Nice numbers, but how does one make 520HP running only 4.5 psi? The 997 Turbo "only" makes 480chp and I'm sure it's running considerably more boost. 200cc in engine displacement is not going to account for that much power.
We're talking 48% more power from 4.5 psi and some bolt on mods?
I'm not doubting your numbers, just want to know how you got them.

 

it's possbile for sure. they're obviously crank HP numbers. my 3.6 liter 996 makes 500 crank HP with approx. 5psi. i've dyno'd it numerous times. i'm using the EVO SC kit and Suncoast Porsche (aka EVO) headers with cargraphic export mufflers.

considering his car has around 60 more HP to start with (it is the "S" right?), that's totally plausible.

you can't really compare the 997TT and the 997S S/C. two totally different animals, not to mention motors you have to remember that the compression is not lowered on the 997S motor, so it's easier to get to those HP numbers with less boost. another point to consider is that even though the peak HP numbers are higher on the SC car, the torque curve is much much weaker. the TT's will bring on a lot more torque a lot sooner.

can i have a rep point for this?