Modifications - Performance Discuss aftermarket and DIY performance modifications

exhaust

Old 09-20-2008, 06:25 AM
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exhaust

ok guys i need some help. new the forum but not to bikes. except for this superhawk i just bought. i've been searching the net to try and find a 2into1 exhaust system for it. i really dont care for the 2into2 system thats on it, but i cant find one. does anyone now of any and can point me in the right direction.
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Old 09-20-2008, 07:53 AM
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im surprised that you couldnt find anything on the forum. im not sure if anyone makes a 2to1 exhaust that already fits on our bike. i could be wrong though, my knowledge is nothing compared to a lot of guys on here. i have seen some custom 2to1 exhaust on here before though.
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Old 09-20-2008, 08:50 AM
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Originally Posted by Death Cattle View Post
im surprised that you couldnt find anything on the forum. im not sure if anyone makes a 2to1 exhaust that already fits on our bike. i could be wrong though, my knowledge is nothing compared to a lot of guys on here. i have seen some custom 2to1 exhaust on here before though.
well i know a guy over on the shadowriders forum that makes custom exhaust for the shadows. i know he could make one for this bike, then all i would need is a slip on exhaust. how well does this bike perform with a 2 into 1.
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Old 09-20-2008, 10:48 AM
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im pretty sure you just have to re jet it. i had a 2 into 1 then my bike backfired and blew out a crack in my carbon fiber can. ran great before that though.


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Old 09-20-2008, 12:00 PM
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Originally Posted by Woodytick View Post
i've been searching the net to try and find a 2into1 exhaust system for it. i really dont care for the 2into2 system thats on it, but i cant find one. does anyone now of any and can point me in the right direction.
Hi Woody,
I would think you could just use the existing header, it's a 2-1-2. You would just need to cut and weld a patch for whatever side you wanted to block off. If you wanted the can on the right side though, there is a restrictor in that pipe that would need to be ground out. The blockage is near where the red line is in the photo.
Attached Thumbnails exhaust-eebe_1.jpg  
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Old 09-20-2008, 02:42 PM
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Nobody makes a 2-1 for the Superhawk... So your only option is custom...

Several members have attempted it and you certainly need a re-jet to make it work... The reason being that you loose midrange grunt and gain top-end...
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Old 09-20-2008, 05:21 PM
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definitely need to re-jet to get it to run right as the others have said. it would be cool too, cause you can say you have exhaust that no one else has. haha.
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Old 09-20-2008, 06:34 PM
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a few people on here have a single can... i believe hawkrider does and someone else.
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Old 09-20-2008, 08:07 PM
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hey thanks for all the info guys. i'll probably do what greg said, then rejet and put a leo vinci slip on, on it. gotta do something though, i dont like the looks of the duals. its the only thing about the bike i dont like.
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Old 10-16-2008, 02:20 PM
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how does it sound with one can
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Old 10-16-2008, 04:43 PM
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It's cheaper and easier to drop $500 bucks on a decent set of high mounts. You want to ride your bike or tinker with it for the next two years while you try to work out the tuning details? You want it to look like an I4 go buy one. In the long run it would be cheaper. You think your buddies on the CBR's run away from you now - wait until you have the performance problems associated with this mod. Just my .o2
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Old 10-16-2008, 04:53 PM
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Originally Posted by nuhawk View Post
It's cheaper and easier to drop $500 bucks on a decent set of high mounts. You want to ride your bike or tinker with it for the next two years while you try to work out the tuning details? You want it to look like an I4 go buy one. In the long run it would be cheaper. You think your buddies on the CBR's run away from you now - wait until you have the performance problems associated with this mod. Just my .o2

+1
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Old 10-19-2008, 07:17 AM
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I am running a 2-1 and love it. You gain in the low and mids while losing a bit on top. If your bike is set up with a Dynojet kit, it is virtually a straight bolt-on affair. I cut my header at the end of the 2-1 section (just before it re-splits to two pipes), cleaned it up with a dremel and fit the link pipe (am using a high mount Blue Flame can from a 98 Yamaha R1; it slid right on). I recommend the set-up, it pulls like gangbusters in the mid-range.
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Old 10-19-2008, 09:11 AM
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I have a single sided exhaust and love it. you dont see many like it and I had it tuned with no problems...

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Old 12-20-2008, 05:23 AM
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Originally Posted by nuhawk View Post
You want it to look like an I4 go buy one. In the long run it would be cheaper.
first of all, i own a I4 and the damn dual exhaust on the hawk is ugly as hell.

[/quote]You think your buddies on the CBR's run away from you now - wait until you have the performance problems associated with this mod.[/quote]

second, my buddies don't run away from me on my CBR since it is a wolf in sheeps clothing race bike. i run away from them.

third, find a good tuner and have it tuned right and you won't have any problems.

finally, thanks for your two cents.
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Old 12-20-2008, 08:51 AM
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If you look into the guys that have done the VFR singarm swaps, I believe most, if not all of them have a single exhaust. Any of them should be able to answer any questions you may have. Like epleeds above. Nice bike by the way.........
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Old 12-20-2008, 09:47 AM
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I love my 2-1 set-up. Before going the single can route, I did some research and found a few chaps on the UK Firestorm site who are quite knowledgeable about it. The consensus is that the 2-1 boosts lows and mids at the expense of a slight drop in top-end (verified on the dyno by some). Also, if your bike is stock it will need a re-jet but if you already have slip-ons and a DJ kit (properly calibrated), it is basically a bolt-on affair (as it was for me).
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Old 12-20-2008, 12:37 PM
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2-into-1 exhaust pipe pics

Hope this will help you get a better idea of how the exhaust pipe gets cut and welded. In picture 922, both headers are shown. The others show how the 2 pipes gets tied into 1 pipe as mentioned earlier by Gregw.
Attached Thumbnails exhaust-header_1922.jpg   exhaust-header_1923.jpg   exhaust-header_1924.jpg   exhaust-header_1925.jpg  
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Old 12-20-2008, 01:10 PM
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Yep, I cut my header in precisely the same place (at the end of the merge, just before they split again) I used a dremel to clean up the welds (to reduce turbulence and restriction, smooth out the airflfow) given that I had access to them. Hook up the link pipe there (2" diameter) and you're in business.

Last edited by mikstr; 12-20-2008 at 01:13 PM.
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Old 12-20-2008, 03:17 PM
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hmmmmm

You're the 2nd one here that I've read that's had a carbon can blow out.
I might have to rethink what I want.


Originally Posted by BlackHawk996 View Post
im pretty sure you just have to re jet it. i had a 2 into 1 then my bike backfired and blew out a crack in my carbon fiber can. ran great before that though.


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Old 12-20-2008, 04:09 PM
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Many people are of the opinion that V-twins and carbon cans do not mix, the twin's more powerful exhaust pulses apparently taking their toll on longevity...
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