Description
DETAILS
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
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