when i am at idle my afr goes any where from 11-17 afr i have just replaced the iac because of this issue any idea? attached is my tune.

 

Is the 02 sensor working? Unplugged?
Some info regarding, injectors, fuel pump, regulators etc.... may help.
Evo scan data also is very helpful to measure fueling parameters during idle to see what is going on.
I cant remember the list of items off the top of my head but 02 correction is one of them.

 

injestors 2150s, dual 255 pumps fuel lab regulator 272 kelford cams. i can get a log of idle here pretty soon once i get home i can up upload them. now when u say unlpug 02 you are talking about front 02 or rear 02? and is it safe to do while the car is running?

 

i played with the tune alittle and i got it reguler for now at least lol but now it seems like im running really rich for a idle im at 11.7-12.3

 

how do i upload my evoscan says file type not suported

 

zip the excel file and upload it like you did with the bin.

 

this is one of my idles

 

same idle nothing changed

 

and another one is it a bad 02 sensor?

 

I just looked through your bin file.........you need to smooth out the timing in the idle area. That could very well be the cause of ur oscillation. your injector latencies need some work too. anymods on the car?


ps. Unless you made the timing map the way it is to avoid uncovering the actual map, I wouldn't go wot on this map. that's just me!

 

thats the map the guy tuned it on......... mods: fp black, 9.5/1 compression, kelford 272, ported/built head, buschur bfmic, buschur v-band exhaust. will on maf

 

i myself would have no clue at all about how to adjust timing or any of that for that matter.

 

My suggestion is to go to a reputable tuner in ur area and have them tune it. You have this far with the mods, It would be good to go the extra step for a good tune!

 

That is what I am doing at end of the month

 

I agree with detroit pistins. Need a tune (latencies are off, timing is off at idle). More importantly do not WOT on this!!! The timing is way too high at peak load. Up top is fine.

You need to log O2 Sensor Volts. What's your fuel pressure at idle?