Fuel Economy Woes
06-03-09, 11:46 AM
#17
To the OP: Again, when I had my Cobra with hi-flow cats, my CEL came on because of the o2 sensors. I had to put CEL eliminators to trick the ECU into thinking the stock cats were on. Since you are not getting a CEL, it's probably not your o2 sensors.
06-03-09, 01:05 PM
#18
a often overlooked fact....check tire pressure make sure they are all the same and at the recommended psi
btw i was only getting 300 mp per tank averaging bout 14-16 mpg city but after cleaning throttle body and maf im getting 17-18 mpg 350 miles with a/c in city
btw i was only getting 300 mp per tank averaging bout 14-16 mpg city but after cleaning throttle body and maf im getting 17-18 mpg 350 miles with a/c in city
06-03-09, 01:34 PM
#20
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Also I think I would be getting wierd driving dynamics if some of the tires were at 28 and others were at 33. I will probably double check them for fun when I clean the MAF sensor.
06-03-09, 01:37 PM
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I was about to state this. If no "check engine light" is on, the o2 sensors should be fine.
To the OP: Again, when I had my Cobra with hi-flow cats, my CEL came on because of the o2 sensors. I had to put CEL eliminators to trick the ECU into thinking the stock cats were on. Since you are not getting a CEL, it's probably not your o2 sensors.
To the OP: Again, when I had my Cobra with hi-flow cats, my CEL came on because of the o2 sensors. I had to put CEL eliminators to trick the ECU into thinking the stock cats were on. Since you are not getting a CEL, it's probably not your o2 sensors.
Yeah... Thankfully I do not have a CEL. So it seems like my O2 sensors are probably ok.
06-05-09, 09:56 PM
#23
I thought about the tire pressure item, however I switched out my winter wheels only a month ago. I always equalize the PSI on all wheels to 33 before putting them on. I have a hard time thinking that the psi would lead to such a dramatic MPG change. It could contribute but not alone create a 20-40% mpg drop. Plus I was driving for a few weeks on the same wheel/tires and getting my old MPG before the tune.
Also I think I would be getting wierd driving dynamics if some of the tires were at 28 and others were at 33. I will probably double check them for fun when I clean the MAF sensor.
Also I think I would be getting wierd driving dynamics if some of the tires were at 28 and others were at 33. I will probably double check them for fun when I clean the MAF sensor.
let us know how you turned out after the MAF cleaning. i noticed a HUGE difference from this
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