alright everyone so i got an aem wideband and i installed it only took a few minutes but any ways when im driving and slowly push down the gas the gauge reads any where from 14.6-14.9 and from what i have read that is pretty normal and that is a good place to have your a/f ratio but my question is that when im driving and i WOT 1st 2nd and 3rd the gauge reads 10.1 and will only go up to about 11.0 at best and is that how it is suppose to work or am i just running that rich and any one who can help me i would like that thanks for all the help

 

Sounds like your running rich to me. I have that same gauge and running my current fuel maps I idle and cruise right around 14.3-14.6. Boosting under WOT I drop to about 11.2 and climb to about 11.8 right before high RPM shift. I know when my alcohol injection starts spraying because my A/T fuel at WOT drops to 11.4 or so vice 11.8.

 

Cars (especially boosted ones) from the factory will come running rich. Normal closed loop operation is about 14.5. Open loop (WOT) is what can be adjusted manually. Generally, closed loop is maintained by the computer. For boosted cars, a ratio of 11.7ish is where you want to be. Normally aspirated is the 14.5 talked about above. Being rich robs you of power, but adds protection to the motor (more fuel is better than more air). You can lean it out by having some sort of tuning device or if you are careful, do it by adjusting your boost controller.

 

so the 10.1-11.0 is normal when i WOT and you said i can fix that with a boost controller how would i do that exactly because i do have a mbc and also if i get a fuel controller would that help as well thanks for all the help guys

 

yes its normal and no it isnt broken.
Your power isnt optimum performance with that a/f ratio, but that doesnt mean you HAVE to adjust it. By slowly turning up boost, you can essentially "lean out" the a/f mixture to a more desireable ratio (ala 11.5ish). Just be careful though, too much will blow up the hamsters spinning that powerplant of yours. The stoich air ratio is just as much important in the high rpms as the low. Also, depending on the ECU, the computer may not like a drastic increase in boost and it will retard your timing.
Many things to think about

 

ok perfect so i turned my MBC up to about 17psi and now at WOT it is at around 11.3ish and thats about where it should be right and 17 psi wouldnt be to much boost right and if all of this it right then all my problems are solved thanks for all the help. ALOHA