Ok i have a UEGO AEM wideband in my boosted civic.
Just wondering what numbers should be reading at:

Idle at normal running temps
Soft acceleration
Hard acceleration...

What numbers should i be seeing on a properly tuned car???

Thanks a lot

Josh

 

around 14.7 at idle, low 12s to high 11s under hard accel and somewhere in between under soft accel.

 

it also depends on how much you're boosting...

i got this from another thread by searching "target afr"

13.5 AFR while NA.
12.25 AFR from 0psi to 3psi.
11.7 AFR from 3psi to 5psi.
11.5 AFR from 5psi to 7psi.
11.5 AFR from 7psi to 10psi.

 

Im runnin 9psi on a Y8 and ive been setting my AF to 11-11.5 and have put over 20,000km on it and i beat it and not aby probs. Ive gone on 91 octane and still have not popped any head gaskets. Another thing to look for is your EGT's

On cruising ive set between 14.-15.0
On light accel 13.5-14.0
On hard accel in lower rpms 13.0
On hard accel in the upper rpms 12-11.0

Josh


Whats ur setup BTW

 

im using a log mani with a t3/04 turbo, 2.5" downpipe and exhaust (will be upgraded to 3" soon)
Tial waste gate, HKS BOV, hondata s300 running 8psi... I have no numbers yet. This is all on a b16b with stock internals
Oh walbro fuel pump, aem fuel rail and FPR, act clutch, ARP headstuds, AEM Cam gears, Precision 525 high impedence and Blitz SBC ID 3 boost controller

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMCRX &raquo;</TD></TR><TR><TD CLASS="quote">Im runnin 9psi on a Y8 and ive been setting my AF to 11-11.5 and have put over 20,000km on it and i beat it and not aby probs. Ive gone on 91 octane and still have not popped any head gaskets. Another thing to look for is your EGT's

On cruising ive set between 14.-15.0
On light accel 13.5-14.0
On hard accel in lower rpms 13.0
On hard accel in the upper rpms 12-11.0

Josh


Whats ur setup BTW</TD></TR></TABLE>

I tuned my turbo B16A2 VTi to these afr's

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMCRX &raquo;</TD></TR><TR><TD CLASS="quote">
On cruising ive set between 14.-15.0
On light accel 13.5-14.0
On hard accel in lower rpms 13.0
On hard accel in the upper rpms 12-11.0</TD></TR></TABLE>

thats pretty much what i target on pump gas too

 

FYI: timing is more important then afr's

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BlackCRX &raquo;</TD></TR><TR><TD CLASS="quote">FYI: timing is more important then afr's

</TD></TR></TABLE>

yeah but you really need a dyno to button that down.

i tune for 15's at idlee
mid to high 14s above 10"
14.0 down to 13.5 from 10" down to 3 or 4"
12.8 at the vacuum-boost transition
12.0 in my nonvtec boost
11.5 in vtec boost