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Author Topic: D+D Exhaust for EFI Enfields  (Read 5801 times)

72westie

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D+D Exhaust for EFI Enfields
« on: August 21, 2012, 04:15:42 PM »
I just received a e-mail from D+D Exhaust about their new system's for Royal Enfield 500 EFI's. They offer Slip-ons and full systems. Slip-ons are either straight or up-swept for $165.00. Full systems are available in either chrome or matte black and are $358.00. 

They list dyno graphs also. Send me a message if you are interested, I am a D+D dealer and can get one coming your way.

Adam

« Last Edit: August 21, 2012, 04:21:38 PM by 72westie »
2001 Royal Enfield Bullet 500 Race Bike:
2008 Ahrma Classic 60's #1 Plate
2009 AMA Vintage 50's #1 Plate
2010 AMA Vintage 50's #1 Plate
http://www.bgmotorcycle.com

rav

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Re: D+D Exhaust for EFI Enfields
« Reply #1 on: August 21, 2012, 05:10:38 PM »
The width seems bigger, is that so? Looks awesome though, a video clip of the exhaust would be really appreciated.

72westie

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Re: D+D Exhaust for EFI Enfields
« Reply #2 on: August 21, 2012, 05:34:51 PM »
I just got home from work, I will check their info in the morning. If their info doesn't state a size, I will give them a call. I will also get the dyno graphs up for you guys.

The full system also comes with a 'Air Filter Power Kit' already figured in with its price. I don't know if I can get a sound clip of video though, but I will see what I can do. I noticed that they are still using the O2 sensor, so no power commander should be needed.
2001 Royal Enfield Bullet 500 Race Bike:
2008 Ahrma Classic 60's #1 Plate
2009 AMA Vintage 50's #1 Plate
2010 AMA Vintage 50's #1 Plate
http://www.bgmotorcycle.com

The_Rigger

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Re: D+D Exhaust for EFI Enfields
« Reply #3 on: August 21, 2012, 05:36:50 PM »
I'd like to see a photo of the upswept model; it doesn't appear on the D+D website yet.
-Dave
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Ducati Scotty

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Re: D+D Exhaust for EFI Enfields
« Reply #4 on: August 21, 2012, 05:58:55 PM »
Is it just a strainght through glasspack?  It looks just like the EMGO reverse cone I have on now but that one is turning yellow and sounds just like stock except for a decel backfire here and there.  More details please :)

Scott

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Re: D+D Exhaust for EFI Enfields
« Reply #5 on: August 21, 2012, 10:17:30 PM »
It must be my eyeballs failing me.
The upper part of the exhaust header looks like it is a 1 7/8" or even a 2" diameter pipe?

I'm guessing at the size but it looks a lot bigger than the 1 3/4" pipe on my G5.
Jim
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Hobbydad

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Re: D+D Exhaust for EFI Enfields
« Reply #6 on: August 22, 2012, 12:05:41 AM »
Looks good, I'm very interested in some details. Nice to see a little aftermarket support.
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GSS

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Re: D+D Exhaust for EFI Enfields
« Reply #7 on: August 22, 2012, 03:01:26 AM »
Very impressive looking. I don't need another exhaust but this one might end up being #4 in my collection after my OEM, Silman short-bottle (excellent but a bit noisy) and Harley (good balance of sound and flow) exhausts!
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72westie

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Re: D+D Exhaust for EFI Enfields
« Reply #8 on: August 22, 2012, 08:48:03 AM »
I will give them a call around lunch time and get more info: pipe size, muffler baffling.

Here are their dyno graphs, the Slip-on muffler graph is shown as having a air-box mod to it, not sure if its a removal or a Uni-filter. The full system graph is shown with the air box removed and a Uni-filter installed.

The first graph is the full system. The BLACK line is the full system and the RED line is a stock machine.

The second graph is the slip-on upswept pipe. The BLACK line is with the pipe, the RED line is a stock machine.

The third picture is the up-swept slip-on.
2001 Royal Enfield Bullet 500 Race Bike:
2008 Ahrma Classic 60's #1 Plate
2009 AMA Vintage 50's #1 Plate
2010 AMA Vintage 50's #1 Plate
http://www.bgmotorcycle.com

BRADEY

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Re: D+D Exhaust for EFI Enfields
« Reply #9 on: August 22, 2012, 10:26:11 AM »
Yup its all very good to show big differences in Graphs, but I am hoping that the exhaust shines in the real world as well !

1 Thump

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Re: D+D Exhaust for EFI Enfields
« Reply #10 on: August 22, 2012, 11:00:04 AM »
Thats about a 10% gain in RWHP. Very impressive.
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Re: D+D Exhaust for EFI Enfields
« Reply #11 on: August 22, 2012, 11:44:48 AM »
I might be the guinea pig on this...I've been itching to do something different w/ my exhaust since i got the bike in May, but haven't pulled the trigger on anything yet.

72westie

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Re: D+D Exhaust for EFI Enfields
« Reply #12 on: August 22, 2012, 12:05:38 PM »
Just got off the phone with D+D. Their engineer who made the pipe is going to call me back hopefully today with the specs. These were just finalized in R+D a day or two ago.

D+D normally makes the pipes as ordered, with none in stock ready to go. The lady said a 2-3 week ship time would be expected from day of order. I will post more info when the engineer calls me.
2001 Royal Enfield Bullet 500 Race Bike:
2008 Ahrma Classic 60's #1 Plate
2009 AMA Vintage 50's #1 Plate
2010 AMA Vintage 50's #1 Plate
http://www.bgmotorcycle.com

motorat

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Re: D+D Exhaust for EFI Enfields
« Reply #13 on: August 22, 2012, 12:07:32 PM »
i want this but don't have the $358 handy.
i'll have to get scheduled for a few extra classes to pay for it.
Joe
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Re: D+D Exhaust for EFI Enfields
« Reply #14 on: August 22, 2012, 12:17:31 PM »
When you speak to him, please ask if the performance of a straight slip on is about the same as the upswept.  I'd like to do a slip on but not a full system.  And we need video!  Gotta hear the beastie!

Scott