wideband results are in, please tell me what you think

[mjjstang]

ok well my car hates me for the first 10 minutes of drivin till it warms up, and it is areally pain in the ass to drive, but after this warm up pperiod, its pretty consistent so i hooked it up to the wideband and i get all kinds of different idle readings because my idle fluctuates so much, but after I drove for a while and idled it, it was a perfect 12.7 (that is good right) its an enthalpy tune sr. its weird, if i let it idle it sounds good but then when i tap the gas a tiny bit, it will go up to about 15afr and then idle shoots up then slowly goes down and then the af goes back to 12.7, also when i was under no load and creeped it up to 3 grand, the afr stuck at around 15, is that normal. when i was driving, the log was like a roller coaster but it seemed to be in the 14.7-15 range quite often. I dont know what im looking for besides the idle looks good, what numbers should I see during normal driving, is there a difference with load and no load. sorry im a newb at this whole tuning thing.

[skatanic28]

at light load and cruise, 14.5 - 15.0 is normal. ive seen people go slightly leaner though.
12.x is pretty rich for an idle.

under heavy load, you should be seeing 11 - 12.5, depending on who made the map.

[MELLO*SOS]

I was expecting you to post an image of a dyno graph showing hp/tq/rpm and AFR? Sounds like you have some o2 logging capability now but aren't sure how to use it effectively. Do a max load run in 3rd or 4th gear from 3000 rpm or so all the way until your redline. This will show your AFR vs RPM under load, and armed with that info along with a list of your mods you'll get much more useful feedback.

As said above, the AFR is very important under high load, and not as important under light throttle (most ECU will lean out the mix during light throttle/cruise to increase mpg).

GL

[mjjstang]

i do understand how to use it, I just dont have a dyno in my garage to hook my car up to, im just messing around with it right now, but wanted to know if some of these numbers are normal. I will be dynoing my car in the future, but right now I have some problems, and dont want to waste my money on the dyno till i fix these probs. ill have the consult plug in a couple weeks maybe and that should tell me more about whats goin on.

thanks for the advise tho, ill try to do some of those runs tonight and log it. my log doesnt show rpm though so its tuff but ill make due.

[RBbugBITme]

Your idle doesn't sound right.

What are you using to log that doesn't show rpm?

[mjjstang]

its the logworks, costs 250 to get the box thhat lets me use a rpm signal, not worth it.