SStolen

iTrader: (22)

I'm really interested in mpg on turbo applications but I'd like to know what kind of E85 mileage you are getting. I was getting 10mpg before switching to E85. Curious what I will get afterwards.

boost27

iTrader: (3)

I run E85 in my 90 turbo eclipse and i get 17-18 mpg on e85, and 21-22 on gas.

skinnies

iTrader: (33)

My rx7 in my sig got 22mpg when we checked it this summer, but it is a lot lighter car. We also cruise very lean on e85 to help with our gas mileage, but it doesn't knock or stumble like it would on pump.

Ollie8974

Yes, Expect about a 10 to 12 % decrease in mileage/performance.

NicD

iTrader: (7)

You can pretty much guarantee ~30% drop in mileage on your average compression motor as that's how much more fuel it requires at stoich.

N2OBaby

I had always heard 10-30% decrease in mileage but there is also a decrease in engine temperatures.

I guess it is a tit for tat trade off.

Wicked94Z

iTrader: (26)

i get roughly 7-8mpg as far as I can tell. Speedo doesn't work, but I know my job is 16 miles away. I got to and from work 3 times on a tank...

Egg1456

iTrader: (2)

**** you must be payin out the *** at 7mpg right now

Wicked94Z

iTrader: (26)

it's 3.49/gal in so cal as well... FML. 91 unleaded is 4.15. I don't drive the car much anymore

Spent

iTrader: (1)

X2! And yes, I tune an E85 setup just about every other week.

Wicked94Z

iTrader: (26)

FWIW I've run the E85 (not this motor) at ~1.10 lambda at cruise with good results. On this motor anything less than 4000 rpm is still on the converter quite a bit so I can run it a little leaner down there. Obviously doesn't help the mileage with this gear/converter though. I was getting 13-14mpg with a t56 and the same gear.

Grr

iTrader: (2)

I used to get 21hwy and about 14 town with my 87 buick 6.0L, 76mm, 4l80 and 3.08 gear on E85. On gas it did 18/26 or so if i was very careful with it
Running in standard AFR it was 15.5 at idle, 15.1 light accel and 16.5-16.7 under regular cruise. Under high loads N/A up to 4psi around 12.2:1, at 8psi it was around 11.8, 12psi 11.4

You can run this stuff pretty lean with no problems, that car also ran 26" tire and a 3200 stall