Dave, I'll concede that.
My main issue with this is that it is not technically correct, and following from that, it is used as a crutch that will prevent a tuner from understanding the intricacy, brilliance, and selling points of TP all while preventing them from learning how to tune with it instead of against it. One will always be stuck in a speed-density or simplified speed-density frame of mind when tuning with TP, which for me seems like a recipe for mediocre tunes at best and unsafe tunes at worst.
There is no reason to know or care what pressure you idle with, or where 100 kPa is, or where your max boost pressure is when working with TP. There is no reason to care about pressures at all, ever. Trying to put pressure into the mix is a sign to me that someone hasn't grasped what TP is all about. If one is to tune with mass air, I'd say it would behoove them to understand it intrinsically and quickly ditch any attempt at relating it to speed density. If I were teaching someone how to tune with mass air, I would never mention pressures, whether they were a novice or already familiar with speed density. I believe it would only confuse the matter, and send them down the wrong path.
Last edited by BenFenner
on 2013-03-01
at 15-29-36.