RPM and mileage question
#26
coolant leak that kills
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Originally Posted by slpin
well, this forum is pretty retarded....
notice how many people it takes to figure out there is a reason for OVERDRIVE...
and some dont even get it
notice how many people it takes to figure out there is a reason for OVERDRIVE...
and some dont even get it
#27
i am not a girl
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seems like a few people who participated in this thread would be better off driving stock civics. trying so hard to get owesome gas milage out of the rotary is not something it was meant to do. though real ways of improving it would be helpful.
#29
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Originally Posted by Kahren
seems like a few people who participated in this thread would be better off driving stock civics. trying so hard to get owesome gas milage out of the rotary is not something it was meant to do. though real ways of improving it would be helpful.
however there is another aspect of having good, or Mazda-specified, fuel consumption: it can be an indication of a good running engine. or rather more significantly if you AREN'T getting the proper mileage, then you have something that is not right...
#30
Originally Posted by coldfire
lol, yeah seriously if you can get good mileage that is great, but if you can't i think that's to be expected!
however there is another aspect of having good, or Mazda-specified, fuel consumption: it can be an indication of a good running engine. or rather more significantly if you AREN'T getting the proper mileage, then you have something that is not right...
however there is another aspect of having good, or Mazda-specified, fuel consumption: it can be an indication of a good running engine. or rather more significantly if you AREN'T getting the proper mileage, then you have something that is not right...
However, it *is* possible to get better fuel economy, even when driving hard. It involves getting rid of the stock ECU & putting something better in.
-=Russ=-
#31
HAILERS
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I just drove about twenty miles at 65mph with the cruise control on. In fourth gear the afr was reading 14.3 and when I tapped the brake pedal and switched to fifth gear and re-engaged the cruise the afr's went to the 15.1 range. This is without the O2 sensor connected and the SAFC having the LOW range adjusted for taking fuel out (not this day but weeks ago). That explains the somewhat lean 15.1 afr in case someone wondered. Fifth gear at 65 is more economical. Who'da thought.
#32
is The Whoopieschnootz
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I think the varying lowest 5th gear speed for people is speedo accuracy. If I grab 5th at 45 I'd better be going downhill. My speedo also reads ~10 fast. I can usually drive fine at 50 (40) though, so long as there's no big hills. I'd have to agree that 5th sounds more economical at highway speeds (well, the speeds I travel on the highway), but I've also had fuel computers (varying cars, stock and aftermarket) teach me some weird *** things about fuel economy.
#33
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Originally Posted by HAILERS
I just drove about twenty miles at 65mph with the cruise control on. In fourth gear the afr was reading 14.3 and when I tapped the brake pedal and switched to fifth gear and re-engaged the cruise the afr's went to the 15.1 range. This is without the O2 sensor connected and the SAFC having the LOW range adjusted for taking fuel out (not this day but weeks ago). That explains the somewhat lean 15.1 afr in case someone wondered. Fifth gear at 65 is more economical. Who'da thought.
on one hand leaner means less fuel, but it doesn't do you any good if you aren't burning as efficiently...of course there are many other factors, but unless you are running stratified combustion (that's a whole topic itself) 14.7 is theoretically more effective.
also, anyone tune cruise by EGT? i hear this is the better way to go because you can tell where the burn is most efficient...
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