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  1. #1
    Andrew@A.L.D's Avatar
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    Audi S4 Maf, Badger,Tuffty,Welly

    I see that wellys and Tufftys Mafs are maxing out with there set up

    I see your looking at a S4 maf but which one will you be trying out?

    N/A 4.2L or 2.7 BI Turbo one
    Was 531bhp 8L S3 thats going to break the 600+ bhp Club then break something else. Lets see what this OD HTAGT3582r can do
    My S3 Twists Drive shafts for fun.

    FOR SALE
    Sparco Torino 2 sport seats
    Adjustable FPR from 1-5 bar, 2 sets of Unused ARP 3/8 2000 rod bolts
    , relentless 200 cell cat pipe, Std AGU Crankshaft. Ported & Reconditioned Cylinder head service.

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  3. #2
    MUSH's Avatar
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    Cant you use the s3 maf but in the 4 inch tube and scale the sensor parameters to suit in the map?
    Audi S3 1.9 GT30....




    ....that is all

  4. #3
    Andrew@A.L.D's Avatar
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    Not sure the s4 has a different sensor? Young the size of the tube is a option just looking into it before mapping
    Was 531bhp 8L S3 thats going to break the 600+ bhp Club then break something else. Lets see what this OD HTAGT3582r can do
    My S3 Twists Drive shafts for fun.

    FOR SALE
    Sparco Torino 2 sport seats
    Adjustable FPR from 1-5 bar, 2 sets of Unused ARP 3/8 2000 rod bolts
    , relentless 200 cell cat pipe, Std AGU Crankshaft. Ported & Reconditioned Cylinder head service.

  5. #4
    Andrew@A.L.D's Avatar
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    done a bit of research and here is what i found on the net

    S3 has a 2.80 bore

    2.7 bi turbo is said to be 3.00 bore

    4.2 N/A has a 3.5 outer bore not sure what ID it has but looks like it will be over 3.00
    Was 531bhp 8L S3 thats going to break the 600+ bhp Club then break something else. Lets see what this OD HTAGT3582r can do
    My S3 Twists Drive shafts for fun.

    FOR SALE
    Sparco Torino 2 sport seats
    Adjustable FPR from 1-5 bar, 2 sets of Unused ARP 3/8 2000 rod bolts
    , relentless 200 cell cat pipe, Std AGU Crankshaft. Ported & Reconditioned Cylinder head service.

  6. #5
    Sam_'s Avatar
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    I'm going to see the guy building that big turbo S3 in my thread at the weekend so I'll ask which he used on his GT2871R build. I think he may be going MAFless on the new build.
    Handling mods++. GTX30 soon-ish. Hiding parts from the mrs since 2011. Build thread

  7. #6
    beachbuggy's Avatar
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    RS4 mafs are good for 550g/s or 600bhp. So unless you pan on going over that you can use the RS4 Maf ok,

  8. #7
    www.badger5.co.uk

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    0280218038 maf i used to un on my ibiza (max'd it) measures 77mm ID 86mm OD
    I cant for the life of me remember what model it came off.. anyone match the numbers to the donor? - S4 maybe?
    **http://www.facebook.com/Badger5Ltd**

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    Badger 5 Ltd, Queen Annes Gate, Oldends Lane, Stonehouse, Glos, GL10 2DG


    http://www.badger5.co.uk, Tel:01453822880
    bill@badger5.co.uk
    **NEW** Badger5 Section CLICK here>> http://www.audi-sport.net/vb/213-badger-5/

  9. #8
    s3dave's Avatar
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    Quote Originally Posted by badger5 View Post
    0280218038 maf i used to un on my ibiza (max'd it) measures 77mm ID 86mm OD
    I cant for the life of me remember what model it came off.. anyone match the numbers to the donor? - S4 maybe?
    Application List

