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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N55 Turbo Engine / Drivetrain / Exhaust Modifications > Dorch Stage 1 vs Stage 2
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      11-30-2021, 11:26 AM   #23
ZM2
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Quote:
Originally Posted by AmuroRay View Post
ZM2
Yup, my Dorch stage 1 has worked fine on the BM3 Stg 2+ E30 OTS map with the stock and Dinan turbos and using a 50/50 93/E85 mix.

It’s only now with a TTE460 and when it’s <50F out that I’m noticing HPFP dip down to 1800psi on tip in, but it doesn’t cause any issues and the pump quickly catches up and supports my fueling requirements for what is probably 480whp on half E85.

If it’s warmer outside or if I drop to E35-E40 when it’s cold, no dip at all.
Appreciate 0
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