[Raptor]

I think he is referring directly to the divider, not porting in general. I have ported a ton of stuff for the HORT boys and as far as I know, they believe in porting. I think Johns point is that with the time required to remove that divider, if it doesn't make an improvement is probably not worth doing. I am sure that you are better off leaving it in place to direct exhaust flow and segregate the pulses any way so removing it is a futile labor at best.