THESE PARTS ARE LEGAL FOR USE ONLY IN COMPETITION RACING VEHICLES AS DEFINED UNDER CALIFORNIA LAW, AND ARE NOT LEGAL FOR USE IN ANY OTHER MOTOR VEHICLE. ***BMW N63 STG1 Pure Upgrade Turbos***-The only true turbo upgrade set available for these cars.-Custom Billet Compressor wheel-Heavy Duty Large Pad Upgrade Thrust-CNC Machined-High Speed VSR Balanced DYNO RESULTS:-PURE STG1 Turbo Upgrade-640whp 680wtq!-2011 550i-BMS JB4 -91 oct + meth DYNO RESULTS:– PURE STG1 Turbo Upgrade– Flash Tune– FBOMode:655whp & 582wtq on Race Gas + Meth kit583whp & 561wtq on pump gas + Meth kit376whp & 383wtq on stock turbosKEEP IN MIND THIS IS A Mustang dyno you’re looking at over 700whp dynojet DYNO RESULTS:-PURE STG1 Turbo Upgrade-614AWHP!-550xi-BMS JB4