    Vehicle
    Year
    CC
    Engine Code
    AUDI - A6 2.7 T Feb 1999 to Jan 2005 2671 AJK AUDI - A6 2.7 T Feb 1999 to Jan 2005 2671 AJK AUDI - A6 Avant 2.7 T Feb 1999 to Jan 2005 2671 AJK AUDI - A6 Avant 2.7 T Feb 1999 to Jan 2005 2671 AJK AUDI - A6 Avant 2.7 T quattro Jun 1999 to Aug 2001 2671 AJK AUDI - A6 Avant 2.7 T quattro Jun 1999 to Aug 2001 2671 AJK AUDI - A6 Avant 2.7 T quattro Jun 1999 to Aug 2001 2671 AZA AUDI - A6 Avant 2.7 T quattro Jun 1999 to Aug 2001 2671 AZA AUDI - A6 2.7 T quattro Jun 1999 to Aug 2001 2671 AJK AUDI - A6 2.7 T quattro Jun 1999 to Aug 2001 2671 AJK AUDI - A4 S4 quattro Sep 1997 to Nov 2000 2671 AGB AUDI - A4 S4 quattro Sep 1997 to Nov 2000 2671 AGB AUDI - A4 S4 quattro Sep 1997 to Nov 2000 2671 AZB AUDI - A4 S4 quattro Sep 1997 to Nov 2000 2671 AZB AUDI - A4 Avant S4 quattro Apr 1998 to Jul 2001 2671 AGB AUDI - A4 Avant S4 quattro Apr 1998 to Jul 2001 2671 AGB AUDI - A4 Avant S4 quattro Apr 1998 to Jul 2001 2671 AZB AUDI - A4 Avant S4 quattro Apr 1998 to Jul 2001 2671 AZB

  10. #9
    Welly's Avatar
    Testing dodgy Chinese gear...

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    Probably an RS4 MAF here - part number 077 133 471 K

    Well, dependant on what the deal is with the scaling on mine...
    ------------------------------------------------------------------------------------------
    "Marriage is like a coffin and each kid is another nail."
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    Quote Originally Posted by Prawn View Post
    Wellyboots, you are quite literally my most favourite pikey in the entire world




  11. #10
    Andrew@A.L.D's Avatar
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    Quote Originally Posted by beachbuggy View Post
    RS4 mafs are good for 550g/s or 600bhp. So unless you pan on going over that you can use the RS4 Maf ok,

    2.7 or 4.2 RS4 MAF?
    Was 531bhp 8L S3 thats going to break the 600+ bhp Club then break something else. Lets see what this OD HTAGT3582r can do
    My S3 Twists Drive shafts for fun.

    FOR SALE
    Sparco Torino 2 sport seats
    Adjustable FPR from 1-5 bar, 2 sets of Unused ARP 3/8 2000 rod bolts
    , relentless 200 cell cat pipe, Std AGU Crankshaft. Ported & Reconditioned Cylinder head service.

  12. #11
    www.badger5.co.uk

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    My S6 MAF's enormous..

    BUT - remember the idle g/s from a small displacement engine on a supersize maf will be pretty low signal, and I wonder how stable it will be
    **http://www.facebook.com/Badger5Ltd**

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    Badger 5 Ltd, Queen Annes Gate, Oldends Lane, Stonehouse, Glos, GL10 2DG


    http://www.badger5.co.uk, Tel:01453822880
    bill@badger5.co.uk
    **NEW** Badger5 Section CLICK here>> http://www.audi-sport.net/vb/213-badger-5/

  13. #12
    Andrew@A.L.D's Avatar
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    I think a RS4 2.7 one will be man enough for my 2.1 GTX3076r
    Was 531bhp 8L S3 thats going to break the 600+ bhp Club then break something else. Lets see what this OD HTAGT3582r can do
    My S3 Twists Drive shafts for fun.

    FOR SALE
    Sparco Torino 2 sport seats
    Adjustable FPR from 1-5 bar, 2 sets of Unused ARP 3/8 2000 rod bolts
    , relentless 200 cell cat pipe, Std AGU Crankshaft. Ported & Reconditioned Cylinder head service.

  14. #13
    Andrew@A.L.D's Avatar
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    Quote Originally Posted by badger5 View Post
    0280218038 maf i used to un on my ibiza (max'd it) measures 77mm ID 86mm OD
    I cant for the life of me remember what model it came off.. anyone match the numbers to the donor? - S4 maybe?

