Any definitive comparisons on 2-2 vs 2-1 exhausts for 114 M8?
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Tourer
Joined: Aug 2016
Posts: 415
Likes: 125
From: London, England
Any definitive comparisons on 2-2 vs 2-1 exhausts for 114 M8?
Hey all,
When I bought my FXLRS back in July Id intended to get the S&S 2-into-1 pipe for it but it was on back order for a few months so I picked up the Eliminator 300 mufflers as a temporary solution mainly just to improve the sound a bit.
I fitted the baffles to help with reversion and the bike performs incredibly well with the FP3 tune. However its obviously quieter. I guess removing the cat with the mufflers helps it breathe a lot better.
The plan was to get a 2-1 at some point, mainly for looks/sound but Ive noticed a few mentions of how the 2-into-2 exhausts are actually performing better. I cant find the video now but somewhere on YouTube a HD dealer had done a Stage 4 and done 2-into-2.
Has anyone dynod their bike with both setups and seen the figures? Id be super interested to know what the outcomes are.
edit: heres one video, not the one I was looking for and its actually a stage 3
When I bought my FXLRS back in July Id intended to get the S&S 2-into-1 pipe for it but it was on back order for a few months so I picked up the Eliminator 300 mufflers as a temporary solution mainly just to improve the sound a bit.
I fitted the baffles to help with reversion and the bike performs incredibly well with the FP3 tune. However its obviously quieter. I guess removing the cat with the mufflers helps it breathe a lot better.
The plan was to get a 2-1 at some point, mainly for looks/sound but Ive noticed a few mentions of how the 2-into-2 exhausts are actually performing better. I cant find the video now but somewhere on YouTube a HD dealer had done a Stage 4 and done 2-into-2.
Has anyone dynod their bike with both setups and seen the figures? Id be super interested to know what the outcomes are.
edit: heres one video, not the one I was looking for and its actually a stage 3
Last edited by TeeJayEe; Jan 10, 2021 at 01:21 PM.
Thread Starter
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Tourer
Joined: Aug 2016
Posts: 415
Likes: 125
From: London, England
Night and day difference. Its something I mentioned in another thread but seem to be the only one who noticed. I actually thought the bike performed badly with the Eliminators without baffles. HUGE loss of low/mid torque even with a tune. Obviously sounded great but I almost put the stock pipes back on.
Baffles brought it all back and then some. It does come at the cost of volume. Sounds better than stock but not as good as typical aftermarket pipes. I found the same with my old Evo FXDL, huge difference with baffles in.
This is why Im wary of grabbing a 2-into-1 just for looks and sound without seeing some comparison figures. Everyone goes that route because it works on Dynas and it does look cool, but I wanna see some dyno sheets before I spend a thousand on a 2 into 1.
Baffles brought it all back and then some. It does come at the cost of volume. Sounds better than stock but not as good as typical aftermarket pipes. I found the same with my old Evo FXDL, huge difference with baffles in.
This is why Im wary of grabbing a 2-into-1 just for looks and sound without seeing some comparison figures. Everyone goes that route because it works on Dynas and it does look cool, but I wanna see some dyno sheets before I spend a thousand on a 2 into 1.
Last edited by TeeJayEe; Jan 10, 2021 at 01:23 PM.
Thread Starter
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Tourer
Joined: Aug 2016
Posts: 415
Likes: 125
From: London, England
Also saw this, those are some impressive numbers and it has stock head pipes with mufflers. Would be good to see this next to a 2-into-1 pipe.
https://university.fuelmotousa.com/a...haft-shootout/
https://university.fuelmotousa.com/a...haft-shootout/
Grand HDF Member
Joined: Aug 2017
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From: Nowhere
Night and day difference. Its something I mentioned in another thread but seem to be the only one who noticed. I actually thought the bike performed badly with the Eliminators without baffles. HUGE loss of low/mid torque even with a tune. Obviously sounded great but I almost put the stock pipes back on.
Baffles brought it all back and then some. It does come at the cost of volume. Sounds better than stock but not as good as typical aftermarket pipes. I found the same with my old Evo FXDL, huge difference with baffles in.
This is why Im wary of grabbing a 2-into-1 just for looks and sound without seeing some comparison figures. Everyone goes that route because it works on Dynas and it does look cool, but I wanna see some dyno sheets before I spend a thousand on a 2 into 1.
Baffles brought it all back and then some. It does come at the cost of volume. Sounds better than stock but not as good as typical aftermarket pipes. I found the same with my old Evo FXDL, huge difference with baffles in.
This is why Im wary of grabbing a 2-into-1 just for looks and sound without seeing some comparison figures. Everyone goes that route because it works on Dynas and it does look cool, but I wanna see some dyno sheets before I spend a thousand on a 2 into 1.
the only reason I might consider potential 2in1 is I would like to install touring bags later on but I dont like to do any other mods and from what I gathered not all 2in1 pipes work with these bags and I definitely would like to avoid turn signals relocation and looks like this might be needed for rhis conversion as well.
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Tourer
Joined: Aug 2016
Posts: 415
Likes: 125
From: London, England
So Ive been looking into this more, its mainly because I LOVE the low-mid range torque on the bike as it is so I dont wanna lose that, but Im not totally happy with the looks/sound so Im trying to do as much research as I can before I spend like a 1000 on a new exhaust.
Im not an expert when it comes to tuning, far from it but looking at this video from Blockhead on YouTube the numbers on a 131 show that whilst its super close, the 2-2 produces more torque. He mentions another M8 131 setup on a RK thats also producing more torque with a 2-2 system.
Obviously this is on a Dyno and on the road/seat of the pants dyno might be a different story but it seems like its definitely not a clear cut difference.
Obviously thats just a dyno
Im not an expert when it comes to tuning, far from it but looking at this video from Blockhead on YouTube the numbers on a 131 show that whilst its super close, the 2-2 produces more torque. He mentions another M8 131 setup on a RK thats also producing more torque with a 2-2 system.
Obviously this is on a Dyno and on the road/seat of the pants dyno might be a different story but it seems like its definitely not a clear cut difference.
Obviously thats just a dyno
Cruiser
Joined: Jan 2019
Posts: 110
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From: Bratislava
All Harley-Davidson models are equipped with 2-1-2 headers which are not as bad but have restrictive mufflers.
V&H Short Shots true duals 2-2
TBR 2-1
The real difference is using Anti-Reversion chambers in the exhaust! I do not have a good dyno comparison between 2-1-2/2-2/2-1, but here is something:
Thrashin Supply 2-2
Thrashin Supply 2-1
V&H Short Shots true duals 2-2
The real difference is using Anti-Reversion chambers in the exhaust! I do not have a good dyno comparison between 2-1-2/2-2/2-1, but here is something:
Thrashin Supply 2-2
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Fuel moto puts a lot of time into question like this and a long track record. They sponsor threads on this site. Talk with them.
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Thread Starter
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Tourer
Joined: Aug 2016
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From: London, England
Thanks guys, thats really helpful.
That 2-2 pipe on the Thrashin Low Rider looks amazing, no idea what pipe it actually is though! Hopefully they release it for sale of its one of theirs!
That 2-2 pipe on the Thrashin Low Rider looks amazing, no idea what pipe it actually is though! Hopefully they release it for sale of its one of theirs!
