Join Date: Apr 2012
Location: Clermont Florida
[QUOTE]This mod now complete. Took about 15mins. Started with 10" long 5/32 punch. Cut through steel with ease. Once big enough used a 10" 3/8 punch. Nice and clean and no shavings to clean. Started with the drill but chip first bit. So used planned be to my amaze. Nice deep sound and not annoying to hear.
I finally got around to doing this mod on my GTL and I have to say the sound is so much deeper and I love the new sound. I did the mod slightly differently, I used two different sizes of tapered punches and opened up the two 4.5 mm holes in each of the pinched off pipes.
I started with a 7" 5/32" taper punch to elongate the hole then followed up with a 9" 3/16" taper punch and hammered it in to about the 1/4" diameter mark on the punch then twist the vise grips to get the punch loose, do this to the other seven holes and you will be amazed at the sound.
Darryl and Jan Gray
2012 K1600GTL BLUE bought 30 Mar 2012 Orlando BMW