Originally Posted by Savington

Sure we do. I've seen PhD candidates, senior-level engineers at Mazda, racing engineers, national champions, shock engineers, and all sorts of other industry professionals quietly add their $0.02 in various places on this forum.

You should never assume that all opinions are equal, ever. Some people know more about certain topics than other people, and their opinions should be weighted as such.

Originally Posted by matrussell122

Can we have a mod clean up this poor guys build thread it's going to be a cool build when its done and the thread is way derailed. People can still debate throttle body size in a new thread if need be.

Originally Posted by Savington

I tuned a Rotrex car last year which, unbeknownst to me, was only opening the 70mm aftermarket B-series throttle to around 80% TPS. We were hunting for a restriction, since the car was down on power from what we had been expecting, and we assumed that we had found it. Nope. Owner manually actuated the TB to hold it fully open for a pull, and we saw zero gains at ~270whp.

There are physical reasons why large throttle bodies simply cannot be made to have the same driveability as small throttle bodies, 521ci water-jacketed funny car engines with 105mm throttle bodies aside.