MPG going very low!
This summer I had good MPG (around 18) in the city. It was even better (about 22) when I did a longer trip (open road), and around 20 with mixed road (city/highway).
Now, the winter's near, temperatures are low (some 50 and going lower), and my MPG has gone to a half! I'm doing around 10 MPG! (it's a 2.5 Ltr) [img]images/graemlins/mad.gif[/img]
I drive in the same way I did before, I use the same fuel. Only thing I changed since was that I rerouted the air intake, which was originally between the radiator & the front grille (stock '93 YJ), so now the tube goes from the airbox (Stock), makes a 180-degrees turn UP and is aligned with driver's side grille-reinforcement-bar (the one that goes on top of everything, from the grille to the firewall). The air it gets is now a bit hotter than before, I presume (and the tube points backwards), but I didn't notice any lack of power or any other change in engine behaviour.
Could that air-intake be the reason? Could it have so much importance to MPG?
If it helps a bit, in the city I change gears a bit over 2000 RPM (some 2200-2500), so when I put in the next gear it's low RPMs, but not stalling. The minimum.
BTW, how do you guys experience the low temperatures & MPG ratio? Going low, or going VERY low?