@Zapper: I've been tuning various platforms for 15 years now. What would you like to see in a data log to show no cons operation or power wise from the temps the colder thermostat produces vs the oem thermostat?
@leesrt: Per my monitoring and logging, operational parameters tune wise do not change much, if any, with coolant temps 160°f-204°f. Other tuners have not looked into this to confirm or have and keeping quiet.
All I know is that changing to the colder thermostat on the oem tune stopped all misfires reported by both cars I was having on the oem thermostat. Also no power is being restricted by having the colder one in.
I told a reputable tuner of the VT back in 2/15 that it would benefit, which they denied until here recently. Unfortunately I'm unable to find the post that mentioned it.....It could of been deleted.....