[geno]

Back at it with the X3M

Trying to see what the limits of the stock fueling system are, specifically the LPFP. Car runs great except will ignition cut/misfire/who knows during a pull on the Stage 2 OTS MHD map.

I’ve flashed back to stock, flashed to OTS stg. 1, ran datalogs on both, and everything looks and runs fine. Haven’t swapped back and tried stage 2 on 91 (I have a hunch it might be gas quality) but I wanted to see if anyone has some insight on this.

My two primary suspects are the torque limiters and the lpfp. On a log of a stg. 2 pull I did ~690 torque and the limiter went on a tad so I have a feeling it could be banging that at 700 during WOT.

My only other suspect is the LPFP as, when it does finally throw a code, it is related to fuel pressure. Im not sure if the LPFP is a weak point, or if I have a bad one (I’d be surprised, 40k mile car), or if my car just doesn’t like the tune.

TL;DR Car is bone stock. Running MHD with the stock downpipes setting on 91/93 oct (91 works, 93 iffy), sometimes cuts during WOT on Stg 2., throws a code 20% of time.

[Jnat]

I'm running the MHD 95/E30 maps and not having this issue so not sure... The fuel system is handling E50-55 on custom tunes no problem from what i see.

[geno]

Any chance you can send logs? I want to compare and contrast lol

[Jnat]

Here ya go --- MHD E30

https://datazap.me/u/nat/log-1710688...43-44-45-49-55