how to get better fuel economy?
08-23-2005, 06:32 PM
#11
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other then using a K&N airfilter, good spark plugs and tire pressure...
when was your last oil/oil filter change? A high quality oil along with denso iridium spark plugs, K&N, and 94 octane gas, is why I see good mpgs. These guys are dedicated Mobil 1 fans for the most part as you already know. I however, have found a new favorite in Amsoil. just my $0.02
08-23-2005, 06:37 PM
#12
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big 2nd on the vacuum leaks, but you would get a CEL if there was a problem.
the codes would tell you MAF, bank 1 sensor and bank 2 sensor would all have insufficient oxygen.
08-24-2005, 04:13 AM
#13
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Re: other then using a K&N airfilter, good spark plugs and tire pressure...
k&n air filter check.
good spark plugs (bosch platinum +4s) check.
tire pressure (39/34) check.
94 octane gas check (it's near $3/gallon here!).
an oil (mobil 1) and oil filter (mann) change is due in about 1k miles. thanks.
good spark plugs (bosch platinum +4s) check.
tire pressure (39/34) check.
94 octane gas check (it's near $3/gallon here!).
an oil (mobil 1) and oil filter (mann) change is due in about 1k miles. thanks.
08-24-2005, 04:29 AM
#14
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Re: I averaged 27 mpg
i've seen knock sensor and cylinder misfire codes last winter, and replaced the plugs, and haven't seen them recently. i've seen fuel trim system too lean codes last summer, but they were resolved with a maf replacement.
thanks.
thanks.
08-24-2005, 04:32 AM
#15
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Dual responses.
A) Drove to work today at or below 80 mph with no tip usage. Computer showed avg. speed of 58 and avg. mpg of 24.8.
B) If you are cruising at or below 2000 rpm you will hear a droning. It's something that I don't mind, but others may. Above 2000 rpm, it's a bit louder than normal, but hardly noticeable. The time you really hear a dramatic difference is when you use the tip and play around in the 4000 rpm range. People around you won't have a clue what they're up against! The looks on the faces of the fart piped civic drivers is priceless and more than one Porsche driver has given an approving nod or thumbs up.
B) If you are cruising at or below 2000 rpm you will hear a droning. It's something that I don't mind, but others may. Above 2000 rpm, it's a bit louder than normal, but hardly noticeable. The time you really hear a dramatic difference is when you use the tip and play around in the 4000 rpm range. People around you won't have a clue what they're up against! The looks on the faces of the fart piped civic drivers is priceless and more than one Porsche driver has given an approving nod or thumbs up.
08-24-2005, 06:19 AM
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i was thinking exactly that on my drive to work this morning ...
i'll have to check my records, but i believe i put in the k&n air filter some time towards the end of last year, and checked it back in march (it was clean). i would be surprised if it's majorly dirty, but i'll check and clean/re-oil.
08-24-2005, 06:57 AM
#20
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How is it at 2500 rpm?
With an S8, that's where the tach sits when cruising at 63-64 mph (with a 55mph speed limit). Also, I'd be replacing the H-pipe with an X-pipe to smooth out the tone a bit.