THUNDERHEADER!!! Death to your ears!
Ultimate HDF Member
Joined: Oct 2005
Posts: 7,279
Likes: 56
From: Union Bridge, MD
Put my new Thunderheader on this past weekend. It replaced Python Staggered Duals with quiet baffles. After hearing all the hoopla about how loud the Thunderheader was I had some reservations about buying it. Much to my surprise, the Thunderheader is quieter than the Pythons were!!! I am very happy with the sound level.
While taking off the Pythons I also found the rear o2 sensor was disconnected. I had had the bike in the dealer to have the 30 tooth pulley installed and when I got it back I noticed it had developed a vibration that became much more noticeable in the 3000 to 4000 rpm range. I did not want to take it back to the dealer and listen to the standard bullshit of "that's normal" and I thought they might have screwed something up during the install. It was running fine when they got the bike and I know the o2 was connected before they got the bike. That problem is now gone. The bike runs great.
While taking off the Pythons I also found the rear o2 sensor was disconnected. I had had the bike in the dealer to have the 30 tooth pulley installed and when I got it back I noticed it had developed a vibration that became much more noticeable in the 3000 to 4000 rpm range. I did not want to take it back to the dealer and listen to the standard bullshit of "that's normal" and I thought they might have screwed something up during the install. It was running fine when they got the bike and I know the o2 was connected before they got the bike. That problem is now gone. The bike runs great.
Outstanding HDF Member
Joined: Aug 2009
Posts: 2,938
Likes: 4
From: NC
Put my new Thunderheader on this past weekend. It replaced Python Staggered Duals with quiet baffles. After hearing all the hoopla about how loud the Thunderheader was I had some reservations about buying it. Much to my surprise, the Thunderheader is quieter than the Pythons were!!! I am very happy with the sound level.
While taking off the Pythons I also found the rear o2 sensor was disconnected. I had had the bike in the dealer to have the 30 tooth pulley installed and when I got it back I noticed it had developed a vibration that became much more noticeable in the 3000 to 4000 rpm range. I did not want to take it back to the dealer and listen to the standard bullshit of "that's normal" and I thought they might have screwed something up during the install. It was running fine when they got the bike and I know the o2 was connected before they got the bike. That problem is now gone. The bike runs great.
While taking off the Pythons I also found the rear o2 sensor was disconnected. I had had the bike in the dealer to have the 30 tooth pulley installed and when I got it back I noticed it had developed a vibration that became much more noticeable in the 3000 to 4000 rpm range. I did not want to take it back to the dealer and listen to the standard bullshit of "that's normal" and I thought they might have screwed something up during the install. It was running fine when they got the bike and I know the o2 was connected before they got the bike. That problem is now gone. The bike runs great.
Road Master
Joined: Aug 2012
Posts: 854
Likes: 20
From: CT
Stellar HDF Member
Joined: Jan 2013
Posts: 2,464
Likes: 50
From: Rouses Point, N.Y.
vdrop he would love to hear us coming down through town he would think hell is coming for him
Road Warrior
Joined: May 2010
Posts: 1,718
Likes: 15
From: Bay area, CA
Two pissed off motors built like those with thunderheaders is hell coming for you lol. And yea I'd like to hear it too!
Ultimate HDF Member
Joined: Oct 2005
Posts: 7,279
Likes: 56
From: Union Bridge, MD
I would love to hear it in person. YouTube doesn't do exhaust sound justice.
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Stellar HDF Member
Joined: Jan 2013
Posts: 2,464
Likes: 50
From: Rouses Point, N.Y.
Ultimate HDF Member
Joined: Oct 2005
Posts: 7,279
Likes: 56
From: Union Bridge, MD
231 - YouTube atrox88 hope this gives u some kind of idea the sound is much deeper and wails when u get on it.
