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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Fuel Requirement for maxing out stock turbos with inlets on E60



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      02-10-2016, 05:39 PM   #1
illrider
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Fuel Requirement for maxing out stock turbos with inlets on E60

I'm currently FBO with stock inlets and running E60 with 90/10 meth. I have Fuel-It stage one LPFP upgrade, which has been holding up fine at my current power level. My clutch is starting to slip at this power level, so I am planning on upgrading to a spec 3+ with single mass flywheel so I have enough in case I go upgraded turbos down the line. I figured since I am going to be paying for a clutch install, inlet install shouldn't add too much. My question is, after inlet install and I crank up the boost (after TMAP sensor upgrade of course), is my current fueling going to be enough at E60 to max out the stock turbos with inlets? Will I have to upgrade to port injection or upgrade my LPFP to stage 2/3 to keep up?
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      02-10-2016, 07:49 PM   #2
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Stock turbos and a kicker pump should be fine for your low pressure fueling requirement... I think what you will run Into issued with is the HPFP bit with Methanol you may be able to get away with it. Just log log log and make sure once your turned up to where you want to be the HPFP isn't tanking.

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      02-10-2016, 07:51 PM   #3
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probably at a minimum stage 2 with tbi but stage 3 with pi will give you headroom.
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      02-11-2016, 08:50 PM   #4
jtswole
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My fueling is maxed out on e60 at 28psi with inlets
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      02-11-2016, 09:45 PM   #5
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I was running out of fuel at 25psi
I'm fbo w/ inlets.
Stage 2 lpfp.

Hpfp was dying at 25psi.

But TBI or PI in the future will take care of that.

For now, I got a new hpfp from the recall. Been running a OTS pump map until the weather gets warmer. Then gonna go all out
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