So I just finished my build and I only need the speed density conversion + map left. I got my spoolinup harness and all the speed density parts and I received my SD map from TSComp. I can't seem to get my car starting at all. This is exactly what I did (this is a JDM Evo 8 MR btw) :

1- Installed the IAT via the SpoolinUP harness to the MAF harness.

2- Made an extension from the MAF harness to the MAP sensor.

3- I wrote the SD map to the ECU and cranked the engine, but it wouldn't start, and if it did start, it would only last for one second.

4- I wrote the old map instead of the one TSComp sent me, placed the MAF sensor and connected it to the MAF harness. The car would start and idle (the idle would be choppy but it would still idle).

5- Took off the MAF sensor and placed the MAP + IAT combination instead (as if it was a SD conversion), kept the old map and cranked the car. It would start and idle just like how it would with the MAF sensor.

6- I rewrote the SD map to the ECU and gave it a shot, but the results would remain the same as the first try.


I have no idea what is wrong with the car as it seems to idle with the MAF setup and not the SD setup. I am 100% sure that TSComps map will start the car and idle it, I just don't know what's preventing it.

The local tuner here told me that there needs to be some wire reconfiguration done to the ECU so it accepts the SD conversion. TSComp hasn't informed me about any rewiring of the ECU so I'm quite sure that's not what's wrong.


Please someone help me with this dilemma.

 

Why did you make an extension from the MAF to the MAP sensor? You don't need this.

No wire configuration needed.

I would talk to your tuner before posting on here?

 

I spoke with my tuner he said that the problem was from my side. He gave me a few possible issues but they werent the problem.

As for the MAP sensor extension from the MAF harness, this is because I'm using a Skunk2 IM and the MAP sensor needs to be connected to give a reading, correct?