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whats the diameter of a standard s3 maf?

s3dave Mar 26, 2010

  1. s3dave

    s3dave TFSI Hybrid Supporter

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    as above as i seem to be only getting 189g on the liquid guage but boosts to 24psi on a stage 2????
    something is wrong somewhere ,,it goes like stink so im guessing i have a bigger maf and the values are out?
    :think:
     
  2. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow... Staff Member Moderator Audi S3

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    If you are using the std air box then you have a std S3 MAF... they are nearly 3"...

    If you are only getting 189 g/s then I would imagine the MAF sensor is the culprit...

    <tuffty/>
     
  3. s3dave

    s3dave TFSI Hybrid Supporter

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    cheers, im using a bmc , would you still see 24psi though?
     
  4. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow... Staff Member Moderator Audi S3

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    Boost and airflow aren't the same....

    Can still make boost and have poor airflow.... take tyres... no airflow, 32psi... :)

    Do you know if the MAF has been changed and when that was?

    <tuffty/>
     
  5. s3dave

    s3dave TFSI Hybrid Supporter

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    i dont know, how old it is mate, i thought if it was boosting it has to be drawing air in at a decent rate, as like i say it goes fine...
     
  6. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow... Staff Member Moderator Audi S3

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    Check for fault codes then do some third gear runs (using the MAF gauge on liquid) to see what max you get airflow wise... if its not around 200g/s or more then the MAF sensor may be the issue but I have seen engines being strangled by BMC type air boxes... the OEM airbox will flow 300bhp with no probs...

    <tuffty/>
     
  7. s3dave

    s3dave TFSI Hybrid Supporter

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    no fault codes, will try 3rd gear runs cheers, the car is supposed to be running at 298bhp with the hybrid ko4
     
  8. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow... Staff Member Moderator Audi S3

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    298bhp is a little 'happy' tbh.... most I have seen is 220g/s through a hybrid before now... that wasn't putting out anything near the power you suggest...

    <tuffty/>
     
  9. s3dave

    s3dave TFSI Hybrid Supporter

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    :) could be.... thats a print out from apr after 4k of work :asskicking: with reciepts......luckily that was from previous owner last year
     

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