Mine are dry to the tip, mix in at the last inch or so. Its not to bad in the cockpit, though I really didnt realize how loud it was until my brother in law videoed a fly by I did

I had dry to the tip on 4.5" tails and measured 102dba at idle. Blown 509's. Never sounded too loud to me. If I wanted to be quite Id hit the switch on the CMI's tips and never a problem.

My exhaust was dry to the very tip. I installed these last summer and it made a huge difference!

https://www.hardin-marine.com/p-1262...-mufflers.aspx

I'm sorry to add a possible stupid question here. Some of the above replies say the tail pipes are dry until the very end. How is that possible? isn't it wet until the very end, than exiting the water overboard at a different location away from the tail pipes?

They are still water jacketed for cooling purposes, it's just where the water is mixed - after header, into the tail. After the tail into the tip, through the transom. The water in mine still run all the way through the header, through a jumper hose into the tail then out the end of the tail where it diverts into a through hull dump.

I think the CMI website has some good explanations on it.....

you simply inject water into the exhaust it the very end, I have stainless marine. I cut the risers before the water enters the exhaust the exhaust stream and extended the inner and outer tubes then welded the part that injects the water at the end. That took care of reversion issues.

Did you see any loss in power or speed at all. I purchased some 4 1/2” hpi’ clamp ons and would like to do a back to back comparison. If it tames it down a bit with little to no loss in power I’ll be pleased or at least many of the lake owners will.

I don't mean to change the direction of this thread.....I don't know! seafordguy is exactly what I was saying. Unless I'm crazy the water never enters the exhaust. It's on the outside of the exhaust for cooling and inside the double wall. The possible reversion issue comes, I believe, at an idle. The water is exiting the double wall portion of the tail pipe and is being sucked back into the exhaust pipe portion and sadly back into the engine/cylinder. By closing off the double wall and welding a bung to have the water exit separately away from the exhaust it does not get sucked back in. Unfortunately since all these pos headers end up leaking somewhere you still hurt your engine. But, that is an all together different subject

Yes - mine never enters the exhaust at all. I do believe mine have a couple weep holes so the water doesn't get dead headed at the end of the pipe and overheat.....

I run dry to the very tip than out.

The difference over traditional wet is its at the very end and has to come way back to do any damage.

For most that is enough, BTW my chitty e-top headers did finally start leaking,,,,,,, 21 years after new.
Half of that in salt water.