Those of you with wide bands, what is your air/fuel ratios...

Slow LX

Founding Member
Oct 11, 2001
345
0
16
Vernon, N.J.
I just got my wide band and the A/F it seems to be at 12.10 or so at wide open throttle. This is n/a, not on the bottle.

Those of you that are running good, what is you A/F when naturally aspirated?

Where should I be with nitrous 150 shot, under 12.0?

Thanks in advance...
 
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I hover right around 14.7 at idle in closed loop. At part throttle is dances between 15 and 13 depending on the condition. Under boost, I'm pretty solid between 12.1-12.5 until the very end when my injectors run out of room. That's about all the help I can be since I've never run nitrous. Here's a bump for ya.
 
At a warm idle i'm anywhere from a mid 14 to 17:1, cruising i'm 14-15:1 at WOT i'm running a little rich, but its in the low to mid 12's across. I'm trying to tune WOT so it starts out as a low 13 and work its way down to a 12.8:1 or so a/f up top. A wideband kit and a tuning device are 2 awesome and very helpful toys to have!

For a 150 shot, i'd shoot for an 11.8:1 or so a/f. If your on a dyno, i'd tune it slightly richer since the street puts a real load on the car unlike a weak 4th gear dyno pull.