I saw a mention of the "20k switch" in a thread about overheating, but it wasn't addressed further and I don't know what the poster was referring to (and a search didn't bring up any further info that I could find). It seemed to suggest that there is some sort of electronic switch in the ECU that changed something at the 20,000 mile point.

Any comments?

 

No switch.

I'm well over 30k, no change.

S

 

just rolled over 30k this weekend, and there was no noticable change at 20k or 30k

 

^maybe the switch was something broke for that person at 20k?

 

Good point. Perhaps I just mis-read what s/he was saying.

I went back and tried to find the post in question, and naturally I can't find it now. I did find another reference, however, though in this case it's a reference to the RX-7:

"i was just wondering if any one has had there gauge cluster disasembled or out of the car yet. the reason i am wondering is becouse on the 7's there is a switch on the odomitor. its called a 20,000 mile switch. it runs the car ritch and at a "safe" timming set till 20,000 miles for "proper" engine break-in. i was wondering if any one has hit that milage yet and if you have have you had a noticable increase in power?"

There's even a reference to the 7's shop manual that shows where this switch is mentioned, so I guess it's not made up. The question is whether or not the 8 has this same switch, I guess.