BMW M4 Remap, crank hub and more!

We had this lovely BMW M4 F80 in the Whifbitz workshop last week for some mods and maintainence:

  • Insane Performance pinned crank hub, this fixes the inherent issue with the BMW S55 engine where the crank hub can slip and cause engine damage
  • K/N drop in air filters
  • Whifbitz 3.5″ single midpipe
  • NGK 97506 spark plugs
  • It also had a Stage 1 remap using MHD Tuning off the shelf map, power went from the standard 420bhp to 524bhp
  • MHD GTS gearbox remap
  • Whifbitz titanium chargepipe set
  • Engine oil and filter change
  • CanChecked display
  • New BMW valvetronic motor and eccentric shaft, it had the dreaded woodpecker type noise which indicates a failed motor and this one had damage to the gear on the shaft too

Dyno graph below is the power at the rear wheels which equates to 524bhp at the flywheel

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