Found these on Ebay. I paid $88 with shipping. Copy and past this # 102251368791 in the ebay search engine. There is two sets left . Ill use a 4" furnco coupling from Home depot to connect them. I only need them when I am on lake George. This past weekend I got a $200 loud exhaust ticket , 98.8 db Not bad , 1st ticket I ever got on the lake . it was only a mater of time before I got caught.

Getting mine in a few days but i have talked to Bob the Builder about them and he says no loss of power at all... if anything it will help with reversion...

how much db reduction at idle with those? as compared to cmi sound elimination system? for 5 inch. thanks if anyone here knows

..they look like reversion invitations to me..

do you really think that water is going to get back up that far? maybe on decel?

5" diameter pipe vertical for 12" then the whole header set up to pump upwards about conservatively 36" equates to over 4 Gallons of water being vacumed in ...

you'll need serious vacum to draw that on a couple pistons being in vacum at exhaust during the overlap with a volume of 0.35 gallons each (based on my 653cu/inche engines) when another 2 pistons are pushing out expanding gases before the cam overlap...

Just my humble opinion.

on deceration, it can't get pushed up there? that seems like a lot of pressure when coming off plane,

My rig has been Donkey Dicked.

Before...

After...


By the way I now have a complete set of 5" CMI switchable exhaust with compressor for sale!!!

Since I have now catered to the "your boat is to loud" spotted owl kissing, bark chewing crew I will also be shopping for:
-A hybrid car
-A beret
-A beard
-A welfare check
-Hemp clothing
-ACLU Membership
-A Free Tibet bumper sticker
-A Government controled healthcare system
-A Democratic Party Registration card...