    Just got one of these now, just need the silicone hose but i can't find any hose that has a 86mm ID for the maf? is that OD correct bill, may wait till i get it
    Was 531bhp 8L S3 thats going to break the 600+ bhp Club then break something else. Lets see what this OD HTAGT3582r can do
    My S3 Twists Drive shafts for fun.

    FOR SALE
    Sparco Torino 2 sport seats
    Adjustable FPR from 1-5 bar, 2 sets of Unused ARP 3/8 2000 rod bolts
    , relentless 200 cell cat pipe, Std AGU Crankshaft. Ported & Reconditioned Cylinder head service.

  15. #14
    www.badger5.co.uk

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    86mm OD - rechecked yes

    I would confirm the sensor with your chosen mapper first... so he can map with it
    **http://www.facebook.com/Badger5Ltd**

    Check out the ever Growing eBay Shop>
    http://stores.ebay.co.uk/Badger-5-LTD?_trksid=p4340.l2563

    Badger 5 Ltd, Queen Annes Gate, Oldends Lane, Stonehouse, Glos, GL10 2DG


    http://www.badger5.co.uk, Tel:01453822880
    bill@badger5.co.uk
    **NEW** Badger5 Section CLICK here>> http://www.audi-sport.net/vb/213-badger-5/

  16. #15
    Andrew@A.L.D's Avatar
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    One last thing

    Is it the sensor thats the restriction or the housing ?
    Was 531bhp 8L S3 thats going to break the 600+ bhp Club then break something else. Lets see what this OD HTAGT3582r can do
    My S3 Twists Drive shafts for fun.

    FOR SALE
    Sparco Torino 2 sport seats
    Adjustable FPR from 1-5 bar, 2 sets of Unused ARP 3/8 2000 rod bolts
    , relentless 200 cell cat pipe, Std AGU Crankshaft. Ported & Reconditioned Cylinder head service.

  17. #16
    www.badger5.co.uk

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    http://badger-5.com/bin/published-bosch-sensor-data.pdf

    read page 54/55 on maf's and how they work

    sensor is a temperature device.. metal film resistor. it measures velocity, which is calculated into mass airflow by knowing the internal diameter of the tube it sits in.

    same mass air flow thru larger tube, the velocity slows down.. so maf sensor would ouput a lower voltage.. aka ecu would think a lesser amount of mass airflow went in.. Hence ask your mapper before adding something they may not wish to accomodate
    Last edited by badger5; 4th June 2011 at 13:26.
    **http://www.facebook.com/Badger5Ltd**

    Check out the ever Growing eBay Shop>
    http://stores.ebay.co.uk/Badger-5-LTD?_trksid=p4340.l2563

    Badger 5 Ltd, Queen Annes Gate, Oldends Lane, Stonehouse, Glos, GL10 2DG


    http://www.badger5.co.uk, Tel:01453822880
    bill@badger5.co.uk
    **NEW** Badger5 Section CLICK here>> http://www.audi-sport.net/vb/213-badger-5/

  18. #17
    1st Gear

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    So if I max out the S4 maf (337 g/s?) the tune would be based on map signal?
    Would I benefit anything if I use RS4 maf over maxed out S4 maf?

  19. #18
    <tuffty/>'s Avatar
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    Quote Originally Posted by BuuBBa View Post
    So if I max out the S4 maf (337 g/s?) the tune would be based on map signal?
    Would I benefit anything if I use RS4 maf over maxed out S4 maf?
    MAP runs out at 1.5bar so don't rely on that.. benefit of using an RS4 MAF is that the ECU and VCDS will see true airflow... however its not as simple as just fitting and RS4 MAF...

    Map will need rescaling and compensation maps fine tuned on a steady state dyno to tweak fuelling on part throttle loads for a start...

