V&H SS Standard to Quiet Baffles & Dyno Results
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V&H SS Standard to Quiet Baffles & Dyno Results - 5/20/2008 11:26:20 AM
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NA7A
Posts: 198
Joined: 11/20/2007
Status: online
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FYI only guys and gals:
Just had the bike dyno tuned after taking out the V&H standard baffles (low restriction) and adding the quiet baffles.
Dyno showed 4 hp loss, went from 76 hp to 72 hp.
Most of the curves stayed pretty much the same.
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RE: V&H SS Standard to Quiet Baffles & Dyno Results - 5/20/2008 2:04:22 PM
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hogsport
Posts: 775
Joined: 8/21/2007
From: Gahanna, OH
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Let's seeum
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2005 XL1200 C
TAXES PAID
V&H SHORT SHOTS
PROGRESSIVE 12" 412
EXTENDED FORWARD CONTROLS
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RE: V&H SS Standard to Quiet Baffles & Dyno Results - 5/20/2008 2:52:51 PM
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PigInaBlanket
Posts: 3914
Joined: 5/27/2006
From: Virginia
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What about the torque? If you say the curve stayed about the same then it should have lost torque as well shouldn't it have? I thought I heard some people saying that it gained torque by adding the quiet baffles.
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Current bike: 2007 Street Bob
V&H Short Shots, SE ac, PC III, forward controls
Previous bike: 2005 Sporty NRHS 883/1250C conversion AKA oil guzzler R.I.P.
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RE: V&H SS Standard to Quiet Baffles & Dyno Results - 5/20/2008 6:48:57 PM
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Booey420
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From: Fairview Park,Ohio
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100th Anniversary 883r
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RE: V&H SS Standard to Quiet Baffles & Dyno Results - 5/21/2008 6:08:46 AM
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NA7A
Posts: 198
Joined: 11/20/2007
Status: online
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I forgot to bring them into work today to scan...I will get that done and post them tomorrow.
What I noticed most was a more controlling power at the low end meaning, when I start off from a stop I dont have to give it a lot of gas to get going. It just seems smoother and the torque comes alive right from the start. When I was running the standard baffles I had to give it lots of gas to get it going.
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RE: V&H SS Standard to Quiet Baffles & Dyno Results - 5/22/2008 8:51:35 AM
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CKinAZ
Posts: 771
Joined: 10/4/2007
From: Cave Creek, AZ
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Compare hp and tq at 3000 4000 and 5000 rpm... Quiet baffles made higher numbers up until about 4800 rpm.
Peak torque went up from 75.09 to 76.88. Almost 2 lbs-ft.
It was also running leaner at 3500 to 4000 rpm. This could account for some of that added power.
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Chuck
07 FLHT
Rush 1.5's, Stage 1 download, KN-1499 filter, Nightrider IED's
McCain in '08
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RE: V&H SS Standard to Quiet Baffles & Dyno Results - 5/22/2008 10:04:28 AM
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NA7A
Posts: 198
Joined: 11/20/2007
Status: online
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One more obvious change is the noise, I love LOUD pipes but on long rides it was deafing and installing the quiet baffles was a really nice change. Of course when you get on it, the sound seems to be just as loud. (nothing a good pair of earplugs wouldnt fix)
< Message edited by NA7A -- 5/22/2008 1:49:30 PM >
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RE: V&H SS Standard to Quiet Baffles & Dyno Results - 5/22/2008 12:14:51 PM
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hogsport
Posts: 775
Joined: 8/21/2007
From: Gahanna, OH
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NA7A,
Thanks for the post. Looks like a slight increase in hp and torque up to 4.5k, whick is probably the rpm range I use anyway. I like my Quiet Baffles even better now. You are dead on regarding the nice change in sound. A friend riding behind me when I had the open baffles said he felt like he was being shot at
I guess the perfect baffle would have a butterfly which would be restrictive until 4500 rpm, then open up?
_____________________________
2005 XL1200 C
TAXES PAID
V&H SHORT SHOTS
PROGRESSIVE 12" 412
EXTENDED FORWARD CONTROLS
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