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Exhaust Backfire

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Old Mar 21, 2005 | 09:55 PM
  #1  
Cytrax's Avatar
Cytrax
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Default Exhaust Backfire

I have a 94 impreza wrx import and when I am comming to a stop after just driving at normal speeds the engine backfires and obvioustly gives off a huge bang or two. I have had the exhaust inspected and there are no holes but the sound is still there,

Could this be something to do with the fuel not getting burned off properly, I used to have the same issue when I used to race motocross and the mixtures and ratio was not tuned correctly,

Any feedback would be apreciated
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Old Mar 22, 2005 | 10:40 AM
  #2  
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Whats the problem, it sounds perfect You just need to makesure there are flames to accompany the bangs
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Old Mar 22, 2005 | 12:41 PM
  #3  
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From: Founder of surreyscoobies.co.uk
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As above perfect!! this is normal btw
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Old Mar 22, 2005 | 01:30 PM
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From: Bath, UK
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Mine used to do that..until I took the VTA dump valve off and returned to the OE one.

Lots of fuel sloshing around may be good for flames/pops/bangs but heard about cases of bore wash which isn't good.
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Old Mar 22, 2005 | 09:52 PM
  #5  
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Okay thanks I just wanted to make sure that it was normall, I am going to start scaring grannies with it now
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Old Mar 22, 2005 | 10:59 PM
  #6  
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From: Braintree - 321BHP, 285Lbft-Perfect Standard' Ish STi Ver. III
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mate, that is what you wanna hear on a scooby!!, my STi III does exatcly same, H&S full decat etc...minute it gets hot my version 3 cant stop!
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Old Mar 22, 2005 | 11:20 PM
  #7  
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From: Herts
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MY 98 pops away when it's hot the misses hates it, but it's not her car so who cares.
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Old Mar 23, 2005 | 04:30 PM
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From: berkshire
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i have a full h&s decat and dumpvalve. i love the way it pops and bangs, gives that extra 'rally' feeling
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