so, long story short, the car has throttle tip-in problem. runs like crap when driving until its up to temp. not as much but problem still occurs when engine gets fully warmed

the main thing, afrs go lean during this tip-in. from 14.7 to ~15-16's and even 17's if not warmed fully. car bogs and hesistates if not let off the throttle. problem is not such noticeable past 3000-3500 rpm. mainly when cruising at 2000-2500 and tipping the throttle from there

so, my dilemma is, is it a spark or fueling problem ?

about lean condition was considering this way and correct me if I'm wrong: car misses spark and wideband sees unburnt mixture as air and thus reading lean.
or the engine really gets too lean and spark can't ignite mixture and the car bogs


any help is greatly appritiated, what to look for, spark or fueling



p.s. spark plugs are fairly fresh ones, NGK 7 heat range coppers, gapped to 0.6 mm

 

there is some coolant temp retard tables to look at. Also i believe there is a afr coolant temp table.

I zeroed out my coolant temp table because I let it warm up pretty decent before I rock it. I havent had sucess in getting coolant temp vs AFR tables set up correctly, but again, a few minutes of warming up is my only remedy for my car. Im sure there is better tuning I can do. See what you can do with those 2 -3 tables. Running in full time open loop, exacerbates these coolant temp problems drastically.

 

what rom are you using ? I have 96530706 V7 rom, cant find such tables in there, what are they called exactly ?

as a side note, it's pretty cold over here, 30-40 F

 

as the problem appeared after it got cold over here can't it be some kind of other compensation tables fault ?

can anybody explain how these tables act and what to change in them ?

Relative Air Density vs Temp for Airflow/Hz
Airflow/Hz Baro and Air Temp Compensation

 

How is your FPR doing? It might be "leaking off" some of your fuel pressure and as soon as you start to go into boost buildup the pressure keeps it shut.

Just a thought