[b3lha]

Originally Posted by TomsSVX

The only differences is the added EGR temp sensor on the later models. a 94 ECU will throw a CEL in a 92 considering there is not sensor there... but the 92 ECU will not in the 94
Tom

Have you actually tried this Tom?

I know the 92 ECU will detect whether there is an EGR temp sensor and switch into "california emissions mode" if there is, or remain in "standard emissions mode" if not.

You said previously that all the later models had EGR temp sensors and therefore all ran in "california emissions mode". But I assumed that the detection logic was still in the ECU and they would fall back to "standard mode" if no sensor was detected.

I can't help thinking that one mode or the other must have a couple of extra horsepower.