[Rondavouz]

So my M2 has now managed to turn off during driving on the highway x2
I’m running E50 with tte550 turbo and so on Pushing 525whp.
Both times:
Warm day
Low on gas
Been driving for 45-60 minutes
No codes, just shuts off and will only start after cooling down for a long while.
My thought goes to a ekpm overheating problem or lpfp problem. Lpfp is stock. Hpfp is Dorch. Problem seems to have to do with heat.
Any one else having similar issues or any ideas? About to put a fan on the original ekpm.

[cecaa850]

Low pressure pump is probably overheating and shutting down. I'm sure it's maxed out. It uses the fuel in the tank to keep itself cool so when you combine less fuel to cool it and the demand for higher fuel from it you've created the perfect storm for it to overheat. If you keep the tank at a half or more and it never shuts off you know it's not the ekpm.

[Bowenpuref3p]

Are you running a dorch stg1 or stg2 hpfp? I'm trying to figure out if I can run a stg1 pump on my ps2 powered n55 and run a e30-e50 mix with it around the 500whp mark. I think the stg1 would be just enough so I'm trying to see what others have gotten out of it on a ethanol mix.

[ZM2]

Originally Posted by Bowenpuref3p

Are you running a dorch stg1 or stg2 hpfp? I'm trying to figure out if I can run a stg1 pump on my ps2 powered n55 and run a e30-e50 mix with it around the 500whp mark. I think the stg1 would be just enough so I'm trying to see what others have gotten out of it on a ethanol mix.

I don’t think Stg 1 will be enough for that mix and whp. I’m ~430whp and my Dorch Stg 1 will start to dip if I take the Emix >55%.

You’ll need stage 2 for 500whp & E30-50.

[ZM2]

Originally Posted by Rondavouz

So my M2 has now managed to turn off during driving on the highway x2
I’m running E50 with tte550 turbo and so on Pushing 525whp.
Both times:
Warm day
Low on gas
Been driving for 45-60 minutes
No codes, just shuts off and will only start after cooling down for a long while.
My thought goes to a ekpm overheating problem or lpfp problem. Lpfp is stock. Hpfp is Dorch. Problem seems to have to do with heat.
Any one else having similar issues or any ideas? About to put a fan on the original ekpm.

Were you able to get this sorted out?

[Bowenpuref3p]

Originally Posted by ZM2

I don’t think Stg 1 will be enough for that mix and whp. I’m ~430whp and my Dorch Stg 1 will start to dip if I take the Emix >55%.

You’ll need stage 2 for 500whp & E30-50.

I actually just found another post from you on another hpfp thread that answered my question the same way you just did here. I really appreciate it as you confirmed what I had suspected about needed a stg2 hpfp. I'm just waiting to see if dorch or spool have a black friday sale. If I go dorch I definitely need stg2 like you said but I'm pretty sure I'd be fine with spools fx150 so if dorch is on sale I'll go that route. I'm running mhd so it's nice to have dorch as a option in the tune flash unlike spool. I did start a thread a few days ago and was told by someone with experience that they used mhd and checked the dorch hpfp box and it worked with spools pump so that is an option.

[Rondavouz]

Been chasing this problem.
It seems my problem was due to coding of the DME.
Yes, something messed up something in the DME.
Dunno if it was BM3, Thor or me. The car didn’t throw any codes but stopped when warm and unable to start but cranked.
Solution was to update the car and recode the units in it. Also gave me the perfect time to get service done.
So if strange problems arise, I would really recommend a reprograming.
Put oem hpfp, plugs and reprogrammed the car. I have my own ICOM that worked like as charm. Oh and had to empty out 40liters of E50 using a hand crank, fun 3 hours!