Ok I got my car tuned around march 07... just within the past month or two my a/f has been 11.3-12.3... but right after i got it tuned it was consistent 13.0. i just got done doing a full tune-up changed my spark plugs, oil, oil filter, tranny fluid. I figured it was the spark plugs that was killing my a/f ratio... but it wasnt. car still pulls strong but its just running super rich for all-motor. any idea wat it could be? weather maybe? maybe i need to adjust my valves? maybe i need to retune? i need u guys help please! thanks for looking!

motor = k20a2
mods = i/h/e k-pro

 

Plugged air filter? Bad O2 sensor? Corrupted KPro MAP?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b19coupe &raquo;</TD></TR><TR><TD CLASS="quote">Plugged air filter? Bad O2 sensor? Corrupted KPro MAP?</TD></TR></TABLE>

im thinking it could be the 02 sensor, but how does my MAP get corrupted?

 

If you download it or upload it, it can get corrupted once in a while. Always a good idea to have a back up saved somewhere.

 

different climate......march is somewhat a cooler part of the year. Its now blazing hot. If the fuel compensations were not messed with then its a possible reason.

 

ambient air temperature changes over seasons. B series motors seem to lean out a little in the cold, so you have to adjust the fuel from summer to winter and vice versa

 

Valve adjustment...... Thats where I'd start

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 98vtec &raquo;</TD></TR><TR><TD CLASS="quote">different climate......march is somewhat a cooler part of the year. Its now blazing hot. If the fuel compensations were not messed with then its a possible reason.</TD></TR></TABLE>

That is the first thing I thought of.

I have two maps for my car. One I tuned in February weather (~45deg F) and the other in Auguest (~80deg F). There is a fair amount more fuel added on my colder map.