Quote:
Originally Posted by Kyle2k
So if we already have a vmax, would it be worth while sending it to him for the shaft mod? Is porting equivalent to the two except he additionally does the shaft mod?
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Bo's aren't spiral cut but they are very nicely ported. Whether they're equivalent depends on if you believe the spiral cutting actually does anything. IMO, there's absolutely no doubt that increasing the opening has to give gains. The question is how much. Seeing that both TB's dramatically change the way the car drives, it's hard to tell just how much of a gain you have and I don't believe in butt dyno's. lol