Exhaust System Topics New and old exhaust system discussions. Fitment issues to sound bites and suggestions. Post them here.

D&D Interceptor Mufflers

Thread Tools
 
Search this Thread
 
Old Feb 12, 2008 | 08:10 PM
  #1  
Bug's Avatar
Bug
Thread Starter
|
Road Master
Joined: Oct 2006
Posts: 867
Likes: 1
From: Texas
Default D&D Interceptor Mufflers

Anyone have these? I am getting some on my Ultra.
I had CVO Screamin Eagle Slip-ons and I am getting the stage one air cleaner with the SERT and apparently the SE muffs were not high-flo enough.
I tried doing a search on the forum and nothing comes up. Not sure if the search is broken or just nothing has been posted about them.

Just looking for others impressions on, sound, performance, looks, etc.
 
Reply
Old Feb 15, 2008 | 04:29 PM
  #2  
Bug's Avatar
Bug
Thread Starter
|
Road Master
Joined: Oct 2006
Posts: 867
Likes: 1
From: Texas
Default RE: D&D Police Interceptor Mufflers

Well I just picked up my bike and all I can say is Wow! Better than I had hoped for.

The new mufflers sound great and from the short ride home it really pulls a lot harder.

I'll try to get it out this weekend and give it a more complete test drive. The weather is pretty sucky right now.

Anyone else have these mufflers?
 
Reply
Old Feb 16, 2008 | 06:57 AM
  #3  
TNBagger's Avatar
TNBagger
Cruiser
Joined: Jul 2007
Posts: 159
Likes: 2
From:
Default RE: D&D Police Interceptor Mufflers

Bug, please post the results of your test ride with the new mufflers after a workout. I need quieter mufflersdue to bad tinnitus so I am interested in how they sound compared to stock as well as how your bike now runs. I noticed that the SS police mufflers on the D&D web site had a slightly golden color. Are yours colored or more chrome looking? Also, did you get a good price on them?
 
Reply
Old Feb 16, 2008 | 09:48 AM
  #4  
Bug's Avatar
Bug
Thread Starter
|
Road Master
Joined: Oct 2006
Posts: 867
Likes: 1
From: Texas
Default RE: D&D Police Interceptor Mufflers

Hopefully will put some miles on it this Sunday. Tornados and big storms heading my way right now.

I would not characterize the mufflers as quiet. I only rode about 5 miles on them yesterday and while cruising, the sound for me, (the rider), is a nice rumble and did not interfere with the sound system, but with hard throttle they have a great bark. I drove into the the driveway and then garage and before getting off hit the throttle a couple of times and it can get pretty loud. After coming into the house I asked one of my daughters if they heard my new pipes and she said "Yeah I thought it was thunder."

The mufflers are polished stainless steel and have a chrome look not golden colored. I got them for $305 but I think they are usually about $395 to $450 depending on who you buy them from.

Here is a link: http://www.danddexhaust.com/catalog/2007/06/40812b.htm When I first posted this I thought what I had was the Police Interceptors because the tech called them Interceptors (which they may be called) but the model on the reciept is 408 12B and they look longer than the police versions.

Here is my dyno chart if you are interested. No engine mods on my 2007 Ultra with 96 ci other than the mufflers, stage I SE air cleaner, SE race tuner.




[IMG]local://upfiles/20078/A1E3E4CB1FF24381B27EDD5A0B952596.jpg[/IMG]
 
Reply
Old Feb 16, 2008 | 09:57 AM
  #5  
Bug's Avatar
Bug
Thread Starter
|
Road Master
Joined: Oct 2006
Posts: 867
Likes: 1
From: Texas
Default RE: D&D Police Interceptor Mufflers

This is the closest video clip I can find on the D&D site.

http://www.danddexhaust.com/catalog/mpeg/408-12T.mpg
 
Reply
Old Feb 16, 2008 | 11:58 AM
  #6  
riconot's Avatar
riconot
Advanced
Joined: Sep 2007
Posts: 73
Likes: 1
Default RE: D&D Police Interceptor Mufflers

I've put a few hundred miles on my '07 roadglide since adding D&D police interceptors. The first couple hundred were with no mods, just the mufflers. I immediately had a new feeling bike. It seemed to pull better, pull longer and was so fine while decelerating under compression. The sound was louder than stock and maybe a little lower note, but not much. I was happy with just the mufflers but decided to do a K&N and dynoed SERT to be safe. Things did get better, but just the mufflers were great. I had the bike dyno tuned at Latus in Portland. With just mufflers, I had a beautiful torque curve with max 66.22hp and 85.63 ft lb torque. After the AC and tuned Sert, I had 70hp and 87.01 ft lb torque. Before and after was the same until 3000 rpm but after the AC and tune, the torque and hp went higher and stayed longer. I'm too stupid to know how to post the chart, but it is very similar to BUG's. A very nice even curve. Bottom line, sweet performance with just the D&D mufflers and better with the tune. The stainless steel is highly polished but is just a tone off of chrome and I assume it will color a little. I like the look.
 
