MarTT

Thanks to RafaTT for the great write up (see URL below). Yes I was one who had the Wahler thermostat as part of the ECS kit and the car showed it was running hot. I did this mod in conjuction with the EvoShield phenolic intake spacer mod (not good so far, I think a vacuum leak needs to be tracked down) but the thermostat is in! Of course I have not run the car much to tell you if it's still running hot or not. (I'll post on that later.) Not really easy, the bottom 10mm is a real bear to get out and get back in. Just takes patience and sometimes another pair of hands (thanks Mike!).
<img src="http://images10.fotki.com/v196/photos/4/41970/2378449/thermostat002-vi.jpg">

<img src="http://images10.fotki.com/v197/photos/4/41970/2378449/gasket027-vi.jpg">

<img src="http://images9.fotki.com/v171/photos/4/41970/2378449/gasket025-vi.jpg">

<img src="http://images9.fotki.com/v198/photos/4/41970/2378449/gasket029-vi.jpg"><ul><li><a href="https://forums.audiworld.com/tt/msgs/1304805.phtml">RafaTT thermostat replacement</a></li></ul>

GkRiKoRi

What did you replace the Wahler thermostat with then?

MarTT

Oh, sorry, the stock P/N 050-121-113-C

GkRiKoRi

Why would the one they provide have a different temperature spec? did you find out from them to send you another one in case it was defective?

MarTT

Yes, ECS uses the Wahler thermostat.

Check this link for more:<ul><li><a href="https://forums.audiworld.com/tt/msgs/1303829.phtml">Thermostat Chat</a></li></ul>

MCPaudiTT - DEFCON 1

description of the issue at the link below.<ul><li><a href="https://forums.audiworld.com/tt/msgs/1303829.phtml">Rafatt's Thermostat Sleuthing</a></li></ul>

GkRiKoRi

I guess I'll keep that new Wahler thermostat in the box and keep the stock in there for now...

Kareem of Elise

Excellent....this will come in handy.....