Miles per gal

[Don W.]

I've been using the Sy as a DD lately. 12 mpg. Factoring in my lead foot I suppose that's not bad. Not very good either. About half and half city/fwy. Oh well, it should go "off duty' this week. That's 2.33 times WORSE than my regular DD. :roll:

BTW I know a guy that has a stock Sy and still he toasted 3rd and 4th. Make me wonder what he's doing with the thing.

 

[sae]

Re: Miles per gal

12 seems pretty bad, no? I was getting 14.5-15 with 315/275s, and get low 16s with new wheel/tires on a ty

 

[It's just a six]

Re: Miles per gal

I've been using the Sy as a DD lately. 12 mpg. Factoring in my lead foot I suppose that's not bad. Not very good either. About half and half city/fwy. Oh well, it should go "off duty' this week. That's 2.33 times WORSE than my regular DD. :roll:

.

What is your timing at when cruising & in general overall total timing?

 

[atkonkler]

Re: Miles per gal

I've always got between 12-14 with getting into the throttle occasionally. ...but hey who can resist?

 

[Don W.]

Re: Miles per gal

I'll have to run a cruise log. I've done one but it was a log time ago. Mind you, I'm not complaining just posting for s*(^ & giggles. I'll do a log. Probably worth it to see what's happening there anyway.

 

[stuckinUT]

Re: Miles per gal

When mine was completely stock except for a cold air intake, 3" cat-back, and 2800 stall I would get 15 mpg all city driving when I would occasionally DD it to work in warmer months, but I didn’t get in boost much.

I drove it with those mods for 590 miles on the interstate when I moved, cruise control on 95% of the time at 75 mph and managed 18 mpg.

It now gets about 13 mpg city and 15 mpg highway.

 

[Damian]

Re: Miles per gal

When I was stock and drove it 3000 miles, I was averaging 18 to 20 mpgs. Plug gap makes a difference, at least it did for me.

 

[It's just a six]

Re: Miles per gal

I'll have to run a cruise log. I've done one but it was a log time ago. Mind you, I'm not complaining just posting for s*(^ & giggles. I'll do a log. Probably worth it to see what's happening there anyway.

When I am at a steady state cruise I see approx 15.5 or so A/F ratio, but that is how I set the fueling tables.
I also try & run as much total timing to get the max MPG, I never checked the mileage though, I always get into boost too much.

 

[anryo]

Re: Miles per gal

I get 19 MPG on highway and 16 MPG in the city, with 275/315 tyres and with stock tune, that needs to be updated for my mods actually.

 

[Sy1192]

Re: Miles per gal

I get 14.5 like clockwork.
My truck is all stock.

But I never get any extended highway miles to speak of.
All two lanes or small four lane highways.

I can definitely see where it could shine on the interstate.
My truck cruises effortlessly at 70.

 

[dgoodhue]

Re: Miles per gal

I usually get around 13-14mpg driving a mix of city highway. Sometimes it dips in to the 12mpg if I am fooling around with it. I can get 19-20 mpg on highway if I stay out of boost, but that is a very rare event.

 

[Bullydawg]

Re: Miles per gal

Just calculated out my stock Typhoon. I have DDed it the last 8k miles... This last 200 miles, mainly freeway, I got about 15.5... I was hoping for a bit more, but I guess it isn't too bad looking at the above posts. I drive mostly around 80-85 mph...

 

[jaystcb]

Re: Miles per gal

Let me start with... When I got my Sy i got 8 to 12 MPG. After TunerPro an about a year and a half of tuning. I now get 16 to 18mpg.

Stock internals.
Stock Trans.
Stock cross air tube.
Stock intercooler.
Stock injectors.
3" exhaust with Cat.
20G turbo.

 

[jeepruby04]

Re: Miles per gal

I get 18 to 19 consistently. That's city/highway with a few "runs" thrown in.

 

[Jimmy]

Re: Miles per gal

Even when 93 got up to what? $4.65/gal I never gave a ****.Fun costs $.
Mileage is for hippies.

 

[Jimmy]

Re: Miles per gal

BTW Don,I was just kidding.

I was getting like 18 city/23 highway on a stockish build when I kept my foot out of it,which I never did,so 8/14. Probably and 5-6 broken trans.

 

[Don W.]

Re: Miles per gal

No worries. I was never a very good hippy anyway. Hey, I'm actually doin' pretty good. My old '65 GMC with 394 Olds power and an even worse lead foot probably got less. A lot less. My 1970 2500 Suburban w/454 got 9mpg. Didn't matter what you did. Up hill or down, with trailer or without, 9mpg. I gave up trying make it better.

 

[Don W.]

Re: Miles per gal

What is your timing at when cruising & in general overall total timing?

Timing when cruising runs in the low 30s, AFRs 14-15

 

[It's just a six]

Re: Miles per gal

Timing when cruising runs in the low 30s, AFRs 14-15

That is too low for trying to get mileage out of it.
IIRC, it should be in the 40's, even try it in the 50's unless the engine just does not like it.