[S0LlDSNAKE]

Hi everyone,

I've a 95' Primera P10 (European) with SR20DE engine and catalyst exhaust.
I try to understand how work the catalyst's conditioning when engin start?

Someone would know how ECU map works on those engine, and try to explain it to me ?
Is it a timer in minutes with an increasing of mixture richess ? or is it with a temperature sensor ? Or other ?

Thanks.