Power and torque and math, oh my!

Lurking around on vwvortex occasionally I would see some discussion about a particular mod and its associated power gain. As proof of said improvement often a dyno sheet would be posted. Beyond acknowledging its existence, however, I didn't take much notice of the dyno itself. From my personal newbie point of view I was more concerned with enhancing the R's fun factor rather than absolute numbers.

Recently, a couple people have asked me about my R32 and I was chagrined to realize that I had no idea what gains my performance mods had given me. I remembered that the flapper mod was reported to give + 5 hp, but that was it. I still place more importance on the fun factor rather than numbers, but it's still information I decided I should know.

Anywhoo, I found some dyno sheets EIP had posted on their website and elsewhere comparing their ECU upgrade and cold air intake to stock, which I've uploaded (EIP Stage I ECU upgrade dynos; EIP cold air intake dynos), and for the first time I took a closer look at them.

To make a long story short, with both the chip and intake, EIP says an R should have gains of around 14-15 wheel hp and 21 torque at the wheels. All very well and good, except this led me to another question: given that the VW specs on the R32 are in bhp, how do I convert the numbers?

Converting whp to bhp was simple enough--assuming a 15% drivetrain loss, my R32 should be getting around 267-276 bhp @ 6200-6400 rpm, compared to stock, which is 240 bhp (or more likely, 247 bhp) @ 6250 rpm.

Torque = [bhp*5252]/rpm

So, given this dyno and remembering to convert to bhp, then it's 270 ft-lbs torque @ 2800-3200 rpm, compared to the stock value of 236 ft-lbs @ 2800-3200 rpm.

To sum:

Stock: 247 bhp @ 6250 rpm; 236 ft-lbs @ 2800-3200 rpm.
R32Argent: 267-276 bhp @ 6200-6400 rpm; 270 ft-lbs @ 2800-3200 rpm.

Oh my!