I have a 160. I'm in Texas
where temps get to 100 very easy. This all said, I have noticed it running .5 "richer" on my wideband with the 160 vs stock. However, the peace if mind that comes with not heating the block and internals too hot ( metal fatigues...) is somehow worth it for me on my 200,000 mile plus engine too
---------- Post added at 06:06 PM ---------- Previous post was at 06:03 PM ----------
And as far as fuel mileage goes, I have not noticed any serious drawbacks as my car still manages 20 mpg's ( if not a little more ) on road trips.
It should be said though I have 3.08 gears lol.
Only thing that'll really suck about the thermostat being a 160 is that the heater will never be good and hot. Just barely warm... :/