Exhaust turn-downs: How deep under water?

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09-27-2017 | 05:40 AM

#21

PARADOX

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Joined: Dec 2005

Posts: 2,798

Likes: 13

From: Florida

Here is a custom CMI underwater kit. For sale too.

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09-27-2017 | 08:15 AM

#22

sprsptr

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Joined: Jan 2016

Posts: 468

Likes: 9

From: New Hampshire

GGB inserts

Quote:

Originally Posted by GK

I'm running 1400 hp Teague motors at 110 decibels. I must get the noise down to 90. I just purchased turn downs from Gibson. Any suggestions or concerns I should be aware of?

- Reversion? - Motors stalling at idle? - How deep should they be? - Back pressure relief holes?

Any suggestions would be helpful. Thanks

I am running 653" supercharged Zul's with GGB 12" inserts in my dry Stellings headers. Made a huge difference in noise level with no discernible performance change.You may need more than just down turned pipes to satisfy your needs, but I am pleased with the GGB inserts.