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  1. #1
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    183 g/s on a S3 BAM

    Okey so I got myself a copy of vag-com today and was really excited to go out and try it out. After a few runs on 3 and 4 gear I only reached 183 g/s in airflow. Previous owner had the car remaped so it's stage 1. And I got the receipt so I know its true. From what I understand I should be able to see 200+ g/s? Where do I begin looking for errors? I checked the car for errors with vag-com and I found that N492 valve had some mechanical problems. I cleared the code and it did't come back. So do I have a boost leak somewhere? or what should I be looking for?

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  3. #2
    Chugger

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    boost leak wont affect the reading. Did you take it right up to the limiter?

    Mine also has a map but only reaches 190g/s. Must be a poor map, although i havent got reciepts. Do you know where it was done?

    Otherwise do you find the car drives ok? no hesitation or dodgy idle?
    57 A3 2.0 TDI Sportback (140)

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    Yes I took it all the way up to red area :P however my idle is quite dodgy. Did read a thread here that suggested that I needed to clean my TB. So I will do that as soon as I find time for it. Had a quick look inside my MAF today and it did not look dirty.

    I do actually know where it was done so I may actually call them and ask what they expect from the car after their map.

    Sometimes I feel that the car would pull a little bit harder but maybe that is just me.

  5. #4
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    Their description of the map says that I would have 272 hp @ 5700rpm and 320nm @ 3200rpm.

    In my eyes this looks quite promising but I think I will have a word with them anyway.

  6. #5
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    haha, comedy. You'll never see 272bhp from a stage 1 map, it just won't ever happen.

    Still, 183 g/s is POOR, that must feel pretty slow
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  7. #6
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    No it looks like they are over their head with this. I mean for me it still feels quick, my last car was a 1.6 MKIV golf

    But the question is; is there something that could be broken and causing those low readings?

  8. #7
    Essflee's Avatar
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    Companies always quote higher outputs than you'll get unfortunately,

    However 183g/s is low even for a standard generic map,

    Your barely seeing 230bhp

    If it was me I'd be tempted to get a new 'genuine' maf if you know it hasn't been changed for some time...
    revo'd

  9. #8
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    Mine only sees 190 on a stage 1. What air filter you got? and does it need a clean?? Or it could just be a bad map. Where was it done?
    2003 Dolphin Grey S3, with a few mods....

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    I logged it with standard airfilter as far as I know. However I had a AEM Dryflow cone filter laying around so I did put it on. Thing I will have another go at the logging part now after changing. But I dont know, should it make such a big difference?

    The company is called TuningChip.se based in stockholm/sweden.

    A new MAF sounds expensive?

  11. #10
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    Tuninchip offered me help if I took my car over to their garage. Atleast they liked to look at it.

  12. #11
    <tuffty/>'s Avatar
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    Stage 1 mapped S3 should see around 200g/s... could well be a poorly MAF.

    <tuffty/>
    Silver 2001 AMK S3. Silver alcantara interior... now with added powarrrrrrrr, torques. VAGCOM + KII-USB. >> My build thread...

  13. #12
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    When mine was first mapped to stage 1 (CC) it showed 212g/s.. However after a while it dropped down to 190g/s.
    Changed the MAF and now its back where it should be.

  14. #13
    Chugger

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    on the other hand, I changed my maf and the result was the same.
    57 A3 2.0 TDI Sportback (140)

  15. #14
    www.badger5.co.uk

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    tired maf is most likely..

    thats a low figure as you know for a remapped S3
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  16. #15
    Works 60% the time, Everytime.

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    Mine also floats around 190g/s. Think its just a tired maf.

    2003 Audi S3 + Go faster bits

  17. #16
    sportquattro's Avatar
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    Tired MAF; mine was reading 175g/s now 205g/s with a new MAF
    1999 Audi S3 Superchips remap, Forge 007p, Phatnoise, Black Diamond Discs & DS2500 pads, N249 Deleted, Badger 5 TIP, Poly dogbone bush, Bilstein B8's and Eibach Springs.

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  18. #17
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    Ok might be the MAF then. Will have a chat with audi and see what huge amount of money the like for a new one.

    And then I also like to know how tuningchip could get 272 bhp out of a S3 on stage 1. Most likely not But would be fun to hear what they are saying about it.

  19. #18
    fingermouse's Avatar
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    change it yorself think they are Ł80 exchange and a doddle to fit
    red to red black to black blue to bits

  20. #19
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    A new MAF from audi are; Ł297 and half if you do the exchange. quite expensive I say

  21. #20
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    Quote Originally Posted by Andy´ View Post
    A new MAF from audi are; Ł297 and half if you do the exchange. quite expensive I say
    A necessary evil matey I'm afraid. It's a consumable part at the end of the day
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    well well I will build my own out of an Coke can.

    The next question is; will the car be quicker or is it only the readings which will be correct?

  23. #22
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    Quote Originally Posted by Andy´ View Post
    well well I will build my own out of an Coke can.

    The next question is; will the car be quicker or is it only the readings which will be correct?
    If the MAF is reading wrong, it plays a big part in fuelling.....
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  24. #23
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    kind of what I was thinking, I am still new at this so feel free to think of me as a dork :D

  25. #24
    Welly's Avatar
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    Quote Originally Posted by Andy´ View Post
    kind of what I was thinking, I am still new at this so feel free to think of me as a dork :D
    LOL, it's OK mate, fair question.
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  26. #25
    <tuffty/>'s Avatar
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    Quote Originally Posted by Andy´ View Post
    A new MAF from audi are; Ł297 and half if you do the exchange. quite expensive I say
    Blimey!!! they must be well expensive your neck of the woods!!!... last one I bought from an Audi dealer worked out around Ł70 exchanged...

