Wanted to post results from JB4 testing over the weekend on forum member tightie's M3 with some pretty impressive results. While here, we also removed the charcoal liners and installed a set of K&N Filters.
This is only the beginning, we're about to see some exciting stuff in the upcoming weeks.
Vehicle: 2015 BMW M3
Modifications: Gintani DownPipes (catless), K&N Filters, JB4
Fuel: 91/E20
STD
SAE
Conditions
And yes, that is a M1 in the background
