hpfp n55 upgrade

10-16-2023, 03:58 PM	#1
pavelcyrner Registered 0 Rep 1 Posts Drives: BMW m135i Join Date: Oct 2023 Location: Prague iTrader: (0)	hpfp n55 upgrade Hello, looking for an advice regarding hfpf upgrade. My M135i n55 is FBO with TTE550 hybrid turbo. I use the MHD software and I am considering upgrading also the hpfp. My question is, as there is no ethanol around and I will use only regular fuel (ron 98), will upgraded hpfp like Dorch bring more power on regular fuel with hybrid turbo? If yes, is stage 1 pump sufficient and how many more hp can I expect? I went through many forums bur nowhere I could find a clear answer as most of the people use ethanol with these upgrades... thanks Pavel
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