Dan setup my M88/3 powered E28 M5 with a Miller MAF and SMT6 and Mallory 6a. He later added the WAR chip when it became available. The MAF is wired directly into the SMT6 with its own harness. The stock harness is still there, unused. The coil is wired to the Mallory 6a. The Mallory 6a is being triggered by the SMT6. The stock coil sires are there there, unused.
For many years the car ran like a beast! However lately I have been having issues where the motor will idle poorly, but will die when throttle is opened. It acts as if there is no air flow signal being sent to computer.
When it does this, it usually does it when cold. Once the engine is warmed up, it will work fine all day. It was off and on for about two weeks like this.
However, starting Saturday morning, it will not run at all. It starts and idles, but it dies once throttle is opened.
I've checked all connections. Mallory 6a is flashing 3 lights on startup.
Do I have a faulty MAF sensor? Is the SMT6 failing?
Since I have the WAR chip, can I remove the SMT6 and Mallory 6a and just run the WAR chip? I really like the ability to tune while the engine is running, but I think I would give that up to have a simpler and more reliable system.
Please advise on how I can troubleshoot. Thanks!!
Scottie Sharpe
San Jose CA