Originally Posted by Mr.sentra_specv
i would pull the iacv off and clean it out. get a fsm and use it to check out your air regulator as well. its hard to see but how close is your maf to your turbo? have you used a wideban o2 sensor to see what afr you are running? there is also the possiblity of an air bubble getting stuck in the iacv area and messing with that so double check the coolant and make sure its air free. as for calums ecu with cold start that part of the ecu doesnt get changed. the ecu that you had calum work on was it the ecu that was in the car originaly? did you swap any sensors over from the original motor or are you using the det's sensors?
i would pull the iacv off and clean it out. get a fsm and use it to check out your air regulator as well. its hard to see but how close is your maf to your turbo? have you used a wideban o2 sensor to see what afr you are running? there is also the possiblity of an air bubble getting stuck in the iacv area and messing with that so double check the coolant and make sure its air free. as for calums ecu with cold start that part of the ecu doesnt get changed. the ecu that you had calum work on was it the ecu that was in the car originaly? did you swap any sensors over from the original motor or are you using the det's sensors?
They (Jen and DC Scotty and crew) have changed the IACV, the AAC, and all other sensors from his working DE motor that he pulled from the NX. The NX ran perfectly (almost TOO good IMO) with that motor. It was VERY impressive for a DE with cams.
The MAF is on a decent length pre-turbo intake pipe, looks like it was a CAI at one point in time. Filter is attached to the other end of the MAF.
The ECU was the original ECU that was in the car prior to the swap. It was sent to Erick to have the daughterboard and chips installed. Erick tried raising the base idle in the chips and reinstalled them, and it didn't really affect the base idle, though the IACV does PSUEDO affect idle.
Jen doesn't have a wideband bung, so we couldn't install one this weekend. I told him to go to an exhaust shop and have a bung welded in, with a plug temporarily until he can install a wideband.
Coolant temps were fine, no signs of overheating (although he's running TMIC with no vent to it.)