exhaust popping/flames
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This is a discussion on exhaust popping/flames within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; just a few questions that ive been pondering over first off, what mod is sending flames out some wrx exhaust ...

  1. #1
    Registered User WRXcruiser's Avatar
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    exhaust popping/flames

    just a few questions that ive been pondering over
    first off, what mod is sending flames out some wrx exhaust pipes when they step on it? i have been told that blue flames are inside my exhaust when i step on it, but ive only ever seen orange flames coming out of other wrx's when watching videos of them racing on the internet. i dont know if its true that there are blue flames in my exhaust, but thats what my girlfriend said when she followed me once.


    secondly, what might be causing a popping sound coming out my exhaust that usually occurs when im downshifting and sometimes between gears? (my exhaust set up is a perrin tbe with up and dp)


    anyways, sorry if these are stupid questions but at least if i get them answered i can stop thinking about them all the damn time.

    cheers,
    Laura
    2005 WRX Wagon stg 1 - 3/12 to present
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  3. #2
    Registered User WRXcruiser's Avatar
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    so ive got my answers now, so i dont need anyone to waste their time answering this post. in fact, this post can get deleted if a mod stops in
    2005 WRX Wagon stg 1 - 3/12 to present
    1996 BMW 328is coupe - 5/11 to present

    02 WRX wagon stg 2 - history

    WTB: Cobb Accessport ap-sub-001 for 2005 WRX

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    Out of curiosity, what was it?

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    Registered User WRXcruiser's Avatar
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    from what i gathered it is simply just afterfire causing the popping when i decel and as for the other question, i think it has a lot to do with more stages that i probably wont get to anyways
    2005 WRX Wagon stg 1 - 3/12 to present
    1996 BMW 328is coupe - 5/11 to present

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  6. #5
    Registered User Pavia's Avatar
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    DFCO: It's due to fuel cutoff on decel.

    You can tune most of it out.

    It's harmless, but some consider it a sign of the wrong exhaust setup for the car. Or an exhaust leak.

    If you turn off DFCO, gas mileage will go down. But you are just about guaranteed you'll get no popping.

    As you already learned, it's not that big of a deal...
    06 GTO M6 Quicksilver, SLP 455 Bobcat, LS7 Clutch w/ SS line (RPM tune:373rwhp/373rwtq)
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  7. #6
    Registered User SpeedWrx's Avatar
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    Do you have a blow-off valve?

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    Registered User WRXcruiser's Avatar
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    no way, i hate bov's
    2005 WRX Wagon stg 1 - 3/12 to present
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  9. #8
    Registered User powder's Avatar
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    flames are jdm.
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    Registered User rr1911's Avatar
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    r u catless ?
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    Registered User bboynems's Avatar
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    my exhaust pops like 3 or 4 times rapidly when im goin from low rpms to high rpms in second ne ideas of what that may be ?? newb question

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    Registered User orvtech's Avatar
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    I have an 07 STI with HKS catback and i want th3 flamez!!! will they come with a DP + cobb AP ?




    note: sorry i got possessed by a ricer ghost.

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    Registered User blahblah's Avatar
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    i get tons of pops if i tap the gas while decelerating.
    282 AWHP...267 lb-ft torque.
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    Registered User Wrx BriT's Avatar
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    Quote Originally Posted by orvtech View Post
    I have an 07 STI with HKS catback and i want th3 flamez!!! will they come with a DP + cobb AP ?

    note: sorry i got possessed by a ricer ghost.
    You want M4d JdM Fir3Ballz??
    You probly will get them as I did when I was useing an off the shelf tune. I also have a adjustable BOV so for normal driving I keep it in recirc. mode. When I have ricer urges I change it to full atmospheric and get huge flames. Best of both worlds I guess.

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    Registered User Micah's Avatar
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    Quote Originally Posted by blahblah View Post
    i get tons of pops if i tap the gas while decelerating.
    Yeah, I get them too - or at least that's what lots of people are telling me. I never see em.
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  16. #15
    Registered User rr1911's Avatar
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    Quote Originally Posted by orvtech View Post
    I have an 07 STI with HKS catback and i want th3 flamez!!! will they come with a DP + cobb AP ?




    note: sorry i got possessed by a ricer ghost.
    go catless with a bov and you will get the flames
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