I'm curious, then, because I'm in a bone-stock '11 (still in break-in period with an equally jelloish foot ), and I'm getting about 25-26 mpg freeway, 20 mpg stop-and-go driving, and about 22-23 mpg combined city/freeway. The Stage 1 is supposed to see a fuel economy increase... I wonder if that plateaus or starts to taper off with additional tuning/modifications.

 

I average about 21-23 mpg in the city and 25-28 mph on the highway ... but both of these values mean i'm shifting at 3k RPMs and staying out of boost

 

I got 23.1 mpg on an 800 mile round trip this past weekend. Mostly averaging 80mph.

 

how many galons are the tanks? i can't seem to put more than 43L in my tank thats when its pretty much bone dry.. my guess is with piping its 45L and total distantance i'm only gettting 350km on a tank with 7200km on the dial.. (probbaly still breaking in)

Also when it's getting to that bone dry state.. anything less than 1/4 tank i have to take it easy on the gas b/c the power dies under full throttel as if it's not getting gas.. I found this out the first time while on the road course. the back straight full throttel aproaching 150km/hr the car would all of a sudden die as if i took my foot off the gas pedal... id then let off the gas.. then get back on again and it would come back a bit.

My old Volvo V70R had two fuel pump's at staggered heights in the tank.. and i never came accross this phenomina.. i could also do 750km on a tank...60L Wondering if i should install a double pump in my mitsu..

 

Iirc the fuel capacity is 14.5 US Gallons.

On clockwise courses I can run to where the ow fuel warning comes on. On anti-clockwise-directions anything less than 1/2 tank causes fuel starvation issues.

I've not noticed any issues going straight to over 110 MPH.

 

That's about what I get. On track though I'm down to about 6mpg...