[mattrich67]

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

EXAMPLES:
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