O2V drops at WOT!!??

[TsiTalon90]

Ive had this problem for a while now i have new motor 2g pistons, metal HG built head with cams, RS60 turbo, 650injectors, Race FMIC with blow threw 3.5in maft and AFCall supporting mods I had an aeromotive FPR but one of the red/blue fitting snapped so im running stock one, anyways it was running fine have the boost at 15 till i get it dyno tuned and it started acting up, at WOT it just sputters and popps doesnt pull at all!! It goes better at 30% throttle . I hooked up my freinds logger and as soon as i hit WOT the o2 voltage dropps to zero, but fine under normal driving conditions, i used the logger a couple months ago to mildly tune the car myself and this wasnt an issue. Anyone know y this would happen?

Thanks Josh

 

[justin0469]

Because you need to tune your car for WOT, increasing your WOT fuel maps on your AFC

 

[TsiTalon90]

No I did do a tune myself, even when the afc wasnt tuned at all i could hit fullthrottle it would pull and hit fuel cut, so we hooked up the logger and had it good running -10 across the board hi and lo on the afc. It just randomly started running like crap and thats when we noticed that the o2 readings no longer read when going WOT.

 

[justin0469]

If o2 readings are low you need to increase fuel flow for that rpm range at wot

 

[TsiTalon90]

Its not that there low, there fine under normal driving coditions as soon as i hit WOT they flatline and the car just sputters and popps suverely.

 

[justin0469]

Ya so for 100& throttle adjust your fuel maps so they are richer

 

[TsiTalon90]

I dont think this is the case. Remeber it was running fine and then randomly stared acting up.

 

[TsiTalon90]

Anyone??