Power mods for the I-5

[ChevyHighPerformance]

Originally Posted by PARAGON

Damn, you are just getting dumber and dumb.

"The coefficient for friction doesn't increase as the HP increases so one could naturally assume a 80HP difference. 153 + 80 = 233 or a net gain of about 13 BHP or somewhere around a 6% gain."

Here you used a absolute drivetrain loss - 80 hp.

"Just as it's not a fixed HP loss"

Here you technically contradicted yourself.

The chassis dyno showed a gain of about 17-18 hp. Based on your logic the BHP only increased by 13 hp. What you have effective stated is that the drivetrain loss decreased with increased power throughput. You now you have said all three possibilities regarding drivetrain loss:

1) The loss is fixed
2) The loss increases with hp thoughput
3) The loss decreases with hp throughput

This is the failed logic that I don't understand.

Even though the drivetrain has constant, linear, and non-linear loss parts for these hp changes its fair and reasonable to linearize the loss as an efficiency. If the chassis dyno hp tripled then using a linear % drivetrain loss may not be reasonable.