February 1, 200521 yr Had a freind who owns a machine shop do it and it made a huge difference in the high end, revs out so much better now. and costed only 40 bucks. so happy with it
February 1, 200521 yr If you bore out the throttlebody, dont you need to replace the butterfly valve to take up the extra space? -Brian
February 1, 200521 yr Author I only did it to the butterfly valve, when I get the money I am going to have him do the rest and fabricate a new butterfly valve he'll do that for 120 bucks I am going to do this later. but just doing it up to the butterfly valve made such a difference to top end, and it added a bit of low end so all and all very worth the money
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