Nistune Forums

That is awesome! I returned the bottom of the fuel map to 0's and low load throttle response got much better. I also made the recommended adjustments to the TTPMax, load index no longer spikes. I swapped my new IACV back onto the car and dialed it in as per the FSM and idle and cruise AFR's are now ...

Sorry for the late reply, I will try all of that. Yeah, I did a couple very low RPM-high throttle scenarios to determine what my TTP max should be. I did realize that I had a tiny exhaust leak (wasn't audible) this weekend after replacing all exhaust gaskets with solid copper. I also replaced the IA...

I have a 97 240sx with a turbo KA24DE running with a 96 feature pack manual ECU. I turbo'd the car a year ago and had it tuned by Martin at RS Enthalpy. When he loaded his base tune on the car it started hunting for idle. He was pretty sure it had a vacuum leak. We used half a can of ether all over ...

I too am trying to adjust my tune for a VTA BOV. However, mine is on an S14 KA24DE using a 72F0F ecu. I am unable to find TTP Min in nistune. I see Max Load (TP) but not Min. Is it possible to adjust TTP Min on this ECU?

Since originally posting, I have tried a friends ECU which had the same part number and base image as my factory ECU and I tried an Automatic ECU with a 72F11 base image (All ECU's were '96). Both ECU's worked fine and the stumbling was gone when cold. This morning I removed the nistune board from m...

I have attached a log file of the engine stumbling. It looks as though the injector time jumps and the timing swings. Only happens when cold.

Edit: I have attached another log where it happens repeatedly. Injector time gets as high as 7ms, timing fluctuates from 27BTDC to 12BTDC at idle.

I have a 1997 Nissan 240sx SE that was auto to manual swapped using a manual 1996 ECU. The ECU harness was repinned to use the 96 ECU. The base image on the factory ECU was 72F02 and my type 4 dual rom board has 72F01 on it. Everything works fine except it seems while the ECU is running in closed lo...