Jeff,
The silent exhaust that NorTech designed. Exhaust exits under #6 transom assembly. No solenoid in that one, no moving parts!

NorTech's design or downturns is most reliable - no choking off of exhaust when running and no moving parts.

That's what I wanted, but Nortech has not done one on a V yet, just the cats. I really prefer this system, nothing to go wrong, quieter, and thats what I'm after. Hopefully Terry will get it handled. Im starting a new thread, boat has started today, Build pics to follow...Terry is trying to get the boat done by end of Sept. Jeff

here is a 50 with the 'stealth' exhaust....

I guess they can't do them on the diesel V's, but it's obvious that the gas is ok, thats great news for the gas guys, thanks Jeff

They bolt on "normal" Nor Tech pipes but mine were 6.5" Stellings.
I've never seen turn downs on a Nor Tech cat.
But I'd love to see some pics if anyones done it.

The ones I have are more than likely CMI's and measure 6", problem I've been running into is no one seems to have anything that will work with a tube that big.

I've put in a call and sent a couple of emails to Nor-Tech but haven't been able to get anyone to respond yet, I'll probably give them a shout again in the AM...

I can't believe this is an isolated occurance (noise level) and hasn't come up before with them....

Then your decision is made....700's!

No it's not the first time.
I spent Thounds of dollars to try and be legal.
The GGBs will fit over your pipes mine were a half inch bigger.
Here's a pic of the law breakers of LOTO......well mainly Jim.

This afternoon I spoke with Bob down at Nor-Tech he's going to see if there is something that they can help me with on the "Silent Choice" evidently since this was one of the first 3600's it has them and others do not.

If I can get replacement flapper/diverters for them I should be able to at least meet the idle requirement but that's not a solution.

As for the GGB's I though they folded and were no longer in business, has someone bought their assests or making the same units?

I found some GGB Insert's on eBay and figured I'd give them a try.

If you need any help give me a call.