I feel silly even saying this but some people aren't aware of what the difference between hp and rwhp is..
hp is rated at the crank
rwhp is rated at the rear wheels (aka on a wheel driven dyno)
Most say that a manual car loses about 10%-15% of its hp through the driveline. So a car like a Z4M which makes roughly 330hp at the crank or so would make around 290rwhp.. Most s/c kit companies (ess/etc) rate their kits at the crank. So I believe the VT-500 is rated for 500 at the crank, and likely makes about 425-450rwhp.
Our goal would be (on E85, not pump) to make about 650rwhp with this setup, so roughly 750hp+ to the crank.
The S54 on stock internals is good to high 700rwhp.. not a good idea.. and likely not to last to long, but its been done. 600-650rwhp on the stock internals has been proven to be very reliable, hence that being our goal.
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