[dann_04]

Hi, i drive an 03 civic si(ep3) with the k20a3 5 speed manual. Right now i'm getting around 34mpg. I want to do better, and on my old metro it was easy, shift a 2k and you get good gas mileage. This car isn't the same, it lugs under 1.5k and if you shift at 2100 rpms(before vtec) it gets worse mpg than shifting at 3000 rpms. So i was wondering also, when i'm cruising is it better to do 40 mph at 2100 on 3 valves, or is it better to cruise at 45mph at 2300 rpm's on 4 valves? Anyone have a scangauge that can check on this for me? Also is it better to shift at 2500, 3000, or 3500 for in city mpg? It's really confusing for me because i'm so used to keeping speed and rpms low, but now i have the whole vtec thing with 3 and 4 valves thrown in. Just trying to figure out what's more eficient with this dangfangled technology lol. But so far it's been pretty good to me and only has 12.5% parasitic loss to the wheels. I am eventually going to install the 6th gear from a tsx, but that comes after the warranty is up. Any help is appreciated.