Mine are 730 HP and did not notice any power change only change is that I can talk now to my family while on the move.

Thanks for the update. Sounds like they are doing their job without taking down rpm/hp.

Rick

i just ordered a pair of teague st-450's. have not tried them yet. the thing i liked about them was the muffler is in the boat and the tips look like regular tips.

Dr. Santiago, Just curious if you went with the clamp-on HPI's? Thanks! Steve

Peconic

I was wondering if you have run the boat ? Let me know what you think.

Thanks
Dan

509 SC:
Yes, I did the clamp-on.

barry-I have the Teagues on my boat. Now my boat is extremely loud (I'll see if I can get a reading this weekend) and they make a very noticeable difference. I'm proably not legal though. Nice pieces and I'm quite satisfied with them.

anybody have a set of the shotguns used for sale?

I had shotguns on my old boat. The took a little of the bark out at idle, but made no other changes. There are other mufflers out there for about the same money and are much more effective. Their looks are not as good as the Drews though.

Its still my opinion that switchables (legal or not) should not be used with big blowers and EFI. My IMCO Gatlins are 6" dia by 22" long and let out a very mellow, big block sound. Must be a regional thing, lots of them in the west...