cat problems 207 gti
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  1. #1
    Tadpole mushy's Avatar
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    Default cat problems 207 gti

    has anyone had problems with hi flow cars after tune? my car loses power after 4800rpm...

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  2. #2
    Fellow Frogger!
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    That doesn't make sense? At a total guess without further information it sounds like the car is protecting itself from getting dangerously lean. Maybe a duff sensor somewhere or a just a bad tune?

  3. #3
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    I presume this would cause an error code or worse, but are both sensors pre and post cat defo reconnected? Wires not damaged by fitting cat?


    2003 PEUGEOT 206 GTi

  4. #4
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    If you've had it tuned and loosing power after 4.8k i'd be taking it back to tuner to investigate.
    there are too many variables. Could be bad tune, could be loose vac hose, could be a sensor, HPFP....
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  5. #5
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    I just assumed the OP meant the problem happened after a new high flow cat was fitted.


    2003 PEUGEOT 206 GTi

  6. #6
    Tadpole mushy's Avatar
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    getting cat change tuner figured that cat too big to much air flow has 100cpi cat getting 200cpi fitted and then retune

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  7. #7
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    Too much airflow? Im going out on a limb here and say if your actually getting it tuned correctly you would be able to run a decat and have the car tuned without the use of the o2 sensors. Alot of guys around the world run a decat without issue and tune it that way. If your intention is to run a cat then get some o2 sensor spacers and that will be enough.

    Are you getting it tuned via etuners or just the local performance shop?
    How are they tuning it?
    PM Me for all New Genuine Spare Parts & Accessories.
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