Volks AutosAH Fabrications
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  1. #1

    Join Date
    Nov 2009
    North Devon

    command vs actual boost

    Right I have a 2001 S3 amk, apparently mapped. Iv had a few small problems, It seems to not have the punch it did. So found some leaks under the inlet and fixed all oneway valves etc. Also came up with pressure drop between turbo etc fault, so iv fitted a forge 007p and that fault hasnt reappeared

    But still feels slow, still not logging anything higher than 190 on maf. I havent had the chance to take it on a long run but I dont think its doing very well on fuel either.

    heres a graph showing requested (blue) vs actual boost (red). It shows several sprints in 3rd and 4th under almost maximum load each time.

    The requested boost seems inbetween the 'usual' mapped s3 and standard, i also think it looks really laggy? going to test the intercooler pipework tomorrow, but surely this wouldnt count towards low maf reading. Any thoughts on this is much appreciated. A few things have been suggested, N75 & maf etc. Cheers guys

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  3. #2
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    190G/ps on the MAF is about 240/45BHP, which is quite a way off what it should be for a stage one remap.

    Something's not right mate, I can't say past that though haha!
    Last edited by 16Klappe; 24th February 2010 at 23:32.
    I quite often say I'm going to do things.

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