I think it would make much more sense to switch to center-riser manifolds before you go to thru-hulls. On log manifolds, the risers are much closer to the water line - you don't have that 13 inch gap that you need. Plus it will be very difficult to fit a 90 degree elbow turned toward the transom under those risers. The only way to get around the Y-pipe would be to remove it, which is a real pain (need to pull the motor). But still, if you throttle down too quickly with that setup, you will end up with much bigger problems. I'd vote for center risers, or to keep what you have. Some people say the noise of thru-hulls gets annoying after a while (although I've been running mine for 2 seasons now and still love waking everyone up on the lake just as much as I did at first).

Someone left me a love letter on my truck. I reported the threat to the police. Yeah, my boat's loud and if you want peace and quiet then don't move onto an all sports lake! This is so crazy I framed a copy and it's hanging on the wall at my cabin!

Does that note imply that anything offensive to the senses should be oppressed? What would we do with the hideous spouse of that note writer? Should they have to stay indoors during daylight hours? People are ridiculous.

Carl I know the what you mean. The classics are super loud. I have to shut mine off anytime a friend pulls up and wants to talk. It still doesn't get annoying in my opinion. I do feel bad when I use the dock over night and amore only coming in at 2am. I just tell the marina that it came that way from the factory I can't change it. That's why the 2nd boat with thru hulls below the water line is great. You get the noise when on plane but can talk while putting around at night.

Same in MI, and it is misinterpreted the same way. A "cut-out" is something to make quiet exhaust loud. Silent choice/captain's call is something to make loud exhaust quiet. Moron water patrol were using it to write tickets here a few years ago.

Where it comes into play is your exhaust has to pass the bd readings for your state both ways. If it does, you are good to go.

100% correct I should have read all the threads before I responded.

To answer the OP's question. The only time it got old on my boat was on a 45 minute no wake triop with a broken stereo. As much as I love the sound of a rumbling big block at idle, it got old after about 15-2o minutes. LOL

I have Q&Q but only use it at idle speeds with the 525. I don't boat after dark. Also on the Great Lakes and connecting waters there are no speed or noise restrictions. Or if there are they aren't enforced.

My go to water ski boat was a 16' Donzi powered by an AQ260A connected to a VP DuoProp. The best time to ski on Lake Washington is about 6:30AM. The water drained out of the raw water system while the boat sat. No matter how softly I would start it up the neighbors often told me they should have come skiing because they were now awake.

I completely eliminated my silent choice last year. Don't regret it at all. Never used the switchable exhaust and cleaned up my bilge big time removing all of the hardware from the factory system. Also lost about 250 lbs in the rear when I remove it and put stainless marine manifolds on. I hope it's a cold day in hell when our Carolina lakes try and silence the sound of a pair of pushrod V8 s. As someone noted before, I respect the times I come and go and never sit at the dock or my favorite watering hole revving my motors for attention.