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Exhaust getting cherry red

This is a discussion on Exhaust getting cherry red within the General RZR Discussion forums, part of the General RZR category; I have a 2011 Rzr S and noticed the exhaust getting so hot that it glows cherry red. To try to fix this problem I ...


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Old June 24th, 2012, 07:07 PM   #1
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Exhaust getting cherry red

I have a 2011 Rzr S and noticed the exhaust getting so hot that it glows cherry red. To try to fix this problem I changed the stock exhaust to HMF exhaust and added a Dragon fire G3 fuel controller. I have adjusted the controller every setting possible, the engine temp is normal, but after cruising around for about 10 mins. its cherry red. It doesn't get red at an idle and will cool back down. After driving around for about an hour While trying to make adjustments to the fuel controller you can kill it and maybe 10 mins later restart it and it acts like its flooded.

Any help or information to fix this will be greatly appreciated!!
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Old June 24th, 2012, 07:32 PM   #2
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Re: Exhaust getting cherry red

welcome to the forum.

if you think it is running too lean you need to test the AFR.
without an AFR sensor you are kind of in the dark.
do you have any ATV/UTV performance shops in your area that can tune it?
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Old June 24th, 2012, 07:42 PM   #3
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Re: Exhaust getting cherry red

You're either too lean, or your ignition timing is waaaaaaaay retarded. Could also be the exhaust valves hanging open slightly, but, if so, it'd be hard to start. I don't think that's it. Time to go to the dealer and get it checked-out. My two-bits.............

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Old June 24th, 2012, 07:44 PM   #4
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Re: Exhaust getting cherry red

No we dont have a performance shop only the dealer thanks for the input
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Old June 24th, 2012, 08:20 PM   #5
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Re: Exhaust getting cherry red

Quote: Originally Posted by Oz1314 View Post
No we dont have a performance shop only the dealer thanks for the input
Well, bummer! If you have a regular service shop, any service shop, that has an oxygen tail-pipe probe (as used for checking emissions), that might help give some indication if it's mixture or timing..............

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