quattroworld.com Forums: it really depends on what you do with a car. If somebody putt-putts around at 2k rpms and never

it really depends on what you do with a car. If somebody putt-putts around at 2k rpms and never
Posted by: julex (6623) on 2015-06-23 09:29:06 In Reply to: Yea, no idea. Probably too much resistance on an old car's harness. posted by Timtheguru on 2015-06-22 18:19:56	Share \| Report

hits boost, the ICMs have easy life. If you do WOTs all the time, visit track, drive in high RPMs with a lot of load, the ICMs have to work hard.

Remember that each ICM has to switch spark (RPM / 60 / 2) * 3 times a second (that's 150 times a second at 6k rpms for example) and the amount of energy flowing through the circuit (charging time in ms) is directly dependent on how much air/fuel goes into the pot.

I hope this settles why they need heat sink in high performance driving mode.

Thread:

Any clever solutions to mounting the ICM's after losing the stock airbox? - S4gasm (LotR) 2015-06-22 11:12:14 (274 views)
- update: 034 mounting plate worked out well.. - S4gasm (LotR) 2015-06-30 11:48:54 (205 views)
- Mine have been on the strut tower since moving to an open element filter 4-5 years ago. I haven't - AudiSportB5S4 2015-06-27 11:42:08 (166 views)
- I've got an 034 mounting plate - 1illA6 2015-06-23 13:10:48 (221 views)
  - worked great, thanks bud! - S4gasm (LotR) 2015-06-30 11:49:09 (152 views)
  - never seen one...YGM - S4gasm (LotR) 2015-06-23 13:32:35 (171 views)
- Mine are currently just "hanging" there after installing my SRD X-1 intake...tracking this for info - hardon 2015-06-22 18:00:06 (219 views)
  - Are those stock coils I sent you working out ok? - Pitgrrrl 2015-06-23 17:10:37 (174 views)
    - Honestly, haven't had any misfires yet so no need to replace any current coils yet - hardon 2015-06-23 22:06:54 (201 views)
- Yea, delete them and go with the modern 2.0t coil conversion, your gonna want it sooner or later - The Scrambler 2015-06-22 11:48:13 (305 views)
  - Such a bullshit mod that puts weaker coils on. Stop suggesting it people. - Snow Trooper 2015-06-24 12:23:40 (275 views)
  - Meh, 11yrs so far and still stock coils. Sure, if you've got several bad coils and source the parts - PKmode 2015-06-22 13:20:35 (330 views)
    - Yeah, I'm running stock coils, have a box of spares, have had maybe three go south on me - JonathanSEA//S4 2015-06-23 16:54:19 (237 views)
      - Same. I have a big ziplock bag full of coils. I think I bought 10 for $50 and used two on my B5A4. - PKmode 2015-06-24 16:50:54 (204 views)
    - You can build your own for a fraction of the price of a pre-assembled kit and better quality. - Pitgrrrl 2015-06-23 16:45:01 (185 views)
    - ICMs suck, replaced twice and still didn't resolve the ICMs failing. Think they just get too hot. - Timtheguru 2015-06-22 13:50:40 (288 views)
      - That seems odd. I live with heat like our 114-115*F temp this week and never an issue.  -  S4 Adam  2015-06-22 18:14:57 (255 views)
        
        Yea, no idea. Probably too much resistance on an old car's harness.   -  Timtheguru  2015-06-22 18:19:56 (195 views)
        
        it really depends on what you do with a car. If somebody putt-putts around at 2k rpms and never  -  julex  2015-06-23 09:29:06 (292 views)
        
        Disagree, they are fine for all conditions.   -  Snow Trooper  2015-06-24 12:26:21 (167 views)
      - Sounds like you forgot to have them properly applied to a cooling block?  -  jprice  2015-06-22 13:58:07 (277 views)
        
        Applied correctly with awesome thermal paste.   -  Timtheguru  2015-06-22 14:56:12 (210 views)
        
        Maybe too much paste? I've only lost one ICM in who knows how many miles, a lot   -  JonathanSEA//S4  2015-06-23 16:24:45 (179 views)
        
        "applied correctly"   -  Timtheguru  2015-06-23 16:32:11 (191 views)
    - exactly. - S4gasm (LotR) 2015-06-22 13:45:12 (195 views)
  - x2 - zahntoid2 2015-06-22 12:16:29 (209 views)
- RS6 bolt down conversion. - Timtheguru 2015-06-22 11:42:20 (330 views)
  - i already have them on the heat sinks, cut it from the box. Any pics of this conversion? - S4gasm (LotR) 2015-06-22 11:48:06 (208 views)
    - Heh - Timtheguru 2015-06-22 12:15:51 (353 views)
      - I second this. it is bascially 2.0t conversion except that instead of leaky spacers + 2.0t coils you - julex 2015-06-22 14:18:47 (326 views)
        
        I definitely want to switch out coils and get my engine covers back on.. at least until I have - Timtheguru 2015-06-22 15:04:51 (278 views)

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