Originally Posted by 01Lowboy
Talk about being way off-base
Potty Pants, stfu.
OP, its all in who you have do the work. I've been quoted anywhere from $50-$300. Deleting your primaries will not allow you to pass emissions if your state or county requires them. Personally, I would get Gavin's headers and keep the stock ones handy for when you need to do the sniffer test.
E92 '08 335Xi 6AT - JB4+MHD, ar design DP's, Race Cats in the mids, Corsa Axleback, VRSF CP w/Tial BOV, VRSF 7" FMIC, BMS DCI, BMS Cowl, H&R Coilovers, Renn Motorsport RS-51's, Alpina TCU Flash, Retrofit Earl's Oil Cooler, Turner Boost Gauge, Fully Coded.
Upcoming: DOCRace Single Turbo
Best 1/4mi: 13.201 @ 106.93 / 2.0 60' / DA=9300ft Bandimere Speedway