The M1 is not a great intake while the TF intake is very, very good. But your car doesn't sound like the best place to test a TF intake which is why I'm not so sure you're going to see a big difference. If you test them back to back on the dyno you'll most likely see the TF intake pull away after 5000 rpm. A street car might never see any difference between those intake while a full on drag car with a 5000 stall convertor might see a decent improvement from the TF intake.