    <tuffty/>
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  27. #26
    Essflee's Avatar
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    Ł297 for a new MAF !!

    I'd be shopping about mate, i wouldn't pay that.

    Have you got any Vw or Audi garage specialists in your area, when mine was change at my local I think they charged me about Ł80...

    They would exchange your old one for new with there supplier...
    revo'd

  28. #27
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    Ł56.16 here.

    http://www.eurocarparts.com/ecp/k/ai...r/p/Car-Parts#

    I'm assuming you get the Ł30 surcharge back when you give them your old MAF??
    2003 Dolphin Grey S3, with a few mods....

  29. #28
    sportquattro's Avatar
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    Quote Originally Posted by Andy´ View Post
    A new MAF from audi are; Ł297 and half if you do the exchange. quite expensive I say
    Thats not right, I bought one from Audi Plymouth a month ago an it worked out at about Ł80 once I had taken the old MAF back 5 mins to fit and bobs your aunty
    Last edited by sportquattro; 4th May 2010 at 16:12. Reason: Lousy typing (again)
    1999 Audi S3 Superchips remap, Forge 007p, Phatnoise, Black Diamond Discs & DS2500 pads, N249 Deleted, Badger 5 TIP, Poly dogbone bush, Bilstein B8's and Eibach Springs.

    1986 Audi Coupe Quattro 2.2 restoration project

  30. #29
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    Quote Originally Posted by OllieH View Post
    Ł56.16 here.

    http://www.eurocarparts.com/ecp/k/ai...r/p/Car-Parts#

    I'm assuming you get the Ł30 surcharge back when you give them your old MAF??
    Would like to know too...
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  31. #30
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    guys quick question. What is the more accurate way to convert g/s to bhp for a s3. Divide by .8 or * by 1.31

    Also what is more accurate for bhp, MAF or vagcom (calulating torque to get bhp)

  32. #31
    Welly's Avatar
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    Quote Originally Posted by S3 Nattie View Post
    guys quick question. What is the more accurate way to convert g/s to bhp for a s3. Divide by .8 or * by 1.31

    Also what is more accurate for bhp, MAF or vagcom (calulating torque to get bhp)
    * by 1.31?

    I always * by 1.25?!?!

    Huh?
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  33. #32
    finesse's Avatar
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    Quote Originally Posted by S3 Nattie View Post
    guys quick question. What is the more accurate way to convert g/s to bhp for a s3. Divide by .8 or * by 1.31

    Also what is more accurate for bhp, MAF or vagcom (calulating torque to get bhp)

    Divide airflow by 0.8, using vagcom to get airflow
    Last edited by finesse; 4th May 2010 at 14:29.
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  34. #33
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    Quote Originally Posted by Welly View Post
    * by 1.31?

    I always * by 1.25?!?!

    Huh?
    from rosstech

    Here's a good sanity check for the status of your MAF. Do a full-throttle run all the way to redline in a single gear (second works fine). Group 002 usually shows air mass in g/s (in many modern ECU's, consult your Factory Repair Manual for the specific group for your particular vehicle). Your peak airflow should be roughly 0.80 times your horsepower if you are close to sea level. So, if you have a stock 150 hp 1.8T, expect around 120 g/s. If you see significantly less than that, you MAF may be on the way out. Also note that airflow will be markedly different at higher altitudes due to reduced ambient air pressure, especially with naturally aspirated engines that do not have forced induction to overcome that deficiency. This still works if you are chipped, but "race" programs may make more power through timing, rather than airflow. Therefore, take all readings with a grain of salt.
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  35. #34
    www.badger5.co.uk

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    for the guide calc I personally use 1.25
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  36. #35
    S3 Nattie's Avatar
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    I have always done mine by dividing by .8 but yestereday someone told me * 1.31 is more accurate for a S3 - LCR - TT.

    They also said that the MAF value is more accurate to the actual flywheel bhp than the vagcom calculation you can do

    What would you use VAGCOM or MAF for an indication of the bhp of the engine

  37. #36
    finesse's Avatar
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    lol so nothing is accurate then;

    Dyno's are not respected
    Airflow reading calculations are a personal choice


    So how do you find your engine power ...
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  38. #37
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    Quote Originally Posted by finesse View Post
    lol so nothing is accurate then;

    Dyno's are not respected
    Airflow reading calculations are a personal choice


    So how do you find your engine power ...
    ...at the lights!!

    <tuffty/>
    Silver 2001 AMK S3. Silver alcantara interior... now with added powarrrrrrrr, torques. VAGCOM + KII-USB. >> My build thread...

  39. #38
    JD09's Avatar
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    Get inside it and count the horses . . .

    Think I'm going to do some logging tonight. Finally finished a couple of documents and have a free evening (yes, I should be at the gym, but CBA!).

  40. #39
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    Quote Originally Posted by JD09 View Post
    Get inside it and count the horses . . .

    Think I'm going to do some logging tonight. Finally finished a couple of documents and have a free evening (yes, I should be at the gym, but CBA!).
    total fitness Chester, OMG, the women :o
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  41. #40
    Welly's Avatar
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    Quote Originally Posted by JD09 View Post
    Get inside it and count the horses . . .

    Think I'm going to do some logging tonight. Finally finished a couple of documents and have a free evening (yes, I should be at the gym, but CBA!).
    I'll be out doing the same mate - I would go to the gym but I can't be arsed. And don't belong to a gym.

    What I should be doing is playing Call Of Duty, not logging the car. Or spending time with the missus, but that comes last place.
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