14-15mpg
05-23-2010, 11:10 AM
#12
5th Gear Member
Join Date: Jun 2007
Location: Decatur AL USA
Posts: 2,176
I got 17-19 mpg (actual miles/gallons) in town with my 2007 when stock. Take off in 2nd. Shift to 3rd at 1375 rpm. Shift to 4th at 1500 rpm. Shift to 5th at 1625 rpm. Moderate throttle opening. Im in OD by 35 mph. Heavier throttle at low rpm is more efficient than lighter throttle at higher rpm for the same acceleration rate.
PS With my 2011 5.0 (3.55) I start in 2nd and am in 4th by 15 mph in normal driving. Despite beating on it some to help seat the rings, and just for the hell of it, so far its returning 21 mpg in town if the Info Center can be believed. Will know for sure when I get through the first tank.
PS With my 2011 5.0 (3.55) I start in 2nd and am in 4th by 15 mph in normal driving. Despite beating on it some to help seat the rings, and just for the hell of it, so far its returning 21 mpg in town if the Info Center can be believed. Will know for sure when I get through the first tank.
05-23-2010, 02:22 PM
#13
Try getting lucas fuel treatment(small clear bottle with goldish liquid) and the octane booster(tall red bottle) put those in and fill up, reset the settings(mpg avg...etc) and seewhat that does, before i was averaging around the same as u, after that, ive been averaging low 20s in the city and high 20s on the highway....getting the cai/tuner combo willdef help too
05-23-2010, 02:30 PM
#14
4th Gear Member
Join Date: Mar 2006
Location:
Posts: 1,470
If your 05 has high mileage, when was the last time the air filter, fuel filter, and spark plugs were changed? Also, are you using different gas(e10?), and are you spending more time than usual sitting at idle due to heavier traffic, construction, etc.?
05-23-2010, 02:32 PM
#15
i just bought it a month ago it has 50,xxx miles on it i use 93 for gas
05-23-2010, 07:03 PM
#17
2nd Gear Member
Join Date: Jun 2009
Location: California
Posts: 277
whats wrong with my car its only getting 13-14 mpg not 14-15 the car is stock and its a 5 speed anyone know what it could be please help my foot is heavy i know but damn 13-14 mpg thats crazy last week i didnt step on it to much and still it was really bad.anyone else has had this issue what can i do to solve this my ls1 drunk gas but not like this
also i do all city driving no hwy
also i do all city driving no hwy
05-23-2010, 08:41 PM
#19
05-23-2010, 08:49 PM
#20
yes i do make short trips.but i will try and shift at 2000 & 2500 rpm's and see if my mpg change