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2.0 TFSI Coil Packs on a 1.8T

Discussion in 'A3/S3 Forum (8L Chassis)' started by Westy, Dec 14, 2011.

  1. superkarl
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    superkarl MAN OF STEEL

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    [Dec 15, 2011]
    i wondered what the hell was going on in westys head. coz all the covers have the holes to run the adapters/coil covers
    #41
  2. Westy
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    Westy Double Dark Side! Diesel & 8P

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    [Dec 15, 2011]
    Loads of stuff in my head, most of it useless.

    I didn't realise that any cover would fit any head so I had surrendered to the fact that I would have to use a AEB cover with bolt in coils.

    Every day is a school day, as they say........ hey ;)
    #42
  3. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Dec 15, 2011]
    ...but happy with bolting the head from an inline engined A4 to a transverse engined S3??

    :whistle2:

    <tuffty/>
    #43
  4. Prawn
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    Prawn My other car is a MINI!!!!

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    [Dec 15, 2011]
    Kev, you say this like it's an easy option? Are you suggesting that you can lose the ICM and convert to tfsi coils whilst staying on ME3.8? or would you HAVE to switch to ME7x for this to work?
    #44
  5. Westy
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    Westy Double Dark Side! Diesel & 8P

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    [Dec 15, 2011]
    It's froma Passat if you want to get picky ;)
    #45
  6. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Dec 15, 2011]
    I know Mark (Byzan A4) has done this mod.... no ECU change required as far as I know

    <tuffty/>
    #46
  7. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    [Dec 15, 2011]
    Yeh its an easy enough swap if you can operate a soldering iron. No ECU changes required, just reroute the power feed and trigger wires from the ICMs into a later style harness.

    You can buy a harness repair kit from the dealer for about £25 and its just soldering then.

    Obviously you also need coils, be it early S3 bolt down hitachis, later push in coils, or the TFSI ones. I'd probably be going streight for some nice Red TFSI coils and the AEB/AGU version of the adaptors above so you dont have to change the rocker cover.
    #47
  8. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    [Dec 15, 2011]
    [​IMG]
    #48
  9. Westy
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    Westy Double Dark Side! Diesel & 8P

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    [Dec 15, 2011]
    Where did you get your adapter plates from?
    #49
  10. ScottD3
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    ScottD3 I want your faulty electronics Supporter

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    [Dec 15, 2011]

    You could do with a nice cover on that.
    Hide all them cables and weathered parts.
    #50
  11. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    [Dec 15, 2011]
    #51
  12. Prawn
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    Prawn My other car is a MINI!!!!

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    [Dec 15, 2011]
    Wow, I had no idea it was that simple! I think that's something I'll definitely be doing at some point then.

    Amazing that it could be so simple that the single trigger wire for the ICM is spliced into the newer style loom and then just powers each coil seperately! I'd have thought it'd be way more complex than that!

    Any downsides?
    #52
  13. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    [Dec 15, 2011]
    Yeh its pretty simple. The ICM is just 4 big transistors in a package, it works a bit like a relay and allows a small signal from the ECU to control the large power draw that the coil uses. Basically the new coils each have an individual single channel ICM built into them. So instead of having one ICM driving all four cylinders, each coil has its own, driven directly from the ECU.
    #53
  14. Prawn
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    Prawn My other car is a MINI!!!!

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    [Dec 15, 2011]
    That makes good sense Kev, considering the relibility issues of the standard S3/A3 coils for ME7x ecu's I'd not bother with it, but reading up, the TFSI stuff seems to be more reliable, and if the claims are to be believed, better for power.

    Based purely on reliability and consistency I'd like to change to individual coils like this, I've found the ICM seems to give strange behavior at times, having swapped mine for one from a mates car it drove totally differently, yet mine on his gave different results again.
    #54
  15. S3-SiB
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    S3-SiB Member

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    [Dec 15, 2011]
    Any how to guides or wiring explanation with cable colour codes for the AGU boys :)
    #55
  16. sportstractor
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    sportstractor Chugger

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    [Dec 15, 2011]
    There is an electrical manual floating around on the net. All engine wiring details are there
    #56
  17. S3-SiB
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    S3-SiB Member

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    [Dec 15, 2011]
    Any chance of a link as I had a quick read and flicking through vwvortex not to see much light - would appreciate it
    #57
  18. badger5
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    badger5 www.badger5.co.uk Site Sponsor

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    [Dec 16, 2011]
    not all tfsi coils are the same.. some are slightly phatter in their diameter, making them a very tight fit
    #58
  19. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    [Dec 16, 2011]
    Yeh, that Audizine thread seems to recommend the ones starting 06E and 07K (the full PN's are in the thread). The 06H ones from the newest models seem to crack and cause issues so best avoid those.
    #59
  20. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    [Dec 16, 2011]
    The problem with a "how-to" is there are a few variations of colors etc. Given your rewiring your ignition system, IMO its better taken on by someone that knows how to read a wiring diagram and knows how to find each cable, and confirm its the correct one. If you cant do that, then its not something you really want to be doing yourself imo.

