may I ask a questions ?
Lets say you don't have access to E-fuel but want to open up the potential of your N55 M2, most easily available/reliable setup I guess would be a pure stage 2 and all required mods.
Ive been down the road of upgraded turbos combined with wmi (jb4 + mhd backend) on my past 135i but I'd rather avoid WMI from now on.
Questions: What is the horsepower threshold to need an upgraded High Flow pump ? What power can be expected from a pure 2 running 91-93 with stock pump ? Where will an upgraded High flow pump take us ?
What setup will run de coolest for track use ? WMI or E fuel ? If I ever go down the rabbit hole with the M2 I'd rather it to be the simplest one.
Thanks