.5 afr at idle. Is it ok?
Hi,
Just had my car tuned recently on 91 pump gas. The idle is now at 12.0-12.5 afr. WOT is around 10.0-10.5, and cruise is 14.0-14.5 afr. Is this ok? Just wanted to get some opinions before i head back to the tuner. Thanks!!
Just had my car tuned recently on 91 pump gas. The idle is now at 12.0-12.5 afr. WOT is around 10.0-10.5, and cruise is 14.0-14.5 afr. Is this ok? Just wanted to get some opinions before i head back to the tuner. Thanks!!
#4
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To rich all over. AFR at idle whenever possible should be 14.7
Full boost about 11.5 AFR on gasoline. As long as im around 11.0-11.5 im happy.
For Spool 12.8-13.5
For E85 11.8-12.0 WOT, same for spool as gasoline.
Idling at 12.0-12.5 is washing the cylinders out, so i would try to avoid it if possible.
Full boost about 11.5 AFR on gasoline. As long as im around 11.0-11.5 im happy.
For Spool 12.8-13.5
For E85 11.8-12.0 WOT, same for spool as gasoline.
Idling at 12.0-12.5 is washing the cylinders out, so i would try to avoid it if possible.
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jr_2006IXMR (Dec 20, 2021)
#5
or
MAF sensor needs to be cleaned or replaced
or
bad injector calibration in case you have installed larger injectors.
#6
To rich all over. AFR at idle whenever possible should be 14.7
Full boost about 11.5 AFR on gasoline. As long as im around 11.0-11.5 im happy.
For Spool 12.8-13.5
For E85 11.8-12.0 WOT, same for spool as gasoline.
Idling at 12.0-12.5 is washing the cylinders out, so i would try to avoid it if possible.
Full boost about 11.5 AFR on gasoline. As long as im around 11.0-11.5 im happy.
For Spool 12.8-13.5
For E85 11.8-12.0 WOT, same for spool as gasoline.
Idling at 12.0-12.5 is washing the cylinders out, so i would try to avoid it if possible.
What do you think?
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#8
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Sorry for jacking the thread, but I was about to post about AFR values. I usually tune fuel within the same range as mentioned above. But a few days ago I had to tune a 2.3L Evo with 272 cams & ported head, the turbo is an E9 70 series, phenomenal spool, hitting full boost of 29psi (320 load) at 3800 RPM, I was reluctant to enrich AFR to 11-11.5 at such low RPM, as a compromise I set AFR at 11.9-11.8 at full boost going down to 11.4 by red line.
What do you think?
What do you think?
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