CQ HVAC delete

[MikeB25]

I'm AAN swapping a '90 CQ and converting to primarily track use so I will be removing the A/C. If I remove this harness altogether (the bottom part):
https://audi.7zap.com/en/usa/audi+coupe ... 71-972065/
will there be any unintended consequences?

Secondly, I want to simplify the HVAC module as much as possible, starting with removing the evaporator, possibly even removing the automatic control. Has anybody ever adapted a different type of actuator to the various flapper doors on the HVAC module, like a stepper motor or simple electric actuator so I could get rid of most of the other harness?

[alxdgr8]

How about removing all of the factory stuff and then running a universal heater box for defrost?
https://www.summitracing.com/parts/sum-991102-1/

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[MikeB25]

I'm also considering that option. I'm not sure if it will fit as nicely as the factory unit but it looks pretty compact. I need to decide if I want to fabricate ducting or fabricate control cables/mounts.

[Berserker]

I've done what I think was later b4 90 manual climate control/heater box swap into a CQ in the past with a friend. Is that not an option? I don't remember how that affected wiring harnesses, but it makes vent actuation simple.

[MikeB25]

Definitely an option. If I can find someone that is selling the manual control and heater box, or wants to trade for an automatic unit, that is the route I would go. It would be ideal if the manual controls could be adapted to my auto heater box but it's not clear if that would work.

[pete82]

Hi Mike

I think I responded to this on facebook the other day.

This is the thread for the guy who used a cabriolet rear window demister on the front screen in his track car, well worth a read.

https://www.s2forum.com/forum/general/open-topic-new/50172-audi-80-saloon-s2-nearly-finished