what is the target a/f ratio at idle?

 

Wouldn't it be 14.7:1? That's what the stock ECU is trying to run at idle at least..

 

i normally run it as lean as it wants to. there is no magic number, give the motor what it wants

 

I run mine at 14.7 and it works just fine.

 

yup...the a/f is going to fluctuate a bit at idle. You want around 14.7 and as lean as 15.3 will work as well.

Danny

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by R6Elmo &raquo;</TD></TR><TR><TD CLASS="quote">yup...the a/f is going to fluctuate a bit at idle. You want around 14.7 and as lean as 15.3 will work as well.

Danny</TD></TR></TABLE>
Ahh..good point...with the OBD2 setups, the a/f ratio sweeps back and forth until it finds 14.7

 

I believe 14.7:1 is optimal for a ratio of power to fuel consumed. The reason the computer seeks 14.7:1 is that the narrowband can only really read 14.7:1. In the range of 16:1 will probably give you the cleanest emissions.