"mrdancer" wrote in news: snipped-for-privacy@prairiewave.com:
Yep. It's in closed-loop as soon as the ECM receives a valid signal from the primary oxygen sensor, which these days is about 30-40 seconds from a cold start. But it's still in "warmup enrichment" mode until it sees full coolant temp, which can be up to ten minutes from cold, depending.
1 psi per every 10 deg F.
Correct.