zspot98

iTrader: (87)

I put a 224/228 cam in my car w/ LT's, stall and LS6 intake and am now getting about 13 mpg with normal driving in the city and was wondering if this is normal? The car is tuned and not running rich so I have to assume that it's all good, but would like to hear from some people that have been through this to see if my numbers are normal.

67Ranger

iTrader: (16)

it definetly doesnt help, but it shouldnt be that bad... My H/C 370 is gettin like 14ish right now.

KCFormula

iTrader: (4)

Depending on how big your stall is and how far off your partial throttle tune is, that seems very possible.

co.6z28

iTrader: (1)

i would look into your tune more. mpg seems too low

DONAIMIAN

iTrader: (18)

cam only, 400rw, 6 speed car, ive pulled high 20's on the hwy. Low 30's drafting and 18 wheelers.

rtr2001ss

iTrader: (2)

Heads/Cam, runs a little rich for the NOS. Still get 13 in town, 24 highway. Same as before.

ShevrolayZ28

iTrader: (4)

13 MPG sounds about right. Also, cold weather hurts your fuel economy.

zspot98

iTrader: (87)

My stall is a 3600 and I know we had to adjust the TB blade for it to idle better, but I filled up my tank of Friday and only put 40 miles on the car and it's down to 3/4 of a tank. This seemed a little crazy to me. I know it wasn't tuned by a professional, but my buddy is pretty smart when it comes to HPTuners and I've pulled the plugs and O2's since the install and it does not appear to be running rich. Any suggestions on a fix for this problem. Thanks

oupike1757

I have a 231/239 595/605 114 and I get 28mpg through the 6 on the highway. I have 42# injectors, 390 rear, LT, OR-X, Borla Stingers, Vararam intake, and a few other things. All tuned on a wideband and HPT. It is ALL in the tune!

Jeremy

ShevrolayZ28

iTrader: (4)

That's amazing!

SideStep

Your part throttle tuning is hosed... I am getting 28-29 mpg on the highway in 6th... 232/236 XE-R cam...

Ksett

There must be something wrong with the tune. I have an F13 in my Z06 and drove 3 hrs. to get it installed. I used the same amount of gas going there without the cam and coming back with the cam installed.