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Jun 14th, 2026
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Joined: Jul 2013
Posts: 3,732 Likes: 79
Talk Morgan Addict
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Talk Morgan Addict
Joined: Jul 2013
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Maybe I will just wait and buy one of the upgrades.
I wish I could hear and compare some of them. Pop over to Grindelwald, Switzerland for the 1st - 3rd Sept. There will be standard, G56, Brooklands and MMC stage 1 all there 
Red Leader 
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Joined: Jul 2015
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Talk Morgan Expert
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Talk Morgan Expert
Joined: Jul 2015
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Maybe I will just wait and buy one of the upgrades.
I wish I could hear and compare some of them. Pop over to Grindelwald, Switzerland for the 1st - 3rd Sept. There will be standard, G56, Brooklands and MMC stage 1 all there It is a long pop!!
kirkusblog.com
2016 M3W John A Prestwich Special
1952 Ford 8N
1968 Honda CL175,and 2018 Ural Retro
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Joined: Jul 2015
Posts: 2,539
Talk Morgan Expert
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Talk Morgan Expert
Joined: Jul 2015
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Has anyone removed just the first baffle? I am so tempted!
kirkusblog.com
2016 M3W John A Prestwich Special
1952 Ford 8N
1968 Honda CL175,and 2018 Ural Retro
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Joined: Feb 2019
Posts: 3,857 Likes: 2
Talk Morgan Addict
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Talk Morgan Addict
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The difference between Stage 1 MMC and stock pipes is pretty dramatic. Stage 1 is loud, especially on acceleration in the lower gears.
The best part of them is the lower end smoothness. Not sure if that is a function of the air cleaner Venturi treatment or the exhaust.
2019 M3W Sold and is now in Las Vegas enjoying the showgirls :-)
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Joined: Feb 2019
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Talk Morgan Enthusiast
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Talk Morgan Enthusiast
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The difference between Stage 1 MMC and stock pipes is pretty dramatic. Stage 1 is loud, especially on acceleration in the lower gears.
The best part of them is the lower end smoothness. Not sure if that is a function of the air cleaner Venturi treatment or the exhaust. I would hazard that it is more air in
Rodger
2018 M3W "Dreamers on the Rise"
2004 Plus 8 (wife's)
old Goldwings and a couple of Harleys
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Joined: Feb 2019
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Talk Morgan Addict
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Talk Morgan Addict
Joined: Feb 2019
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The difference between Stage 1 MMC and stock pipes is pretty dramatic. Stage 1 is loud, especially on acceleration in the lower gears.
The best part of them is the lower end smoothness. Not sure if that is a function of the air cleaner Venturi treatment or the exhaust. I would hazard that it is more air in I thought so too, but the air cleaner is larger in the oem filter, much larger, the venturi stinger is the main difference but it has a smaller air cleaner surface.
2019 M3W Sold and is now in Las Vegas enjoying the showgirls :-)
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Joined: Oct 2012
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Talk Morgan Expert
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Talk Morgan Expert
Joined: Oct 2012
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More to do with the stock exhausts being bloody awful. Huge back pressure from the restrictive baffles leading to poor scavenging of exhaust gasses so a hot nasty mixture in the cylinders. Although the engine runs hot on the standard set up as though it was running lean, it actually seems to run rich as the ECU tries to bring the temperature down. The standard map works well with the Stage one pipes and air filter but it's the pipes that are the biggest benefit. The stage one filter may be smaller than stock but it isn't tightly shrouded so probably allows a fair bit more air in. 10 minutes with a set of tin snips on the filter cover might achieve the same result.
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Joined: Feb 2019
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Talk Morgan Addict
Joined: Feb 2019
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Good point Calum! The Garage 56 air cleaner cover is more open but appears to just be a modified OEM cover.
Last edited by LightSpeed; 02/03/20 04:11 PM.
2019 M3W Sold and is now in Las Vegas enjoying the showgirls :-)
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Talk Morgan Enthusiast
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I did notice an improvement with the G56 cover
Rodger
2018 M3W "Dreamers on the Rise"
2004 Plus 8 (wife's)
old Goldwings and a couple of Harleys
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Joined: Feb 2019
Posts: 3,857 Likes: 2
Talk Morgan Addict
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Talk Morgan Addict
Joined: Feb 2019
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I did notice an improvement with the G56 cover Is the filter and the throat of the venturi the same as OEM?
2019 M3W Sold and is now in Las Vegas enjoying the showgirls :-)
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