Forced Induction motors that have died

jax4557

I appreciate the input and I dont know what happened and you could be spot on but I will point a few things out you are wrong on so it can help use all possibly come to a better conclusion on these failures across the board.

I am running ecutek and do have AFR protection and overboost injector cut enabled and configured by seb ( one of the best in the business ).

I also have knock warning turned on and saw it a few times when getting into the throttle in 4 gear a little to soon in the rpm range ( Learning the car )

I am running a Aeromotive 340 pump with 1150cc injectors and a cjm se-1e fuel return system incorporating a flew fuel setup so I believe my fuel is fine.

Lastly the AFR you are seeing are with E85 and are going to be different than you typical 93 octane tune as well as I had a leak in the initial stages and my wideband was off a bit during off throttle after a pull

I am pinning my failure up to a casting defect or existing issue with the cylinder 1 ringland area and of course pushing the limits to 14 PSI for 4 months probably didn't help it. I have seen a few people pushing the BP kit to this level with no issue so I think it was a one off issue in my case. My replacement motor also is seeing closer STFT numbers on bank to bank so I think that tells me the rings were already leaking oil into the cylinder day one of tuning.