Went to the dyno today....

The numbers are low because he's using an alphabet cam instead of a TFS1 and 40 series flows with an o/r H. Seriously, I agree that something's off. It should make closer to the rating on the spray, and nitrous usually makes huge torque too which you're not really seeing. Is this your old motor Adam?? Can't wait to see the 408 on the rollers.

NikwoaC said:

Correct me if I'm wrong but wouldn't HP increase be the same at the flywheel as it would be at the wheels? If you gain 100 hp at the flywheel, its still going to be 100 gain at the wheels, you just loose that ~30 through the drivetrain, thats what is constant.

Ex: N/A 300 FWHP, 270 RWHP ; nitrous 400 FWHP, 370 RWHP. Both numbers see a 100 HP gain, both RWHP see a 30 HP drop from drivetrain losses (assuming peak numbers occur at the same RPM).

Click to expand...

No, if a kit is rated at the wheels it calculates the % you lose in the drivetrain to get that shot to the wheels.

Ex: 150 shot Nx rated at the wheels would make about 175 to the flywheel to get the 150 to the wheels with about a 15% loss. As other companies like zex rate theres at the flywheel so the 150 shot would make about 127 wheel hp with about a 15% loss.

Also N/A 300 flywheel, 255 rwhp ; nitrous 400 flywheel, 340 rwhp with a higher flywheel number you lose more power as the power lost is a percent not a set number.