BMW B58 Stage 1 Upgrade
- Custom Billet Compressor wheel
- CNC Machined
- High Speed VSR Balanced
On stock car other than an air filter and 93 octane we gained over 30whp and 20ft/lbs with no tune.
On same stock car with only an air filter, JB4, and 93 octane / meth we made 481.18whp and 437.84 ft/lbs