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  1. #1
    AlexGSi2000's Avatar
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    2.5TDi Dumping Boost / Compressor Surge

    Just wondering if anyone could help me out on this one, as the car seems to be dumping boost under full load.

    I was having a spirited drive around the country roads last night, under full load lower down the revs (around 2,500-3000rpm) the car was dumping boost and giving the sound of compressor surge, then picking back up again.

    The car has a remap, full stainless exhaust and had the EGR blanked - Is it likely to be the N75?

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  3. #2
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    mine used to do this mate but... never made a difference to performance? can you tell on yours?

    i had an open filter ( cone) so you could realy hear it

  4. #3
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    Either a crap map or the air intake pipe is collapsing- had the same issue on fjtwelve's remapped audi a6. Thought it was fuel starvation at first. Any fault codes ?
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  5. #4
    AlexGSi2000's Avatar
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    Intake pipe collapsing! - nice... I haven't spotted any aftermarket TIP's for the 2.5, guessing I will just have to live with it?

    No fault codes whatsoever!

  6. #5
    swarcup's Avatar
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    can i ask what happens when you say dumping boost, just in case mine does this and im unaware
    2.5tdi Avant Q S 180 - 19" RS6 reps - chrome mirrors - ambient light package - cruise and dis retrofit - chrome side repeaters - front sline lowr conversion with cupra r splitter - rear lower valance with twin cut outs and exhaust tips - rs4 rear antiroll bar - puddle and footwell lights - sline door blades - fully colour coded - b8 autodimming mirror on custom window adapter - geuine aero wiper upgrade - genuine heated mirror upgrade

  7. #6
    AlexGSi2000's Avatar
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    Quote Originally Posted by swarcup View Post
    can i ask what happens when you say dumping boost, just in case mine does this and im unaware
    Sorry, my own terminology there - the turbo stops providing boost pressure and then re-builds.

    This is the sound im getting, but under full acceleration - SR20DET Compressor Surge - YouTube

 

 

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