My 2015 535i xdrive runs a stock turbo with upgraded inlet and diverter valve. Has downpipe, bigger intercooler, metal charge pipe, dorch stage 1 hpfp, stock airbox and exhaust, and canbus flex fuel. Car is running [email protected] at full weight plus a few extra lbs of tools on board. Hoping to go deeper in 11s soon. Wondering if anyone has any data on any intakes being better than stock.
