SuboobaruWRSEX

iTrader: (3)

I have been getting crappy gas mileage lately, between 18-21 mpg a tank with mostly highway driving. Staying out of boost as much as possible. Was wondering if putting the DCCD in 35/65 instead of auto would help?

Nick

dashiet

iTrader: (2)

i think its all the same, it just depends on how your driving, and it may just be ur mind thinking that you get better gas mileage. but 18-21 is pretty good, i dont like 240 max per full tank. which is like 14mpg? i dont drive that hard... i drive mild most fo the time
-dashiet

SuboobaruWRSEX

iTrader: (3)

I havnt done it yet, just wondered if anyone did or had any info. Most of my driving uses cruise. Get like 240 max.

Nick

Kevin M

iTrader: (12)

If you hop on hte freeway and drove at 65-70 until you ran out of gas, you wouldn't get much more than 25-27 mpg anyway. The STi is not an economy car. 18-21 is on the high end of most 300 hp cars, so don't complain too loudly. Just a little grumbling is called for.

stott

iTrader: (2)

I agree this isn't an economy car, but with my Z28 I would get about 32mpg highway. Around town was about 16 since I never get off the gas.

With the STi I get about 15 around town and I drive it a lot more conservatively. I haven't paid attention on long highway trips.

I did think the 2.5L engine when not boosting would get better mileage than it does. Not that I care I run a race gas mix in this car anyway. I was just surprised was all.

SuboobaruWRSEX

iTrader: (3)

Before I put a new fuel system in the Grand National it was pulling much better gas mileage than the STi is. The GN is heavier, 2 more cylinders, automatic, and it dosnt know what aerodynamics is. Gonna try the 35/65 split on the highway tommorro and see what happens.

Nick

dashiet

iTrader: (2)

lol its kind of hard to hold a steady speeed of 65-70.

Kevin M

iTrader: (12)

Your Z28 was turning about 1900 rpm on the freeway and running quite lean, compared to the STi running 3300-3500 rpm and running rich. Even my 2.5RS only gets a max of about 28 mpg on the freeway.

stott

iTrader: (2)

True, I miss that beast. I should have kept it as well as the STi. I think Shiv leaned out the STi some when he tuned it but I doubt it will help my mileage at all.

insaneSTi

I got 28mpg at 75mph on cruise control on my way to E-town. I've recently discovered putting the diff in open mode also helps quite a bit so i expect to get 30mpg on my next trip down.

SuboobaruWRSEX

iTrader: (3)

Using 35/65 I have noticed much more mileage to a tank. I just got 285 miles out of one. That included some full throttle runs too. It took 13.8 gallons to fill it back up. 300 miles per tank should be relitivily easy with the 35/65 set up. Oh, its still cold as fu*k here. So warmer temps should see better mileage.

Nick

Seraph

He just asked if 35/65 would help, not being astonished at his gas mileage....i'm pretty sure we all knew it was gonna suck when we bought it, just wondering if changing the bias would affect it one way or another.

I'm kinda tired of people calling it a race car/rally car/drag superstar

I don't drive it like a race car, stay out of boost most of the time should yield lower gas mileage than a 4.3 liter v8 (friends' C43 amg) but it doesnt, even with almost half the displacement, so there's bound to be some curiosity, trying to squash the discussion with a comment like that doesn't help anyone.

SuboobaruWRSEX

iTrader: (3)

Generally use 93. Lowest I go is 92, once in a while 94 makes its way into my tank.

Nick