Quote:
Originally Posted by jeffcat
While attempting to change out the fuel filter(still leaking) today on the VX and putting in the "proper" 4 heat range rating NGK plugs in today, I put in a new air filter and I got to thinking a bit.
The MAP sensor is 1 of 4 I believe factors that are put into the lean burn equation for the VX. I know everybody is running warm air intakes and and so forth, but would a high flow, closer to the throttle body conventional "cold air intake" actually improve fuel economy? The reason I ask is because you if you are running a dirty stock air filter, this would inherently increase manifold pressure since the suction effect is decreased by the dirty filter. Likewise, a high flow "cold air intake" would decrease the pressure in the manifold over the stock setup simply because the suction of the cylinder would have less resistance to overcome wouldn't it? I could be all wrong about that, but I just found that to be somewhat interesting.
Lastly, is the MAP even serviceable as in cleaning? I know it has a diaphram that goes to a digital input, but I didn't know if you could clean it up with something like MAF sensor cleaner or not.
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Map sensors are not serviceable.
A side note: On my HX tonight I discovered that obsessively trying to stay in LB *definitely LB* on the HX was actually using more fuel vs just shifting to the highest gear I could. I verified this via MPGuino and several trips up and down the same highway.