question...my car seems to be lacking in power sometimes...and the volts like to flop around alot when i hit the brakes....ive read where other cars have >14 volts running with car idling...with my voltmeter i have...it shows only a lil above 13 at start up..then once im going it ranges from 12-12.7 or soemthing(depending on wut loads im having) to me that seems kinda low...wut could be the problem?

 

bump

 

in the 2 Efs that I have worked on , our voltage was like 12.5 while running with the basics running. This was with a smaller battery, I always thought it should be at 14 volts but I never had a problem.

 

see i use the stock 91 civic battery size...not for the ls...which is larger in size anyway becuz i dont have any room for that size of a battery on my stock battery bracket

 

you could always run your battery in ur trunk, just as long as u do it right