How about using a single dyno and running the same car with and without restrictor within minutes of one another? I'd love to oversee one of those tests.

Hey, I'll cover the costs if anyone wants to bring their BMW to the Dynojet in Raleigh NC. Haywood's Custom Speed shop, used it a number of times for various street cars as well as IT cars. $100 an hour, no limit to pulls for the hour. I'll pay, you bring the car well-prepped BMW 325, you bring the SIR. Think there are more than a few top running candidates in the area. I'll be there, Jeff Young will be there, and any other local IT'er that wants to check it out. Be an interesting test conducted by a non-involved indivdual(s).

R