2 into 1 a better performing exhaust? - Star Motorcycle Forums: Star Raider, V-Max, V-Star, Road-Star Forum
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post #1 of 20 (permalink) Old 05-01-2010, 06:49 PM Thread Starter
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2 into 1 a better performing exhaust?

want to change my cobra slip ons on my 2003 v-star 1100 but cant decide on wich one...2 into 1 or a 2 into 2.....u guys know wich be a better performing exhaust ?.....have read that the 2 into 1 is
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post #2 of 20 (permalink) Old 05-01-2010, 09:20 PM
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2 into 1 or 2

Sledman,

I think 2 into 2 looks better but I understand 2 into 1 gives slightly better low end torque.

Dave
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post #3 of 20 (permalink) Old 05-01-2010, 09:26 PM
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It would be hard to tell which exhaust is better without doing a dyno run on each. But as rumor has it the 2into1 does give better performance. Of course I have the ShoGun 2into2 exhaust which still gives good preformance upgrades.

Doug

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post #4 of 20 (permalink) Old 05-02-2010, 12:33 PM
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With the new 2 into 2 pipes coming with "power ports" / "equalizers" or crossover tubes (kinda like the X-pipe they use in Nascar) the difference is negligible. So if you're shopping just look for those type pipes and then you can just shop looks or sound. At least it takes one of the variables off the table.

Last edited by Fulltilt1; 05-02-2010 at 12:43 PM.
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post #5 of 20 (permalink) Old 05-02-2010, 10:05 PM Thread Starter
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i gues that tells u right there huh...if they designed a 2 into 2 to work like a 2 into 1 then the 2 into 1 gotta be a better performer
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post #6 of 20 (permalink) Old 05-03-2010, 11:39 AM
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I got cobra 2-1 HP exhaust on mine as well as a max air kit.

All i can say is the bike is a BEAST now. MUCH quicker than stock with WAY more mid range grunt.

Itwas a pita to get fueled right (still not 100% there gotta book a dyno). But the rewards in performance are asstounding.

The bike is a bit louder than i really wanted but its still not deffening and has a hell of a mean bark to it.
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post #7 of 20 (permalink) Old 05-03-2010, 02:03 PM
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Actually I guess it means they were a better performer... Now all things are equal.

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post #8 of 20 (permalink) Old 05-03-2010, 03:42 PM Thread Starter
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did the max air kitt come with jets for stock exhaust and full exhaust mod?....i thinking of going with HARD KROME 2 INTO 1 SIDEBURNER exhaust and the chubby air kit from SS custom cycle ....so u saying the jets they provide wil not tune the carbs?
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post #9 of 20 (permalink) Old 05-03-2010, 09:04 PM
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These tables are pretty accurate as to the jetting sizes and settings. The Chubby kit uses RU-600 K&N filters and are larger /better flow than the Max Air. Thats the POD filter used in these tables. These are Mikuni size jets.

http://www.sloneservices.com/SilverB...tting-Settings

If you happen to get Dynajet jets here is a conversion chart to match them to Mikuni. Most will tell you Mikuni are the ones to get, flow like they're meant to by manufacturer.

http://roadstarclinic.com/content/view/61/96/

One other thing if you decide to put your kit together yourself it can be done for about $100. If you do that you'd have to dig for this tidbit... You have to switch the rubber boots from carb to air filter front to back to get the required clearance. When you remove them you'll see they are different heights.

If you tell Shane at S&S what you are doing he'll set it up right (the kit that is)

Last edited by Fulltilt1; 05-04-2010 at 11:06 AM.
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post #10 of 20 (permalink) Old 05-04-2010, 04:49 PM
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Quote:
Originally Posted by sledman View Post
did the max air kitt come with jets for stock exhaust and full exhaust mod?....i thinking of going with HARD KROME 2 INTO 1 SIDEBURNER exhaust and the chubby air kit from SS custom cycle ....so u saying the jets they provide wil not tune the carbs?
When installed my Maxair Predator kit, I believe it came with the jets and any other necessary parts and instructions to do the job.

Doug

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