short shots
Outstanding HDF Member
Joined: Aug 2012
Posts: 2,442
Likes: 418
From: South Carolina
I'll vouch for the DK TTIs, I just installed the W158s in my Street Bob with V&H short shots...did NOT like the sound of the shorts, was going to replace the system. Ordered the TTIs and I'm VERY happy with the sound now. Deeper, no tinniness, and the flat spots in the lower-mid range of the powerband are gone.
More linear power delivery, better sound, and only $30 with shipping? No-brainer.
More linear power delivery, better sound, and only $30 with shipping? No-brainer.
Road Warrior
Joined: Jun 2014
Posts: 1,354
Likes: 766
From: north Carolina
I was thinking of ordering the quiet baffles for my short shots not because they are too loud but because I noticed a big loss of low end torque after install and I could stand a deeper tone. After reading this I may order these if you think they will have the same effect.
I was thinking of ordering the quiet baffles for my short shots not because they are too loud but because I noticed a big loss of low end torque after install and I could stand a deeper tone. After reading this I may order these if you think they will have the same effect.
The V&H Quiet Baffles won't bring back your loss of low end torque, they'll quiet the overall tone somewhat but they don't bring back the loss of the lower end torque to any great degree. The Thunder Torque Inserts work differently, they increase exhaust velocity and scavenging and help prevent reversion of air in to the system. The TTI's bring back the low and mid range, they deepen the tone of the exhaust removing the bright brassy overtones. With baffles out and the Thunder Torque Inserts you'll have a better exhaust tone and improved low and mid range performance.
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Support@DKCustomProducts.com
Road Warrior
Joined: Jun 2014
Posts: 1,354
Likes: 766
From: north Carolina
The V&H Quiet Baffles won't bring back your loss of low end torque, they'll quiet the overall tone somewhat but they don't bring back the loss of the lower end torque to any great degree. The Thunder Torque Inserts work differently, they increase exhaust velocity and scavenging and help prevent reversion of air in to the system. The TTI's bring back the low and mid range, they deepen the tone of the exhaust removing the bright brassy overtones. With baffles out and the Thunder Torque Inserts you'll have a better exhaust tone and improved low and mid range performance.
Air entering the exhaust is called reversion and it's a common problem with a free flowing exhaust. The DK Custom Products Thunder Torque Inserts were designed to increase the velocity of the exhaust gas exiting the system. The 'W' model is a patented design that creates a venturi effect due to its shape, the 'cup' side of the TTI facing the end of the pipe helps prevent air reversion back in to the exhaust which will help minimize the decel popping you're hearing.
Last edited by DK Custom Products; Jan 24, 2016 at 07:24 AM. Reason: added image
Road Warrior
Joined: Jun 2014
Posts: 1,354
Likes: 766
From: north Carolina
Some incorrectly believe the decel popping and burbling they hear is created by a 'lean' tuning condition. What is actually happening is fresh air is entering the exhaust system mixing with the unburnt fuel coming out of the engine under off throttle situations. When the air-fuel ratio is correct within the pipe the fuel can burn off in the hot exhaust and that's what you're hearing.
Air entering the exhaust is called reversion and it's a common problem with a free flowing exhaust. The DK Custom Products Thunder Torque Inserts were designed to increase the velocity of the exhaust gas exiting the system. The 'W' model is a patented design that creates a venturi effect due to its shape, the 'cup' side of the TTI facing the end of the pipe helps prevent air reversion back in to the exhaust which will help minimize the decel popping you're hearing.
Air entering the exhaust is called reversion and it's a common problem with a free flowing exhaust. The DK Custom Products Thunder Torque Inserts were designed to increase the velocity of the exhaust gas exiting the system. The 'W' model is a patented design that creates a venturi effect due to its shape, the 'cup' side of the TTI facing the end of the pipe helps prevent air reversion back in to the exhaust which will help minimize the decel popping you're hearing.
Outstanding HDF Member
Joined: Aug 2012
Posts: 2,442
Likes: 418
From: South Carolina
FWIW, I had a ton of decal pop before, I'd say the TTIs got rid of 80-90% of it with no other mods. I can still get it to pop by winding it out and snapping the throttle shut, but under normal conditions it barely pops at all. I'm guessing you could get more or less pop by rotating the TTIs after they're installed but I haven't messed with that yet (too snowy this week).
Road Warrior
Joined: Jun 2014
Posts: 1,354
Likes: 766
From: north Carolina
FWIW, I had a ton of decal pop before, I'd say the TTIs got rid of 80-90% of it with no other mods. I can still get it to pop by winding it out and snapping the throttle shut, but under normal conditions it barely pops at all. I'm guessing you could get more or less pop by rotating the TTIs after they're installed but I haven't messed with that yet (too snowy this week).
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Outstanding HDF Member
Joined: Aug 2012
Posts: 2,442
Likes: 418
From: South Carolina
Man, it's probably one of the cheapest, best-bang-for-the-buck things you can get for your bike. Hell, people drop $100 for a new pair of handgrips - these are $30 shipped and actually make your bike run better. Like I said before, for me it was a no-brainer.