N55 HPFP upgrade for motors before 2012?

Xramses · 03-23-2024, 06:27 AM

anyone ever experienced a HPFP upgrade to the new generation with an "old" N55 before 2012?

Tallicia · 03-23-2024, 04:22 PM

I'm curious about this too, I have heard the ECU signal is different, though I wonder if an ECU flash would be adequate to handle the signal variation/mapping, or if the new 2012+ N55 had other ECU changes. I doubt it since all the other PWG and sensor and controllers are the same as far as I can tell.

I have both the newer tappet and the old rotary style HPFPs in 2 different BMWs with N55s, fwiw, as I compare them during various upgrades and maintenance.

03-23-2024, 06:27 AM	#1
Xramses New Member 0 Rep 5 Posts Drives: BMW x6 E71 N55 Join Date: Dec 2023 Location: Berlin Germany iTrader: (0)	N55 HPFP upgrade for motors before 2012? anyone ever experienced a HPFP upgrade to the new generation with an "old" N55 before 2012?
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03-23-2024, 04:22 PM	#2
Tallicia Private First Class 74 Rep 141 Posts Drives: X6 and 1 series Join Date: Jun 2016 Location: DFW, TX iTrader: (2) Garage List 2013 X6 [0.00] 2011 BMW 135i M Spo ... [0.00]	I'm curious about this too, I have heard the ECU signal is different, though I wonder if an ECU flash would be adequate to handle the signal variation/mapping, or if the new 2012+ N55 had other ECU changes. I doubt it since all the other PWG and sensor and controllers are the same as far as I can tell. I have both the newer tappet and the old rotary style HPFPs in 2 different BMWs with N55s, fwiw, as I compare them during various upgrades and maintenance. __________________
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