[Unichip Jack]

Good eye… however, it’s neither an error nor something unusual with the Unichip. The equation relating bhp to torque has a constant of 5252 in the numerator and rpm in the denominator so torque is always greater than bhp below 5252 rpm, they are the same at 5252 rpm, and bhp is greater above 5252 rpm… if they’re plotted on the same scale.

Like most dyno graphs, we plot rpm on the horizontal axis and bhp on the left vertical axis, but we have a different scale for torque on the right vertical axis. On this chart, the bhp scale is from 20–220 but the torque scale is from 100–180 lb-ft.

It’s just so happens the selected scales cause the stock bhp and torque curves to cross near 5252 rpm… looking carefully, you’ll also see the stock bhp and torque lines cross each other three times… that can’t happen in reality and is also because of the different scales.

If anybody wants a more detailed explanation of the relationship between bhp and torque, check out http://www.unichip.us/263-faq-torque-and-bhp

Cheers