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Thread: 034 HFC advice?

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    jakeA42T's Avatar
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    034 HFC advice?

    Was thinking of fitting a 034 HFC, needed a litte more info' if anyone has fitted one did you notice any difference in gains or sound?
    Audi A4 2.0T Fsi S Line Multitronic

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    The gains will be minimal as ideally you would require mapping to get the full benefits.

    As for sound, it should help release a little more noise.

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    Every little helps, Cheers?
    Audi A4 2.0T Fsi S Line Multitronic

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    There are gains with any hfc with out mapping but to get the best out of it you need a new fuel pump and map to match.
    Noise wise it will be very raspy it not a noise everyone likes !!

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    I'm assuming we are talking about the high flow cat? Its got to be quieter than a test pipe (De-cat) right? When i fitted my decat it was like another map the restriction is obviously high with the stock cat. Has anyone actually fitted a high flow cat to the b7? im interested too as it would make things easier come MOT time. I have a full 3" decat now with milltek and ko4 shoving out nearly 340ps so even if this dropped 10ps over the full decat its still gonna be a worthwhile mod for the cash and lack of hassle putting your cat back on every year?

    love to hear if anyone's fitted it?
    Audi DTM edition, Sprint Blue, MRC remap, milltek, RS4 RARB.

 

 

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