1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

CAI and airbox heater element

Discussion in 'A3/S3 Forum (8L Chassis)' started by Tallpaul, Aug 11, 2006.

  1. Tallpaul
    Offline

    Tallpaul Member

    Joined:
    Jun 14, 2006
    Messages:
    835
    Likes Received:
    0
    [Aug 11, 2006]
    Righto,

    My '98 A3 1.8T has what appears to be a heater element in the airbox. Presumably this is used to warm the air on cold starts until the engine warms up a bit?

    It's situated in the top half of the airbox and has two electrical connections.

    Can anyone confirm that this is what it's for?

    I'd like to stick some sort of CAI under the hood, not for any particular performance reasons, simply because the BMC CDA looks bling and Carbonio gives you a nice whooshy sound (i'm a chav at heart).

    Has anyone else done this and what did you do about the electrical connections to the heater thingy?

    Can they just be unpluged, taped up and put out of the way or are they gonna cause any problems if not connected to something?
    #1
  2. Ads

    Ads

    [Dec 29, 2014]

  3. PaulRS3
    Offline

    PaulRS3 Well-Known Member

    Joined:
    Jan 8, 2003
    Messages:
    1,093
    Likes Received:
    70
    [Aug 11, 2006]
    in the exit of the airbox lid?


    thats the MAF, air flow sensor.
    #2
  4. Tallpaul
    Offline

    Tallpaul Member

    Joined:
    Jun 14, 2006
    Messages:
    835
    Likes Received:
    0
    [Aug 11, 2006]

    ROFLMFAO!

    No, not the MAF :lmfao:
    #3
  5. god_thats_quick
    Offline

    god_thats_quick Numptie of the highest order

    Joined:
    Jun 1, 2004
    Messages:
    2,507
    Likes Received:
    1
    [Aug 11, 2006]
    Think that's the ignition coil controller that rich had fail on his car not too long ago!
    #4
  6. Tallpaul
    Offline

    Tallpaul Member

    Joined:
    Jun 14, 2006
    Messages:
    835
    Likes Received:
    0
    [Aug 11, 2006]
    care to elaborate, a quick search didn't throw up any posts about a 'ignition coil controller'? Who's Rich?

    Can't see how a sensor in this position could control anything? Certainly nothing as complex as ignition timing.

    I'm 99% conviced this is some sort of air pre-heater. Later model 1.8T's have a secondary air pump that feeds warm air in to the airbox on cold starts. My 1.8T doesn't have one and i presume this is what they used to warm the air on cold starts, but later ditched in favour of an electric pump (guess it doesn't work very well or had a high failure rate).
    #5
  7. Tallpaul
    Offline

    Tallpaul Member

    Joined:
    Jun 14, 2006
    Messages:
    835
    Likes Received:
    0
    [Aug 11, 2006]
    D'oh!

    Looks like it is related to the ignition, it's not any kind of sensor either:

    http://www.audi-sport.net/vb/showthread.php?t=20368&page=3&highlight=ignition+control

    What a dumb place to put it!

    I wander if this little box of tricks could be responsible for my crappy idle...

    It goes on the list of things to check!

    Do you reckon i could relocate it and still fit a CAI?

    The later spec 1.8T's really are simpler beasts to tune.
    #6

Share This Page