Xtreme57

iTrader: (6)

Hey guys,

Disregard the h/c setup in my sig - i am currently running h/c from an 03 Zo6 along with all the other mods in the sig (LTs, Underdrive, home ported TB, etc). I split a copy of LS1edit with a friend who has an 02 Z28.

Once we put on the Ls6 stuff in my car we used flashed my car with his stock tune and made only VERY minor changes, YET i still seem to get poor mpg (18 avg with a 50/50 city/highway split, and at BEST 220 miles per tank - that is down to the 'check gauges light btw).

I can't figure out why I get the mpg I'm getting - I drive VERY conservatively. No hard throttles, no redlines anymore, low rpm shifts, very grandmother-y quite honestly. So I can only assume it could be the tune.

Any thoughts as to why this is going on?

Old Geezer

iTrader: (3)

NE data logs??

Xtreme57

iTrader: (6)

I'll get them and post asap.

Pharcyde50

iTrader: (11)

I raised my cruising timing up some which helped. You can also adjust O2 r/l vs airflow mode to help out some. I lowered my values in airflow modes 6-10 to 350. A log with a wb O2 would be the best though.