It is cool that Metaljim took the time to make those runs but in simple truth it means nothing. Do to the fact that the weather can change an e.t. for the most consistant of cars. I worked at a speed shop for 2years in H.S. and dynoing some thing in is VERY time consuming. Water, oil,and air temp along w/ berometric presser and humidity are huge factors. When it is 95 out and track temp is 125 my civic runs 19.2 w/ night falls temps go down I throw on a bag of ice 17.8s start popping up. This is deff. a test for a dyno!

There is also the fact that most guys run c.a.i. and as you speed up you get a ram air effect which in hand moves more air into the engine. all these relative flow ratings don't mean anything without testing. But to say it is not usefull to go 60mm is a little off. If I had a stock motor w/ NO mods then yes a 60mm is pointless. But with an air intake, header, and cat back you move more air and are able to move even more air. So adding a 60mm t.b. will give you more air to move.

So if after you read this thread and want to trash your 60mm and kick the dirt in anger you can just send them my way

TeamLSR member @ landspeedracing.com