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Idaho450

Fmf Q4

7 posts in this topic

I'm looking at getting a Q4 for my '07 WR450 and running the stock header. I've already done the free mods and JD kit. Will I see a power difference over the stock muffler?

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I have the the stock header with all the mods on my 2007 WR450. I put a Q4 on it and noticed a gain in power over the stock silencer. The stock silencer is really restrictive. I really like the Q4 because it made a noticable difference in power and you'll never have to worry about being over the decibel limit anywhere.

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The only performance tip I've heard is the GYTR tip. My bike with the Q4 is definetly more quiet than the GYTR tip. I run a 168 main jet at an altitude of 4000ft and less. Have you done the grey wire and throttle stop?

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I've done the grey wire, throttle stop, AIS, etc... I put in the JD Kit also.

Do you happen to know which pilot you run?

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...I'll have to ask my wife where the receipt is for it. I forgot to write it down. I'll check back when she get's off work tomorrow.

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