Quote:
Originally Posted by KingLT1
My Whipple(build date 1/18) came with a 3.5 pulley and it's a Gen 3 rotor pack. The kits can be ordered with different pulleys.
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Is that the kit that comes with the Whipple supplied tune? I was at 8psi boost with the 3.625" pulley and went to 9psi boost with the 3.50" pulley. With 3.50 pulley I would expect the tune will have less timing advance to compensate for the extra boost.