Thrush mod questions. - Victory Forums - Victory Motorcycle Forum
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post #1 of 11 (permalink) Old 07-06-2014, 02:37 PM Thread Starter
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Default Thrush mod questions.

Just took my mufflers off in preparation for the thrush mod and came across a couple of things that raised questions.

First, this bike has Stage 1 exhaust on it. Is there anything different I need to do for the thrush mod using these stage 1 mufflers?

Second, after pulling the mufflers off I noticed some kind of filter looking thing in the right hand pipes, but not the left. Anyone know what this is and whether I should remove it or not? Will it impact the sound of the thrush mod? See attached pic.

Thanks!
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2013 Suede Nuclear Sunset Cross Country
Vicbaggers Tarzanz handlebars
Thrush modded exhaust
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post #2 of 11 (permalink) Old 07-06-2014, 02:43 PM
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That's the cats. Some remove them some don't. Plenty here have done the mod so I will let them chime in on what's best.

2011 vegas 8ball PCV, swept pipes rpw modified baffles, llyodz vm1-dr cam, ats +4, 1/4 throttle, ud pulley and ness intake.
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post #3 of 11 (permalink) Old 07-06-2014, 02:45 PM
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Personally I would leave the catalysts alone.

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post #4 of 11 (permalink) Old 07-06-2014, 06:02 PM
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if it were mine id yank them, did it to mine, would do it again.


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post #5 of 11 (permalink) Old 07-06-2014, 06:04 PM
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there is one on your cross over I do believe

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post #6 of 11 (permalink) Old 07-06-2014, 06:48 PM
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Default Thrush mod questions.

Johnny is right. There is another cat in the cross under pipe right after the oil filter.

I removed my cats. Would I do it again? Not sure. Certainly don't have to, although it did relieve some of the heat.


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post #7 of 11 (permalink) Old 07-06-2014, 07:28 PM
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I removed mine. It's hot here, so any heat relief I can get I'm doing it.

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post #8 of 11 (permalink) Old 07-06-2014, 08:00 PM
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Default Gov says no

Gov. says leave alone. We all do what the goverment tells us right, big brother knows best correct!!!????? I have seen them fall out when the muffler is removed. Seen it on cars years ago, now it happens to most vehicles. Think of flow, do you feel good when your personal exhaust system is backed up, or do you feel better with more energy when the old exhaust is regular and flows out good? When you keep a system plugged up it does seem to heat up and not run as good weather it is animal or mechanical. A cork in a bottle etc. keeps a system plugged up, uncork the bottle and the fluid comes out much better.

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post #9 of 11 (permalink) Old 07-06-2014, 08:57 PM
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Quote:
Originally Posted by Speedblue View Post
Gov. says leave alone. We all do what the goverment tells us right, big brother knows best correct!!!????? I have seen them fall out when the muffler is removed. Seen it on cars years ago, now it happens to most vehicles. Think of flow, do you feel good when your personal exhaust system is backed up, or do you feel better with more energy when the old exhaust is regular and flows out good? When you keep a system plugged up it does seem to heat up and not run as good weather it is animal or mechanical. A cork in a bottle etc. keeps a system plugged up, uncork the bottle and the fluid comes out much better.

That's only half of the equation. If the system isn't tuned for a freer-flowing exhaust, you can actually degrade performance.


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2013 XCT, Boardwalk Blue w/ Vicwrapz
S&S Cams, Lloydz filter & ATS +5, PCV, UD pulley, Alto Red Eagle clutch plates
Madstad Windshield, 5000K HID, TriOvals, Memphis Shields wings, Ultimate seat
JVC KD-X35MDT, PBR300X4, Polk DB6502, DaytonAudio ND140-4 rear
HyperLites, LED driving lights, Lloydz dyno 105+H and 117+T
Arlen Ness blinkers, KlockWerks KlipHanger bars, Avon grips

Spectro Golden 4 20w40 for Victory L.SG424, Kury Sabertooth LEDs
THE FEW, THE PROUD, THE OBSCURE. TTWFO2
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post #10 of 11 (permalink) Old 07-06-2014, 09:31 PM
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Default Things can go toooooooooo lean.

Correct once one item is changed it changes other things, so just like on a carburated system things need to be fattened or richened up. Or on carbed sytems you can say the carbs need or needed to be rejetted. Reason they sell some many fuel tuners, helps reset the amount of fuel the engine gets.

Buckeye, Arizona(USA) 2011 Victory Cross Roads, Black police bag guards, black engine guards, black handle bars, Triumph Tiger mirrors, Triumph hand grips, set speedo/tach back 5" , adjustable timing wheel, Lloyzz Fuel Programmer III & air filter. Modified exhaust, made stock into 2 into 1. MRA windshield, Rotated front fender forward,relocated ignition switch, Bad Ace Fuel Tank Risers, Fat front tire.
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