Quote:
Originally Posted by ahanix1989
Wow, just woke up and already tons of great information! I'll have to tackle these one at a time...
@rmay635703:
It's been running Mobil-1 Truck/SUV oil for a while, but a lot of people are suggesting I switch to Valvoline, which I plan on soon. I've done some little things just to make the engine breathe better (Dynomax exhaust, modified the intake manifold, 180° t-stat)
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Flag on the play!
The fuel injection may be staying in "open loop" longer then it should.
Put that back to stock rated.
I'm mostly a GM and Toyota guy. On GM's swapping a 180 thermostat for a 195 almost always reduces the economy and makes drive-ability issues such as fowled plugs and plugged cats and causes CEL lights for o2 sensors. In the GM forums the post usualy start with " I failed my smog test. High HC reading.
On Toyota's they have a "jiggle valve" that allows for a small amount of bypass to preheat the radiator to prevent temp bounce as well as equalizing pressure so that the flow off the pump doesn't hold it closed. It also aids in bleeding air. 1/8 inch hole in the lip of the thermostat is a common shadtree trick to do the same.
Impressive gains with the changes you did.
