I did the 5 min exhaust mod quite a while back and it's great! I have over 31,000 miles and have had no negative issues with it. Runs great, same MPG (except it sounds better, so I tend to rev higher, thus a little less MPG's ). I wouldn't say it makes the exhaust very much louder, but it gives it a deeper rumble that sounds SO much better than the stock. Totally worth doing and you can't even tell I did anything to it...looks completely stock.What are the downfalls of poking a hole in your exhaust? Do you lose HP? Do you lose MPG? Does it pop on deacceleration? Some people have told me to absolutely NOT do that, then I see a lot of people on here do it with no complaints. What have people personally experienced with poking holes in their exhaust other than a louder sound? Cause that's what I'm looking for in an exhaust. But I don't wanna ruin my exhaust and end up having to buy my Two brothers just because I ruined my OEM exhaust by poking holes in it.
When doing the mod, it feels a little barbaric, hammering into the exhaust and all....but trust me, it's worth it. I can afford to buy a new exhaust, but I don't want to spend that kind of money when I think the bike sounds perfect (for me) now with that mod.