View Single Post
      12-05-2018, 06:48 AM   #31
LOW4LYF
Brigadier General
LOW4LYF's Avatar
2163
Rep
4,107
Posts

Drives: E92 M3 & F85 X5M
Join Date: Jul 2016
Location: @Home

iTrader: (1)

Quote:
Originally Posted by Jeff4507 View Post
There is just one sensor upstream of the filters (mounted on the cat pipes). I am assuming that you can just plug something like a JB4 in to clear the CEL that will inevitably come on if you remove them that you'd be golden... But I don't want to have to buy the exhaust and JB4 to confirm/deny that!



They do indeed have different software (the late 18MY M4 has 1PSI more boost to compensate for the extra restriction in the exhaust). I very much doubt the sound is affected, you still get pops and cracks on the new M4 CP but everything is more muted (would imagine the filters are responsible for that).
Thanks for the Info and confirmation. I see already people flashing the OPF software on non OPF cars
Appreciate 0