Stumble after up pipe and silencer mod.
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This is a discussion on Stumble after up pipe and silencer mod. within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; I have a stumble that starts at 4000 rpms. Under heavy acceleration. I did the catless up pipe and silencer ...

  1. #1
    Registered User HOTSUBI's Avatar
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    Stumble after up pipe and silencer mod.

    I have a stumble that starts at 4000 rpms. Under heavy acceleration. I did the catless up pipe and silencer mod. It has no check engine light or anything else. Car is otherwise stock. I did add a extra ground wire from the batt to the intake..
    04 WRX Wagon. 18's, Catless uppipe, silencer mod..
    67 Cuda 493" big spinny thingy
    63 Savoy 413" 4 speed..
    99 dodge ram CTD modded.
    08 M109R2
    08 Vegas Low

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  3. #2
    Subaru Newb MainFrame's Avatar
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    How many miles have you put on the car since the install? It takes about 100 miles for the ECU to adjust and figure out what's going on.

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    Registered User HOTSUBI's Avatar
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    6 miles. Ok I guess I will drive it some more and check back later with results.. lol Thanks for the input.. also I didnt notice much of a noise difference with the silencer mod??
    04 WRX Wagon. 18's, Catless uppipe, silencer mod..
    67 Cuda 493" big spinny thingy
    63 Savoy 413" 4 speed..
    99 dodge ram CTD modded.
    08 M109R2
    08 Vegas Low

  5. #4
    Registered User HOTSUBI's Avatar
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    So I gotta wait for the fun to kick in!! lol
    04 WRX Wagon. 18's, Catless uppipe, silencer mod..
    67 Cuda 493" big spinny thingy
    63 Savoy 413" 4 speed..
    99 dodge ram CTD modded.
    08 M109R2
    08 Vegas Low

  6. #5
    Subaru Newb MainFrame's Avatar
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    yeah.. drive it normal for a little while, then get back to us. Unless you have a leak somewhere it should be fine. An exhaust leak should be audible, intake leak might be harder to find.

  7. #6
    Registered User HOTSUBI's Avatar
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    Ya it sounds good. No exhaust leaks that I can tell. Purrs like a kitten..
    04 WRX Wagon. 18's, Catless uppipe, silencer mod..
    67 Cuda 493" big spinny thingy
    63 Savoy 413" 4 speed..
    99 dodge ram CTD modded.
    08 M109R2
    08 Vegas Low

  8. #7
    Registered User HOTSUBI's Avatar
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    just not the tiger I was hoping for.. lol
    04 WRX Wagon. 18's, Catless uppipe, silencer mod..
    67 Cuda 493" big spinny thingy
    63 Savoy 413" 4 speed..
    99 dodge ram CTD modded.
    08 M109R2
    08 Vegas Low

  9. #8
    Subaru Newb MainFrame's Avatar
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    You need a tune, that's where all the power comes from.. and if you're just looking for noise the muffler has more to do with that than anything.

  10. #9
    Registered User HOTSUBI's Avatar
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    Ya full turbo back and tuner hopefully soon but not right now. Just want to make sure its reliable. Didnt want that catted uppipe to kill the spinny thing, and the silencer sounded like a good easy free mod.
    04 WRX Wagon. 18's, Catless uppipe, silencer mod..
    67 Cuda 493" big spinny thingy
    63 Savoy 413" 4 speed..
    99 dodge ram CTD modded.
    08 M109R2
    08 Vegas Low

  11. #10
    Registered User HOTSUBI's Avatar
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    Any other thoughts on this issue?
    04 WRX Wagon. 18's, Catless uppipe, silencer mod..
    67 Cuda 493" big spinny thingy
    63 Savoy 413" 4 speed..
    99 dodge ram CTD modded.
    08 M109R2
    08 Vegas Low

  12. #11
    Supporting Member yamaha_rider619's Avatar
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    Did you disconnect your battery, drain the power and reconnect it after the install?
    Josh
    2003 Subaru Wrx Vf39'd
    Bugeye mafia #300

  13. #12
    Registered User HOTSUBI's Avatar
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    I disconnected it for a hour.. Is there something else?
    04 WRX Wagon. 18's, Catless uppipe, silencer mod..
    67 Cuda 493" big spinny thingy
    63 Savoy 413" 4 speed..
    99 dodge ram CTD modded.
    08 M109R2
    08 Vegas Low

  14. #13
    Supporting Member yamaha_rider619's Avatar
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    Are you having any other symptoms?
    Josh
    2003 Subaru Wrx Vf39'd
    Bugeye mafia #300

  15. #14
    Registered User HOTSUBI's Avatar
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    Nope just the stumble/hesitation. I did find the obd plug. Didnt even see the little pocket for it.. LOL no codes..
    04 WRX Wagon. 18's, Catless uppipe, silencer mod..
    67 Cuda 493" big spinny thingy
    63 Savoy 413" 4 speed..
    99 dodge ram CTD modded.
    08 M109R2
    08 Vegas Low

  16. #15
    Registered User HOTSUBI's Avatar
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    Rochester, Wa
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    how do you drain the power?
    04 WRX Wagon. 18's, Catless uppipe, silencer mod..
    67 Cuda 493" big spinny thingy
    63 Savoy 413" 4 speed..
    99 dodge ram CTD modded.
    08 M109R2
    08 Vegas Low

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