Quote:
Originally Posted by truegret
I’m look for recommendations on the best catless downpipe for a 2018 340i B58M. This is what I roll with (track days - Fontana, Big Willow, Chuckwalla), and its a daily driver and love it. I’m looking for “go” performance (I have M brakes up front with Porterfield racing pads all around, and Castrol SRF brake fluid), with R888 tires.
2018 340i B58M
JB4 tuner (love it)
100 octane
I typically run map 2. I’ve run map 5, but it goes to stupid mode when exiting a medium speed (60-80mph) turns.
Two questions:
Any recommendations for the best catless downpipe so that I can run map 5 (and whoop on my Porsche GT3 buddies -  )?
I se 4” (VM) and 4.5” (VRSF) offerings ... what does my ‘18 340i require?
Thanks in advance! |
i have Evolution Racewerks. Best downpipe you can get for the B58