What MPG are you getting after going F.I.

Originally Posted by SharpByCoop

I don't measure my Miles Per Gallon...

That's because I'm too absorbed with my Smiles Per Gallon.

Priceless.

Coop

Originally Posted by roplusbee

Well, the 2004 Tahoe I am driving gets the same type of fuel economy. It weighs 6200lbs makes about <300hp and has 22" Bigg wheels on it. It supposedly has a 25 gallon fuel tank as well. I have never put more than 20 gallons in it and have never gone more than 400 miles on a single tank.

Now about regret..............the only thing I regret is having to leave my car @ UPREV while waiting on my new radiator AND having to drive the dang-on Tahoe for 3 weeks. I love my Greddy TT Kit, F.I. TT-TDX, 34 Row OC, and my gauge setup.

The only thing I don't like is the idiots in Hondas sounding like bees or the random 1999-2005 Mustang Cobra that pull up beside me and try to impress me with their throttle blips. I did cave in once and downshift (SRM off) from 3rd (about 30MPH) to second and gave him a taste of open WG dump throttle blip. I saw what looked to be a gasp, surpise (wide open eyes), head snapped in my direction, and a quick jerk of the steering wheel. I laughed all the way to base!

Originally Posted by Blake@F.I. Inc.

If you drive with a light foot, you could actually see an increase. I remember seeing a guy on here who was getting 30+ on the HWY at 70-75. Its all gonna depend on how you drive, obviously with the larger injectors and fuel pump, if you are heavy on the throttle you will see a decrease. However like I said above if your driving patterns do not change, you will get an improvement because it takes less input of the throttle to achieve the same thing.. Hope this helps.

Originally Posted by Motion Lab

Turbos absolutely increase the efficiency of the motor which will in turn increase economy when driven conservatively. Supercharger set-ups actually add parasitic drag onto the engine from spinning the blower. This is why they do not see as great of increase in economy regardless of driving style.

Thanks,
Alex Goodwin
AlexG@motionlabtuning.com

Originally Posted by Nixlimited

I track my gas mileage on an app (Gas Cubby) so after I get my TT back, I will share actual empirical results with people. I have a year of tracked gas mileage in stock form (based on gallons in and odometer) that I can use as the baseline.

Originally Posted by Baer383

My car is not a daily driver so even when I wasn't FI I still didn't check the mpg I just drive it and fill it up same as now.

Originally Posted by roplusbee

Awesome! I only check mine to look for a drastic change, which would point out if I am having issues. I mean if I get something much higher or lower than 12-13.5MPG in stop and go traffic, I am going to start looking for problems.

Originally Posted by Baer383

I just watch my AFR gauge and try to keep it out of the 10's.

Originally Posted by theDreamer

I just do not believe that, to the level that you are posting about.
A 34-35MPG is almost 30 increase over the factory rating which have been posted to be fairly accurate at 27MPG. I understand turbos added create certain increases in economy but you also have the tune which plays a large factor. I doubt you sent the car home with an economy tune trying to maximize MPG.

Originally Posted by tower74

Found it....This was with FI on the car. It went down after to around 34 after it was all said and done.
Don't mind the engine light...cats were burnt up.

Originally Posted by DEpointfive0

Brother, that gauge isn't accurate once you change out the fuel injectors...


But if you have a conservative tune, a Turbo kit WILL add efficiency...