160 Thermostat and CA Smog

[JFP in PA]

The use of a 160 F thermostat will not impact your emissions for a variety of reasons, including that your DME is more than capable of adjusting the A/F ratio to keep the car in spec. We have installed many of them, and not one car ever failed annual emissions testing because of the lower coolant temps.

[xhifer]

Originally Posted by JFP in PA

The use of a 160 F thermostat will not impact your emissions for a variety of reasons, including that your DME is more than capable of adjusting the A/F ratio to keep the car in spec. We have installed many of them, and not one car ever failed annual emissions testing because of the lower coolant temps.

That's good news! I assume you're in CA and talking about pre 2000 boxster which still needs the tailpipe sniffer test? Just confirming because CA standards are different. Thanks