Reply
Old Feb 16, 2008 | 01:33 PM
  #7  
TNBagger's Avatar
TNBagger
Cruiser
Joined: Jul 2007
Posts: 159
Likes: 2
From:
Default RE: D&D Police Interceptor Mufflers

Thanks for the reviews, guys. It looks like the police model is 408-14B so Bug must have gotten the louder pipes.
 
Reply
Old Feb 16, 2008 | 03:57 PM
  #8  
Bug's Avatar
Bug
Thread Starter
|
Road Master
Joined: Oct 2006
Posts: 867
Likes: 1
From: Texas
Default RE: D&D Police Interceptor Mufflers

Yes, a little research on the Internet and it says on the Phat Performance site that the 408 12B is marketed as the "Big Boss" not the "Interceptor". The service rep said "Interceptor" before they were installed. Anyway I like the sound. I think the description below is about right, "Great aggressive sound on the throttle with milder note at cruising speed."

D&D 3-1/2" ‘Big Boss’ Back Cut Slip-On Exhaust - Dressers (95-UP)
[ul][*]D&D Performance-based 3 1/2" slip-on with Back Cut tip provides more power and more torque with the great Harley rumble.[*]This exhaust system is extended in length and comes with baffles[*]Pick up some easy horsepower and awesome sound with these high-performance slip-ons. Great aggressive sound on the throttle with milder note at cruising speed.[*]Double-chambered removable baffle core [/ul]
 
Reply
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom

 Verdad Gallardo
story-1

6 Weirdest Harley-Davidsons Ever Sold to the Public

 Verdad Gallardo
story-2

7 Times Harley-Davidson Chucked Tradition Out the Window

 Verdad Gallardo
story-3

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-4

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-5

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-6

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

 Verdad Gallardo
story-7

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

 Verdad Gallardo
story-8

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-9

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
Old Feb 17, 2008 | 09:17 PM
  #9  
Bug's Avatar
Bug
Thread Starter
|
Road Master
Joined: Oct 2006
Posts: 867
Likes: 1
From: Texas
Default RE: D&D Police Interceptor Mufflers

TNBagger,
I put about 150 miles on the bike today and put her through her paces.

As for the sound, the muffs I have are longer than the police interceptors which I think helps keep some of the sound level down while crusing for the rider.

These are not super loud when cruising. When you hit the throttle though the sound is pretty aggressive.

As for performance I am very pleased. Very responsive, pulls hard at almost any speed. Got up to 103 mph at some point during my ride according to my GPS and it still had more power to go.

I'm not sure what the difference in sound is between mine and the Police Interceptors but I am very pleased with mine.

Took the wife ona short ride to dinner tonight and she likes them as well.
-Bug
 
Reply
Old Feb 18, 2008 | 07:33 AM
  #10  
TNBagger's Avatar
TNBagger
Cruiser
Joined: Jul 2007
Posts: 159
Likes: 2
From:
Default RE: D&D Police Interceptor Mufflers

Thanks for the report, Bug. I could tell from your dyno chart that your new D&D mufflers don't have a back pressure problem. It's nice living in the South where we can ride in Winter but last summer when it hit 106 here was a different story.
 
Reply



All times are GMT -5. The time now is 12:14 PM.

story-0
Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom

Slideshow: Killer Custom's latest build relies on styling changes rather than performance upgrades, giving the cruiser an entirely different personality.

By Verdad Gallardo | 2026-06-03 18:28:05


VIEW MORE
story-1
6 Weirdest Harley-Davidsons Ever Sold to the Public

Slideshow: From military-inspired singles to scooters and three-wheel utility vehicles, these Harleys took the company far outside its comfort zone.

By Verdad Gallardo | 2026-06-02 18:34:10


VIEW MORE
story-2
7 Times Harley-Davidson Chucked Tradition Out the Window

Slideshow: Harley-Davidson built its reputation on nostalgia, but every so often, the company took a hard left turn into the future.

By Verdad Gallardo | 2026-05-20 11:18:19


VIEW MORE
story-3
7 Surprising Harley-Davidson Products that Are Not Motorcycles

Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-4
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-5
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-6
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-7
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-8
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-9
Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE