NJ-GT

GTGTGT:

Congratulations.

The 996 has a proven 16% drivetrain loss. From the 1999 C2 running 250~ rwhp to the 3.6 C4S runnning 272~ rwhp.

350rwhp is something around 408Hp.

GTGTGT

That is great news! I have a question about what companies like Europipe, Powerchip, Cargraphic, Fabspeed, etc. post. They always show a benchmark and starting point of 380 crank hp and then show a gain from that point. If these motors are really producing more hp - could these companies be using the conservative Porsche numbers to assist themsleves in showing improvements?

Has anyone dynoed and then re-dynoed their cars to see a true difference?

Rockitman - have you re-dynoed?

plima

Fyi, if you know RPM and Power you can calculate Torque, or, obviously, if you know RPM and Torque, you can calculate power. Relationship and conversion constants are as follows:

(Torque in Newton-Meters)*RPM/9840 = Power in KW

1 Newton-Meter = 0.7376 lb-ft

1 HP = 745.7 Watts = 0.7457 KW

It is interesting to calculate the torque from your HP graphs (a little EXCEL spreadsheet work will do it...)

Holger B

FWIW...350rwHP with a 16% drivetrain loss equals 417HP by my calculation

Z06

The way you look at converting rwhp to flywheel, is to consider that 350rwhp is 84% of a number.

350rwhp /.84% = 416.66 HP You can go back wards to check 416.66 x .84

buckdr1

Some impressive numbers, I just came back from a seat of pants drive. They go like Stink, wonderfull HP, push you into the seat, nastey craft
Oh did I say I good time too?
Cheers
Bill

Philip in AL

I have done the before and after.
Before: 328 HP and 265 TQ
After: 362.5 HP and 289.9 TQ
Air Filter and ECU