did the throttlebody mod
Yep....you got the general idea. Cut the big stuff with the snips and then hand file it all the way down to the line to make them perfect. Another thing you could do....if you didnt feel comfortable replacing the butterflies is just widen the bores all the way up to the seal and still use the stock butterflies. Just an idea....
Hey man, I was just throwing out ideas....You get gains just from getting rid of the bottle neck on top of your throttle body. Using a die grinder to open up the TB bore is going to be a pain, b/c its all free hand and making both bores exactly the same is hard. If you got the time, go for it.
i wouldn't even try it...for the small gain your going to see from doing it, its not worth doing by hand and potentially screwing it up. take it to a machine shop and have them do it, they arent that expensive.








