Hello Northernmac,I ride a 07 TBA and just drilled the airbox.I'm running short TORs,all snorkels removed, K&N filter.I had 130 mains & 40 pilots & stock needles/no shims.It ran great before drilling the box, but was a little lean on start-up and part throttle, now after upping the pilots to 45s, my air mixture screws have no effect when turned all the way in!Think I went to far with the 45s,going to try 42s and see if it helps.But I do believe drilling the airbox made a differance!Bike even sounds better!
