2013 Nissan 370z NISMO
On all my past cars being 4 cyl turbo, v-8 and 6 cyl I have always dropped in a 160 degree thermostat and went a step colder on spark plugs, among other things. Then got a tune.
My reason for a colder thermostat is, scraped from the web but I think it states it perfectly:
"The thermostat is there primarily to help the engine warm up in the morning. Most engine wear occurs when the engine is cold, once it's warmed up there is very little wear in a healthy engine."
(Please note my car is NOT driven during the winter).
Step colder spark plugs reasoning in my mind:
By using 1 step colder spark plugs it helps prevent pre-detonation. The only real reason is that it doesn't hold as much heat. Running a really hot plug will cause a lot of pre-detonation, I believe.
Normally though when doing this I am dropping in other performance mods (CAI, exhaust/headers, crank pulley) giving me about 50+ HP gain which I plan on doing all at the same time.
Not to mention engine timing benefits.
Now I will say I am pretty uneducated when it comes to wrenching so take the above with a grain of salt (flame suit on lol).
Thoughts?