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Old 10-14-2012, 04:21 PM   #1 (permalink)
EcoModding Lurker
Join Date: Oct 2012
Location: Las Vegas
Posts: 36

97 accord auto - '97 honda Accord lx
90 day: 28.88 mpg (US)
Thanks: 1
Thanked 1 Time in 1 Post
How to increase my mpg?? (98 civic LX 5-speed, AC always on)

I have a 98 civic Lx 4dr lowered timing at 14* (runs a little better then12*)
Tires at 45 psi synthetic oil full tune up valves adjusted new filters.
Just installed my vacuum gauge last week (still trying to figure out the best shifts)
I have to run my a/c since its so hot here in Vegas and I have two kids always with me.

Couple questions.
When I use my vacuum gauge is it better to

I guess what it all comes down to is a higher vacuum 12-25 reading and a higher rpm 3000-3500 reading better then a lower 0-8 vacuum reading and a lower 2000-2500 rpm reading

While shifting should i Keep my vacuum closer to 15-20 (idle) and hold the gears longer and then shift at 3500 so it stays in a good vacuum range after shift or shift at 23-2800 and have the vacuum go closer to 5 in the (poor )

Also when climbing a hill on freeway do I try to stay in fifth and have vacuum readings in 5 poor/ fair or shift to 4th and 3000-4000 rpm and feather the pedal to stay in good 12-18 vacuum readings

Thanks for all your responses and your help

1998 Honda civic Lx sedan 5sp completely stock with lowering kit 2in drop full fresh factory tune up and ngk plugs ngk blue wires. Just added vacuum gauge
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