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Does this class as a misfire?

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Old 17 June 2003, 05:21 PM
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Sc00by_Jim
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As i take my foot off the accelerator, the revs drop and pops are heard from the exhaust, occasionally louder pops can be heard also.

Sounds fine during acceleration though, its a MY96 WRX, SS decat centre and BB

Cheers

J
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Old 17 June 2003, 06:19 PM
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MorayMackenzie
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That sounds like overrun pops.
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Old 17 June 2003, 07:24 PM
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jpmason33
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Excuse the thickness....overrun?
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Old 17 June 2003, 08:22 PM
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7 Foot
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Basically, stop flapping man!! They are perfectly normal and a welcome side effect of a decent exhaust.

I think it is just unburnt fuel igniting in the exhaust. If you are really lucky you may even get a flame out of the back.

Now that would scare you.
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Old 17 June 2003, 08:32 PM
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jpmason33
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Cheers
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Old 18 June 2003, 03:23 PM
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pugoetru
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flames yes give me some of those !!
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Old 18 June 2003, 05:37 PM
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7 Foot
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With a full de-cat and a VTA dump valve you can get flames. Not always. I never did with that set up but the bloke I sold my dump valve to did.
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Old 18 June 2003, 05:53 PM
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Stealth
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Dude, this is what over run does

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