    I wouldnt want to provide a set of instructions, that you then follow and blow your ECU up or whatever because your car happened to be different to how the diagram says it should be.
    #60
  21. ScottD3
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    ScottD3 I want your faulty electronics Supporter

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    [Dec 16, 2011]
    This might be a bit stupid but bear with me.

    If you put in the 2.0 coil packs, bigger spark, better burn. Does that mean you can put in bigger injectors and put in more fuel?
    #61
  22. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Dec 16, 2011]
    Silly boy :)

    Not quite how it works mate... AFR is AFR... same amount of air, same amount of fuel but more efficient burn...

    TFSI's were designed to be lean burners for emissions, if you add more fuel to the same amount of air all you do is make it rich...

    <tuffty/>
    #62
  23. ScottD3
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    ScottD3 I want your faulty electronics Supporter

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    [Dec 16, 2011]
    Put more air in it then? :)
    #63
  24. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Dec 17, 2011]
    Bigger turbo :eyebrows:

    <tuffty/>
    #64
  25. Westy
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    Westy Double Dark Side! Diesel & 8P

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    [Dec 17, 2011]
    Well I managed to pick up a set of 2nd hand coils that have done 15k miles for £20. Just need the adapters now.
    #65
  26. aragorn
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    aragorn "Stick a V8 in it!" Staff Member Moderator VCDS Map User

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    [Dec 17, 2011]
    Which PN did you get Westy?
    #66
  27. Westy
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    Westy Double Dark Side! Diesel & 8P

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    [Dec 17, 2011]
    I contacted the seller but he never got back to me with part numbers.

    They are apparently from a 57 plate A4 so I asked Jason.s to check for me. We think they are 07k905715f parts which are the good ones. I'll find out when they turn up.
    #67
  28. Westy
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    Westy Double Dark Side! Diesel & 8P

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    [Dec 29, 2011]
    I managed to get 4 mint A4 coil packs 2nd hand from eBay for £20 but their part number is 07K 905 715 D so I hope they'll be ok.

    [​IMG]
    #68
  29. Jason.s
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    Jason.s Active Member

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    [Dec 29, 2011]
    D`s are the early number. They superseeded into the F`s. If you need some F`s at some point let me know and i`ll see if i can get you some at a very cheap (for brand new originals) ;)
    #69
  30. Andrew@A.L.D
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    Andrew@A.L.D May add NOS to 600+bhp?

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    [Dec 29, 2011]
    Just started my car up for the first time in 3 months with the Mk2 S3 coil packs and 1mm plug gap

    Even with the timing out its a hell of a lot smoother but I do have the bottom pulley that helps with that also

    Weather there is a gain in performance i'm not that bothered as its worth it just for the smoother idle
    #70
  31. Dani_B19
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    Dani_B19 Audi-sports own special child.

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    [Dec 29, 2011]
    Jason can you get audi parts cheaper than from the stealers?

    Also glad to hear the coils good.
    #71
  32. Broken Byzan
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    Broken Byzan Photographic Moderator Staff Member Moderator VCDS Map User

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    [Dec 29, 2011]
    How many can you get at this special price????

    Room for 4 more?
    #72
  33. Jason.s
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    Jason.s Active Member

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    [Dec 29, 2011]
    Dont everyone jump on it :p

    £99.22 inc vat for a set. £140.93 inc vat is normal dealer rate. "Very special rates" only apply to Westy for loyalty points he`s built up :p That price is still 30% discount near enough
    #73
  34. Dani_B19
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    Dani_B19 Audi-sports own special child.

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    [Dec 29, 2011]
    I meant other car parts, need a new n75 valve and iat sensor lol.
    #74
  35. Broken Byzan
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    Broken Byzan Photographic Moderator Staff Member Moderator VCDS Map User

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    [Dec 29, 2011]
    i'm in if you can do them for that in the new year.

    Let me know mate, PM is acceptable. LOL
    #75
  36. Westy
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    Westy Double Dark Side! Diesel & 8P

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    [Dec 29, 2011]
    The D's should be ok but I wont find out until I've bought the adapters.
    #76
  37. Jason.s
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    Jason.s Active Member

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    [Dec 30, 2011]
    Just let me know when you want to do it Mark and i`ll do it :)

    Dani i could do some bits. Small bits i dont mind. Bigger bits i wont do as i only use the normal work post so aslong as it doesnt take the p1ss size wise i can get away with posting it for free and no one raises any issues with me using it :p
    #77
  38. Gops
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    Gops 6th gear @7000rpm

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    [Jan 26, 2012]
    Id be down for tht too if it's ok Jason... Anyone gt any adaptor plates? I'm in need of some coilpacks and this seems better to do then buying normal ones ey?
    #78
  39. <tuffty/>
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    <tuffty/> Badger 5 Edition Staff Member Moderator

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    [Jan 26, 2012]
    There are some being developed...

    <tuffty/>
    #79
  40. Jason.s
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    Jason.s Active Member

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    [Jan 26, 2012]
    PM me when you`re wanting to do it and i`ll give you the details of the transaction :p
    #80

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