Quote:
Originally Posted by Diesel_Dave
I never got the chance to do A-B-A testing and quantify it. I doubt the effect is that large, quite honestly. That being said, it's hard to see how it would hurt.
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I did some searching tonight, and it seems the prime benefit of the grille block is the faster warm up time and higher operating temps...which means the engine is more thermodynamically efficient?
Quote:
Originally Posted by steve05ram360
I did a 75% block in an effort to get a hotter IAT, managed 20*f over ambient. With the grille block in place & hotter intake air I still ran a 20.2 mpg with ambient air temps about the same for both runs (no aba). My truck is real consistent at 20.2 mpg for some reason. I can say though that around town throttle response is noticeably better with the grille bock in place & warmer IATs.
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Interesting on the throttle response, and the fact your IAT went up.