It's soon time to buy some exhaust mufflers with all of the noise restrictions. So who makes the best? Most of them only reduce the noise levels around 10 Decibels. I'm running a 600hp.

Last year I was ok with SAE J 134 @ 86 db. Now with SAE J 2005 here in ca there is no way. I went with tips under water, Shh, can you hear me now. verry stealthy till I get on plane. twin 496 ho

BBB,
Do you have the Gibson Power Curves? I just got off the phone with Dana Marine and they are sending me their "Sample" Power Curve to test fit on my Nordic! What a cool idea!
Should be here by Wed.
Dean

actualy I made my own last year, cut itps off, welded 4 in. 90 deg s.s. elbows, and then welted the tips to them. 160.00 all done

I'll sell you a set og Gibsons for $800.00 for the pair (2 sets) they have been used a few times only.

Hmmm, I'm seeing a whole lot of Gibsons for sale or in the dumpster. I've pulled a few sets off lately.
Try the GGB's, they actually "work" without robbing all that expensive HP.
http://www.ggb.ca/

I have special pricing on the GGB's for OSO members.

Fionn (Finn)
[email protected]
925.952.4240
510.541.8124

Lofty,
Have seen any Gibson Power Curves in the dumpster? I just want to silience my boat @ idle, since I'm the Merritt Is. IDLE King!
We really aren't being hasseled about noise here in M.I. FL. YET, so I want to try the Power Curves.
Thanks,
Dean

Lofty, Thanks GGB's look great with plenty of options.

Definatly go with the GGb's no loss of horsepower, but will bring you down at least 10 db's

They work!