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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > N55 PURE Stage 2 Turbo Upgrade



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      10-03-2017, 12:40 PM   #705
DrRobert
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How about fuel upgrade to handle E30. Do you think a stock system will hold it or will I need to go with at least a Stage 2 LPFP for E30?
E25 is the most I am able to run with PS2 and stock fueling system. Have not dyno'd yet with this fuel blend but the car runs way better and is a lot faster than it is on E10 pump gas. But we only have crap 91 octane here in CA, so YMMV.
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      10-03-2017, 02:45 PM   #706
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How about fuel upgrade to handle E30. Do you think a stock system will hold it or will I need to go with at least a Stage 2 LPFP for E30?
I am running 11 - 15 degrees of timing on 17 psi with just E30. You should have the newer HPFP though so that would be your limit. I have been waiting to hear more about the limits of the newer style HPFP since MHD just opened up for late E series.
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      10-04-2017, 12:44 PM   #707
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I see you have the pure stage 1 running it with E30, do you run out of fuel and do have some dyno number with that set up?
I haven't dyno'd with this setup, but I should be around 360awhp. Once I get over E35 I start to have issues.
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