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Another decel popping question...

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Old Mar 30, 2007 | 11:42 PM
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Default Another decel popping question...
I have an '07 Heritage with SE air cleaner, V&H BSS, and SERT with map Map 67 (159AE003). I get a lot of popping on deceleration and even occasionally when upshifting. The warmer the weather gets themore it seems to pop.

Any help would be appreciated.

Thanks,
Jim Dawson
 
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Old Mar 30, 2007 | 11:51 PM
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Default RE: Another decel popping question...
You will need to have it dialed in professionally....

The V&H mufflers are normally equipped with "Cheeses Grater" Baffles.....

Nothing more than a tube of steel with louvers..... No backpressure....

Plus you no longer have that small crossover between the two head-pipes.....

That map is merely a starting point... It was designed for HD/SE components, but is adaptable to others with proper equipment to tune in the VE, spark, etc...
 
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Old Mar 30, 2007 | 11:59 PM
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Default RE: Another decel popping question...
ORIGINAL: Shovelhead Bob

You will need to have it dialed in professionally....

The V&H mufflers are normally equipped with "Cheeses Grater" Baffles.....

Nothing more than a tube of steel with louvers..... No backpressure....

Plus you no longer have that small crossover between the two head-pipes.....

That map is merely a starting point... It was designed for HD/SE components, but is adaptable to others with proper equipment to tune in the VE, spark, etc...
Thanks for the quick answer Bob, I was afraid of that. I did install the "quiet baffles" which are a bit more restrictive than the stock ones and are glass wrapped. The pipes do have that "Power Chamber" crossover, for wahtever that's worth. I guess I'll have to pony up the money to get it dialed in.

Jim

 
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Old Mar 31, 2007 | 01:03 AM
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Default RE: Another decel popping question...
Check the exhaust for leaks. That will cause that as well.
 
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Old Mar 31, 2007 | 01:05 AM
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Default RE: Another decel popping question...
Yup, check the headpipes to be sure they are torqued to spec... then tend to loosen up.
 
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Old Mar 31, 2007 | 08:26 AM
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Default RE: Another decel popping question...
ORIGINAL: j2dawson

I did install the "quiet baffles" which are a bit more restrictive than the stock ones and are glass wrapped. Jim
I put the Quiet Baffles in my Big Shots Staggered and also notice more popping on the decel.....hmmmmm.
 
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Old Mar 31, 2007 | 08:59 AM
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Default RE: Another decel popping question...
Thanks for the suggestions. I retightened the pipes a few days after the install, but maybe they have loosened again.

Jim
 
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Old Mar 31, 2007 | 09:02 AM
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Default RE: Another decel popping question...
Make sure that they are lined up straight where they go into to the head. sometimes that gasket doesn't seat right. It doesn't take much for a small leak.
 
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Old Mar 31, 2007 | 09:06 AM
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Default RE: Another decel popping question...
I used the Screamin' Eagle gaskets, as recommended by the dealer. They look much thinner than the stock ones. I'll pull the pipes down and see if they look ok and retorque them.

 
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Old Mar 31, 2007 | 09:13 AM
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Default RE: Another decel popping question...
I think you'll have better luck with the stock gaskets. The bevel causes them to seal AROUND the pipe as well as sealing at the flat mating surfaces.
 
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