Car is chokeing at low part of throttle

[LTUDSM]

here is the log,Got Idle and some short cruise logs.
any suggestions on where i should look at?

 

[MY1GDSM]

You running very rich up to 2500rpm in the very first bit of the log then pegging out lean.

Reset your Fuel trims zero out you Maf comp for the most part or adjust it aside from where your afr is close and Readjust your Maf comp. while watching you Maf Raw and ARF from the wideband to see what points your lean/rich and adjust accordingly... .

Here is a screen shot...

Blue is you AFR is should be close to steady even with the point marked as that is 14.7 you can se how lean after that point and rich before it is

The red "V" is you o2 adjusting it's so far out of wack that it' bottoming out pulling out 25% fuel before trying to add the fuel back.

 

[LTUDSM]

You running very rich up to 2500rpm in the very first bit of the log then pegging out lean.

Reset your Fuel trims zero out you Maf comp for the most part or adjust it aside from where your afr is close and Readjust your Maf comp. while watching you Maf Raw and ARF from the wideband to see what points your lean/rich and adjust accordingly... .

Here is a screen shot...

Blue is you AFR is should be close to steady even with the point marked as that is 14.7 you can se how lean after that point and rich before it is

The red "V" is you o2 adjusting it's so far out of wack that it' bottoming out pulling out 25% fuel before trying to add the fuel back.

well i drove the car todfay to see if any changes,but now it feels more like a missfire ,then chokeing, no cel nuttin comes up.... plugs,wires ,o2 sensor are new,not really new,but round 1200 miles.....

 

[MY1GDSM]

Your Airflow calibration is still off though. Your trims are that far off for a reason... . I would imagine if those wideband readings are right you would have some driveabilty problems.

 

[LTUDSM]

yes , the car jerks alot when im in a traffic goin 20-30 miles an hour. i will adjust the values to your suggested points and see where it will put me. BTW can you check my OpenLoopMaxOct table at low throttle? and my timing map? thanks....

 

[MY1GDSM]

What would you like me to say about them?

I would go about how your controlling you meth injection a bit differently is about all I can say... And those maps look a bit odd to me. How much meth are you injecting and how much boost are you running?

Also I'm sure your fairly close to what's your trying to do in the Top end so juat concentrate on adjusting your RAW Airflow from 0 to about 250hz then 5-600hz at first if things are in line up top I wouldn't change much in the top end aside from going about thing a differant way... .

 

[LTUDSM]

What would you like me to say about them?

I would go about how your controlling you meth injection a bit differently is about all I can say... And those maps look a bit odd to me. How much meth are you injecting and how much boost are you running?

Also I'm sure your fairly close to what's your trying to do in the Top end so juat concentrate on adjusting your RAW Airflow from 0 to about 250hz then 5-600hz at first if things are in line up top I wouldn't change much in the top end aside from going about thing a differant way... .

im running 50 water and 50 meth mix. running 27 psi of boost.

 

[LTUDSM]

Well today i fixed my jercking, chokeing problem. I was surprised ,that 23nd brand new NGK plug wires set could faill. I went to advance autoparts,bought some cheap wires just to check,and here we go,car drives smooth,rpms are steady,and finally can tune closed loop ft......... NGK Wires SUX!!!!!! Will never purchase these again,will be going with Taylor or MSD ones......
Problem Solved.......

 

[mattasi]

Wow that's crazy, I have never had any NGK wires fail, not that it doesn't happen though. I have had accel and msd wires fail on me. That suck to hear about the ngks, they are the only ones I will use. So did you make any changes to your tune, because it sounds like something needs changed?

 

[LTUDSM]

well i need to tweek more airflow at idle,because the car wasn't idling good with this problem......