JB4+MHD. For a stock turbo N55 car, it was a monster and a ton of fun. You get all the flash options of MHD and you can fiddle with your JB4 to adjust for throttle response, boost by gear, custom boost MAP, add methanol later.
All of the BMS BEF are free and open source so if you decide you want to tweak the flash you can.
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2008 MB 335i-SOLD
2011 AW 335i M Sport- SOLD
2011 BSP 335i-SOLD
2011 BSP 335is- FOR SALE
2018 YMB M3- Current
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