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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > B58 Turbo Engine / Drivetrain / Exhaust Modifications > Official B58 HPFP Options
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      Yesterday, 08:16 AM   #485
kern417
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Quote:
Originally Posted by 540iSUP View Post
So now that BM3 and MHD are coming out with Flex Fuel maps, would you suggest a Dorch Stage 2? I'm running stock turbo right now, but will upgrade to a hybrid sometime in the future. I plan on running some E-mix, but because its a Daily Driver/long distance Family car, I'm really looking into the Flex Fuel option. I don't race, its a 540i so its heavy, but I do have a heavy foot and like to go fast in the back roads.

So for running a Flex Fuel tune, what HPFP would you suggest. I was leaning towards Dorch Stage 2 so that I wouldn't have to worry about it at all, but if I can save some money and get away with a Stage 1 or even the TU pump, I would rather do that.
Flexfuel doesn't matter. Just like a turbo, the fuel pump limits how much power you can make. So pick whichever pump supports your peak hp goals.

500-600hp = TU/DS1
600hp+ = DS2
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As long as 3-pedals are an option, I will exercise my right to suffer the handicap and indignity of slower shifts and reaction times.
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      Yesterday, 10:33 AM   #486
540iSUP
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Quote:
Originally Posted by kern417 View Post
Quote:
Originally Posted by 540iSUP View Post
So now that BM3 and MHD are coming out with Flex Fuel maps, would you suggest a Dorch Stage 2? I'm running stock turbo right now, but will upgrade to a hybrid sometime in the future. I plan on running some E-mix, but because its a Daily Driver/long distance Family car, I'm really looking into the Flex Fuel option. I don't race, its a 540i so its heavy, but I do have a heavy foot and like to go fast in the back roads.

So for running a Flex Fuel tune, what HPFP would you suggest. I was leaning towards Dorch Stage 2 so that I wouldn't have to worry about it at all, but if I can save some money and get away with a Stage 1 or even the TU pump, I would rather do that.
Flexfuel doesn't matter. Just like a turbo, the fuel pump limits how much power you can make. So pick whichever pump supports your peak hp goals.

500-600hp = TU/DS1
600hp+ = DS2
Thanks Kern! Man, you've helped me learn so much about this platform through your posts and YouTube. I truly appreciate everything you're doing for the community.
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