hey so ive been trying to get my wideband hooked up to the s300 unit to read, i have a innovative mtx L.. as well the 5volt yellow wire connected to pin d10 ELD. i go to closed loop advance and i change the settings to d10 ELD and set the volts to a/fr table, and change the normal closed loop settings to read wideband band volts target, and disable the eld code as well, but as soon as i upload those change it slowly starts to lean its self out from around 14.7-15.00 till leans itself out and dies. i took the two resistors out of the ecu, and i just got a brand new s300 v3 unit, so i dont think its that. any help would be appreciated will keep doing research and updating.

 

How was the car running before this change, and what ecu was it on? Also what is your engine setup? Sounds like losing fuel pressure to me, but could be a whole range of possibilities without more info.