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  1. #1
    Andrew@A.L.D's Avatar
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    Intercooler and charge cooler on a S3

    Has it been done?

    Would there be any gains on a slightly modified S3 running about 20psi on the K04 Turbo?

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  3. #2
    ianysm's Avatar
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    Whats a charge cooler do?

    You'll definately get gains from an uprated Front mounted intercooler. More reliable boost thats not affected by temperature
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    Works 60% the time, Everytime.

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    Chargecooler is another form of cooling. I believe it uses some kind of coolant or just water. So water cooled instead of air cooled.

    2003 Audi S3 + Go faster bits

  5. #4
    Andrew@A.L.D's Avatar
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    A charge cooler is a water to air cooler a intercooler is a air to air so you get the idea

    I have already got a Ebay FMIC and just wanted to know if a charge cooler has been used as well as a inter cooler

  6. #5
    RIP S3dave

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    would you want to add more pipework? as opposed get an fmic effecient
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  7. #6
    Andrew@A.L.D's Avatar
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    There wouldn't be that much more pipe work with this chargecooler i've seen

  8. #7
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    it's not so much that it hasn't been done because it's hard or costly, but more because it's not really needed.

    For the power/flow, and heat generated by the KO4 on the S3, most large sized FMIC cores are more than capable of keeping charge temps very low without any extra aid.

    I guess the only possible benefit from a charge cooler would be a shorter pipe run, decreasing lag, and increasing throttle response slightly, although I think this would be marginal, and certainly not the case if a charge cooler were used alongside an FMIC
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    RIP S3dave

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    get water methanol. chemical cooling :D
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  10. #9
    <tuffty/>'s Avatar
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    I concur... seen some impressive results with this and its on my list of additions to mine

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  11. #10
    RIP S3dave

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    Quote Originally Posted by Andrew@A.L.D View Post
    There wouldn't be that much more pipe work with this chargecooler i've seen
    what temps do you log now with whatever intercooler you run?
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  12. #11
    Andrew@A.L.D's Avatar
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    Quote Originally Posted by badger5 View Post
    what temps do you log now with whatever intercooler you run?
    Not done a test yet with what i've got but its something i might try when i go down the BT road? but as the engine is standard-ish i don't thing i'll do it just yet.

    Will also try water/meth inj

  13. #12
    Westy's Avatar
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    I thought a Big turbo setup didn't require as much cooling due to the turbo not having to work as hard as a small K04! So surely your FMIC would still be as efficient, if not better with a BT setup?
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  14. #13
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    Mine seems to run cooler with the BT on. Was logging the other night, car at 90 degrees, 9 degrees outside, 18 degrees IAT's peaking to 25 degrees from a 2nd to 3rd redline logging test and dropped back to 18 degrees. I do also have a phenolic insulator which reduces heat transfer from the engine quite a lot...

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  15. #14
    Works 60% the time, Everytime.

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    Pretty decent. I was running logs while giving it some "spirited" driving round my race track and saw a peak of 30c with an ambient temp of 12c. Mostly hovered round mid 20's with the Forge t'intercooler.

    2003 Audi S3 + Go faster bits

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    You only need a decent FMIC...no doubt a Charge Cooler will do...but why re-invent the wheel?
    At 20ish PSI you'll pretty much get away with standard ICs...and a FMIC will solve the cooling issues right there.

    Can't see the need...especially when the S3 is plumbed for ICs to start with.

    It'll only be an issue on a K04 car anyway...by the time you get to decent sized turbos, they are operating on their efficiency curve and not adding much heat...whereas a K04 quickly goes outside it's efficiency range and into 'heat pump' mode when you crank up the boost....and if a FMIC will rectify that, why over complicate things?


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  17. #16
    Ess_Three's Avatar
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    Quote Originally Posted by MintyS3 View Post
    Pretty decent. I was running logs while giving it some "spirited" driving round my race track and saw a peak of 30c with an ambient temp of 12c. Mostly hovered round mid 20's with the Forge t'intercooler.
    I never saw more than 30 degrees inlet temps with my set up, summer or winter, despite running 1.85+ bar of boost.
    The average was in the 20s....even on the dyno.
    At 1.6 bar I was seeing 78 degrees inlet temps, after the standard ICs and before the FMIC upgrade.


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  18. #17
    ianysm's Avatar
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    Really need to get myself an FMIC me thinks!

    Soooo expensive though!
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  19. #18
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    yeah tis my next job, there always seems something better to spend the money on though, this weeks prject...fitted wardrobes
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  20. #19
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    Quote Originally Posted by 1animal1 View Post
    yeah tis my next job, there always seems something better to spend the money on though, this weeks prject...fitted wardrobes
    Livin' the Rock 'n' Roll highlife there, I see...
    Fitted wardrobes, yeah baby!


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  21. #20
    1animal1's Avatar
    The Clar!! it mouves!!!

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    it's the future Glen.....

    next job the 2 yr old kitchen needs refitting as the Pyrenean pup has pretty much chewed every corner

    eventually i will fork out for my half respray, FMEC and various other bits.....on my ever depreciating lump of metal
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  22. #21
    <tuffty/>'s Avatar
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    Quote Originally Posted by ianysm View Post
    Really need to get myself an FMIC me thinks!

    Soooo expensive though!
    The AH one is gonna be the best value for money one mate... work out less than 400 if you do it right and dead easy to fit yourself with the minimum of tools. 400 does seem a lot be well worth it to get the best out of a remapped S3

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  23. #22
    1animal1's Avatar
    The Clar!! it mouves!!!

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    dats da bad boy i is goin for init maaaaan
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  24. #23
    Westy's Avatar
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    I have the money now for an AH fmic but the other half wants to go on holiday before xmas
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  25. #24
    Works 60% the time, Everytime.

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    Quote Originally Posted by Westle View Post
    I have the money now for an AH fmic but the other half wants to go on holiday before xmas
    I hear Birminghams lovely this time of year.

    2003 Audi S3 + Go faster bits

  26. #25
    Westy's Avatar
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    Quote Originally Posted by MintyS3 View Post
    I hear Birminghams lovely this time of year.
    I've already managed to downgrade Lanzarote to the Algarve but I think Birmingham might be a step too far!
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  27. #26
    1animal1's Avatar
    The Clar!! it mouves!!!

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    apparently all the stars go to Benidorm...... luuurvely
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