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One more thing...
IF we determine the car ...lets say the MR 2 or the RX-7...isn't capable of hitting the process estimates in it's current class, then merely movig it down a class and rejigging the numbers based on the same estimates will be a complete waste of time and money.
Because, if, say the RX-7 is getting creamed in ITA because it has 101 ft lbs of tq, and 128 at the wheels and the process has it at 130 at the wheels but has no "subtractoer" for it's huge lack of torque, (cars of equal weight have roughly 25% more tq) then it will remain uncompetitive in any class it goes to, as the weights will be adjusted in excess of it's real capabilities.
I use the RX-7 as it has a much better base of knowledge..there are a multitude of pro builders that have made the dyno runs needed to really know what the car can do, and there are an equal number of pro builders and suspension engineers, (professionals) who have built cars themselves.
In the case of the RX-7, moving it down and using the same process is just a sideways move.
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I disagree. A fully built, well driven 2280LB ITA RX7 may be a really good car. Maybe even competitive at some tracks. this would mean that the process worked for the car in ITA. Hpwever the argument that many of us are making is that the weight generated by the process is not realistic. As result we cannot prove the process to be correct.