Questions for Randy Malick about Extreme Performance Mufflers You Use

Are they a straight thru design with Fiberglass packing or a Chamber Design? And are they louder than the other Mufflers you tested on the Engine Masters BBF IIRC?

Mark Miller wrote:Are they a straight thru design with Fiberglass packing or a Chamber Design? And are they louder than the other Mufflers you tested on the Engine Masters BBF IIRC?

The ones I used were "straight through" ... with some kind of packing ... their shape seems to make them a bit quieter than other "straight through" designs.
They had specific INLET + OUTLET as one side had a 3" i.d. and the other had a 3" o.d.

rmcomprandy wrote:

Mark Miller wrote:Are they a straight thru design with Fiberglass packing or a Chamber Design? And are they louder than the other Mufflers you tested on the Engine Masters BBF IIRC?

The ones I used were "straight through" ... with some kind of packing ... their shape seems to make them a bit quieter than other "straight through" designs.
They had specific INLET + OUTLET as one side had a 3" i.d. and the other had a 3" o.d.

Thanks i have the Magnaflow 3" with the IIRC 6" Round Body on my 466 now and want to quiet it down some!! Not sure how much Resonators would help or even the Really Small 3"  Vibrant Race Mufflers before my Magnaflow Mufflers any thoughts on those ideas?Thanks

Mark Miller wrote:

rmcomprandy wrote:

Mark Miller wrote:Are they a straight thru design with Fiberglass packing or a Chamber Design? And are they louder than the other Mufflers you tested on the Engine Masters BBF IIRC?

The ones I used were "straight through" ... with some kind of packing ... their shape seems to make them a bit quieter than other "straight through" designs.
They had specific INLET + OUTLET as one side had a 3" i.d. and the other had a 3" o.d.

Thanks i have the Magnaflow 3" with the IIRC 6" Round Body on my 466 now and want to quiet it down some!! Not sure how much Resonators would help or even the Really Small 3"  Vibrant Race Mufflers before my Magnaflow Mufflers any thoughts on those ideas?Thanks

The "right size" resonators in the right location will quiet it a bunch; especially interior drone.
There is a Helmholtz equation for that but, I don't know what it is.

The longer the muffler is ... the quieter the sound usually is, externally.

rmcomprandy wrote:

Mark Miller wrote:

rmcomprandy wrote:

Mark Miller wrote:Are they a straight thru design with Fiberglass packing or a Chamber Design? And are they louder than the other Mufflers you tested on the Engine Masters BBF IIRC?

The ones I used were "straight through" ... with some kind of packing ... their shape seems to make them a bit quieter than other "straight through" designs.
They had specific INLET + OUTLET as one side had a 3" i.d. and the other had a 3" o.d.

Thanks i have the Magnaflow 3" with the IIRC 6" Round Body on my 466 now and want to quiet it down some!! Not sure how much Resonators would help or even the Really Small 3"  Vibrant Race Mufflers before my Magnaflow Mufflers any thoughts on those ideas?Thanks

The "right size" resonators in the right location will quiet it a bunch; especially interior drone.
There is a Helmholtz equation for that but, I don't know what it is.

The longer the muffler is ... the quieter the sound usually is, externally.

Thanks