You can't put the air filter between the sir and maf, the rule states all air must enter through the sir. If you put the air filter between the sir and maf you would be drawing in air that would not be going through the sir, making it illegal. ...[/b]
Um ... huh?

That doesn't have anything to do with anything. All of the air goes through the SIR, then all of the air goes through the filter, then all of the air goes into the engine. You street car filters all of the air that the engine breathes, right? I'll bet that the air goes through some kind of snorkle or intake hole before it gets to the filter, and that the intake tract is essentially sealed between that hole and, well, the end of the exhaust pipe for all practical purposes. Think SIR instead of snorkle hole and you're there.

That, and a couple decades of SIR-controlled Formula 3 cars - all of which do exactly what you claim isn't possible - MIGHT be some evidence that it is.

I don't have the faintest idea what you are talking about.

K