gt35rSI

I was doing a pull the other day on the streets on a cold night and i was in the middle of fourth gear at 50% throttle boosting around 13.5lbs. I noticed my wideband was reading 13.4 and i instantly let off. Is this too lean to be boosting on? Normally i run 10.8-11.3. I have a built motor just wanted a little insight.

Outkast95LS

iTrader: (1)

13.4:1 is definitely on the lean side, especially for a boosted car. You wanna make sure the o2 sensor on the wideband is still reading accurately.. or just get the car retuned.

adseguy

and to add on that that 10.8-11.3 is WAY too rich. You are losing power, fouling out your plugs early, and just wasting gas doing that. Aim for 11.5-12.5

quicksilver1689

11.5-12 is a safe range

coneheadsracing

you say 50% throttle, but still lots of boost. so did you just lift, or were in the process of it??

95dc2teg

if its at 13.5 in full throttle and boosting then i think you would have something to worry about....

slow96coupe

that much boost at 50% throttle???
you running a t25??

JDogg

thats fine at 1/2 throttle.. whats the afr at full throttle

gt35rSI

At full throttle im at like 11.2 most of the time. But change in weather makes me run leaner up to 12.3 at times. I added more fuel today and did a couple of more pulls and got better. Im on 100 oct so not to worried, just didnt know what afr was pushing it.

2point2

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by adseguy &raquo;</TD></TR><TR><TD CLASS="quote">Aim for 11.5-12.5</TD></TR></TABLE>

I aim for 12.0 to 12.5 at the track.