Originally Posted by
Franc Rauscher
That is why you must set a base line and then use the same dyno and tuner to have an accurate picture of the change made to the engine. Even if the baseline is incorrect, the change is correctly measurable. So a 25% WHP improvement off the same dyno can be applied to what ever Engine spec the manufacturer published. Assuming, of course, IT is accurate you can reasonbly predict your new Crank HP...
Sure if it's a back to back pull without removing your car from it's position on the rollers.
The guys on the R6 forum put the bike on, strap it down, run it. Leave it in place without messing with any software or anything, put the mod on, and run it again. A few of them have said if you run it, get off of the rollers, turn right back around on to the rollers, strap it, your numbers will be different.
There's too many variables. I just want to put mine on to get that rough number and go back when I finish the car for another rough number.