Hi guys,
Just want to share with you a project that we have done here in Portugal with a Z4 20i (184hp).
We choose a Eisenmann Sport Exhaust System + K&N Air Filter and do a first test where we reached 209hp/333nm (we were expecting to get about 15hp/20hp from the exhaust/filter and it seems that the engine should have originally around 190hp)
After that we have done a remap and the final numbers are these (using 98 octanes) - 292hp / 449nm
You can see more photos here:
MPSCustoms