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

  20. #19
    Andrew@A.L.D's Avatar
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    Welly is still on a s3 maf and he's making 445 bhp

    I did run a s4 maff but now run a rs4 maf due to my gtx 4 in intake and power level of my engine spec
    Was 531bhp 8L S3 thats going to break the 600+ bhp Club then break something else. Lets see what this OD HTAGT3582r can do
    My S3 Twists Drive shafts for fun.

    FOR SALE
    Sparco Torino 2 sport seats
    Adjustable FPR from 1-5 bar, 2 sets of Unused ARP 3/8 2000 rod bolts
    , relentless 200 cell cat pipe, Std AGU Crankshaft. Ported & Reconditioned Cylinder head service.

  21. #20
    BENJAMIN's Avatar
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    I'm running a S4 2.7t maf housing with S3 sensor. It's reading around 280g/s and made 405.8bhp on Saturday. The idle is good!

  22. #21
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    Ofcourse the car will be tuned for the custom setup..

    Oh I did not know about the 2.5bar MAP...
    Is there any 3bar MAP that would fit straight to original position? Or would it be easier to plug the hole and take pressure from manifold to external map?

  23. #22
    <tuffty/>'s Avatar
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    Quote Originally Posted by BuuBBa View Post
    Ofcourse the car will be tuned for the custom setup..

    Oh I did not know about the 2.5bar MAP...
    Is there any 3bar MAP that would fit straight to original position? Or would it be easier to plug the hole and take pressure from manifold to external map?
    What the MAP sensor sees is irrelevant in context as it won't affect the engines ability to make power or run boost higher than 1.5bar... the 2550mb limit is hard coded to the maps binary and cannot be changed without decompiling the machine code...

    Using an external MAP sensor serves no purpose...

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

  24. #23
    <tuffty/>'s Avatar
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    Quote Originally Posted by BENJAMIN View Post
    I'm running a S4 2.7t maf housing with S3 sensor. It's reading around 280g/s and made 405.8bhp on Saturday. The idle is good!
    Not scaled then lol... S4 MAF tube should be good for 337gs (420 odd hp)... earlier S4's had Bosch MAF's and later ones used Hitachi... the data in the maps are different scaling wise and there is also an offset value to watch out for..

    AMK/BAM S3 maf tube runs out (in VCDS) at 292.58... APY max earlier...

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

  25. #24
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    Okay, I thought its the sensor that has 2.5bar limit.

    So professional tuner can make the ECU understand MAP boost pressure over 1.5bar?
    Or how the ECU can be tuned if the MAF and MAP is maxed out?

  26. #25
    BENJAMIN's Avatar
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    Quote Originally Posted by <tuffty/> View Post
    Not scaled then lol... S4 MAF tube should be good for 337gs (420 odd hp)... earlier S4's had Bosch MAF's and later ones used Hitachi... the data in the maps are different scaling wise and there is also an offset value to watch out for..

    AMK/BAM S3 maf tube runs out (in VCDS) at 292.58... APY max earlier...

    <tuffty/>
    Nope not scaled, was running an S3 maf and 550's. Now running an S4 maf and 630's, Afr looks good and drives really well. Could do with a custom mapping session but as far as an off the shelf file goes its really good.

  27. #26
    <tuffty/>'s Avatar
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    Quote Originally Posted by BuuBBa View Post
    Okay, I thought its the sensor that has 2.5bar limit.

    So professional tuner can make the ECU understand MAP boost pressure over 1.5bar?
    Or how the ECU can be tuned if the MAF and MAP is maxed out?
    The ECU interpolates data based on what it can see... I don't confess to fully understanding everything about it but it shouldn't be an issue if your tuner knows what they are doing with ME7 ECU's...


    Quote Originally Posted by BENJAMIN View Post
    Nope not scaled, was running an S3 maf and 550's. Now running an S4 maf and 630's, Afr looks good and drives really well. Could do with a custom mapping session but as far as an off the shelf file goes its really good.
    All that matters

    I really need to get mine finished lol...

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

  28. #27
    1st Gear

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    Thanks tuffty, once again!
    I havent decided who tunes the car cause dont even have all the parts yet.. But at least one tuner (in Finland) has managed to get 600hp with stock ECU from 1.8t, so he might be the one..

 

 

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