Exhaust collars for NPP duel mode
03-24-2013, 12:52 PM
#1
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Exhaust collars for NPP dual mode
Who has these installed and how do you like them? I've been thinking of getting a set to add with my M2W.
Last edited by Iconic; 03-24-2013 at 01:19 PM.
03-24-2013, 12:59 PM
#2
Team Owner
I have a set, but they are not installed. I like the sound with it wide open, and only close them during early morning cruising through my very quiet neighborhood.
03-24-2013, 01:03 PM
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I have them installed and are still experimenting some. They're nice as you can determine how much you want the valves to close if you don't want the complete silence.
03-24-2013, 01:06 PM
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St. Jude Donor '15
"In honor of jpee"
I think I'm one of the few that do have them on, and have for about three years. Excellent is my opinion (don't have M2W). Keeps them open just a bit all the time which means I hear the exhaust the way I like it throughout the rpm range, and when I floor it, it's wide open. Had to adjust them more closed than I thought---too much noise at 1/4 open.
03-24-2013, 01:36 PM
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Who sells these?
03-24-2013, 01:43 PM
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03-24-2013, 02:07 PM
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St. Jude Donor '15
"In honor of jpee"
03-24-2013, 02:15 PM
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03-24-2013, 02:36 PM
#10
Safety Car
I installed the collars to keep it slightly open (about 1/4") all the time.
The sound was perfect for me. Works great, very pleased!
The collars are easily adjustable... you can fine-tune the "quiet" mode... make it exactly as loud as you want!
With the engine off...
With the engine at idle...
Of course, this does NOT affect the NPP's normal operation -- it still fully opens the exhaust above ~3500 rpm.
And with an exhaust controller (M2W, Sunset Orange) you can still remotely fully-open the exhaust whenever you want.
The sound was perfect for me. Works great, very pleased!
The collars are easily adjustable... you can fine-tune the "quiet" mode... make it exactly as loud as you want!
With the engine off...
With the engine at idle...
Of course, this does NOT affect the NPP's normal operation -- it still fully opens the exhaust above ~3500 rpm.
And with an exhaust controller (M2W, Sunset Orange) you can still remotely fully-open the exhaust whenever you want.
Last edited by CO Lightfoot; 03-24-2013 at 02:42 PM.
I had the collars on my grand sport, and now have them on my 427 Convertible..... the NPP quiet mod is just too quiet for me
03-25-2013, 10:30 AM
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Thanks gents! I agree that the exhaust is just too quiet with the valves completely shut. I'm going to install a set of these collars.
03-25-2013, 10:59 AM
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03-25-2013, 11:06 AM
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Mc Master-Carr "Two-Piece Clamp-On Shaft Collars"?
What is the diameter of the shaft???
03-25-2013, 12:35 PM
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03-25-2013, 12:40 PM
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03-25-2013, 12:43 PM
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St. Jude Donor '15
"In honor of jpee"
I just ckd his website and unless he's just out of them, it's still on his website under mild to wild. Can't list website 'cause he's not a vendor but you know where to go. Plus, I did forget in my post that extra long allen wrench to adjust the screws. Seems flimsy but is thin and high strength!
