MPG on a CIS

[cab83_750]

There was a "3.2 MPG thread" and it appears that the Motronics get better MPG.

MIKE635 supposedly was getting 27MPG on his CIS.


I get 19 MPG on my '83 CAB with SSI. BTW, before the SSI and before fuel enrichment (when it was stock) I also used to get around 26MPG.

What do you guys get?




P.S.,

How many gallons does a factory '83 SC tank hold?

Thanks.


W

[DARISC]

16 mpg or so punching it around town. Got 25 once w/windows closed on freeway at sustained 80-90 mph. I also have SSIs. 20 gal. gas tank. Yeah, Carreras get mo betta mileage but don't have the fun throttle response of CIS .

[DaddyGlenn]

I average 15 mpg on mine. But my right foot weighs 1,000 pounds.

[DARISC]

Originally Posted by DaddyGlenn

I average 15 mpg on mine. But my right foot weighs 1,000 pounds.

Oh, I know! I bought the damned car for fuel economy - boy am I disappointed!!

[1982911SCTarga]

I get 27-28 mpg on the highway with my bone-stock SC (that's a lot of range on road trips). I've never bothered to try to get a measure for around-town driving.

Brian

[burgermeister]

Originally Posted by cab83_750

There was a "3.2 MPG thread" and it appears that the Motronics get better MPG.

For the record, I get a pretty regular 21-22MPG with my bone-stock 3.2 in mixed, but predominantly freeway, driving ... not sure how the 28MPG crowd accomplishes their task.

[DaddyGlenn]

Originally Posted by DaddyGlenn

I average 15 mpg on mine. But my right foot weighs 1,000 pounds.

p.s. mine is a RoW with SSI's Perhaps there is a difference in the US version?

[RoninLB]

on freeway at a constant 70 mph with old CIS & 2.7 was 25-26 mpg.

same routine in a stock '88 3.2 was 24-25 mpg.

[holtjv]

I get 15-16 around town (thanks for making me not feel bad, DGlenn). I have gotten 24 highway at constant 70mph but that was with airpump and cat installed but really, really lean--which I've of course fattened up since then.

[acapella8]

I get about 16mph too. ROW with SSI's as well. Rock on.

[Rick V]

20 mpg, all stock with the exception of a test pipe.

[DARISC]

Originally Posted by DaddyGlenn

p.s. mine is a RoW with SSI's Perhaps there is a difference in the US version?

Yeah! Like 9.8:1 cr & 20 hp more than U.S. spec.? (33 hp more w/SSIs & sport muffler).

[cantdrv55]

16 mpg in combined driving. I've owned my SC for almost five years now and its fuel efficiency has been the same throughout.

[vash]

honestly, my car is all over the place. one time, driving to thunderhill, i was following another pelican. we had a day of tracktime planned and we were hecka early. therefore we both just putted along. no faster than 65. i filled up when i left, and at the chevron by the track, i calc'd 33 mpg. i was stunned and so was my buddy. at the track i got 13! hehehe. i typically get 18 in combined driving.

[Dave Nordhoff]

25 highway and 10 at the track in my 80 SC.

Dave

[dan79brooklyn]

I got about 20-24 in my '79 SC. Getting a few more MPG with the C2 but it runs on Premium!

[DaddyGlenn]

Originally Posted by DARISC

Yeah! Like 9.8:1 cr & 20 hp more than U.S. spec.? (33 hp more w/SSIs & sport muffler).

I was thinking more along the lines of the mileage. Do the weaker US versions get better mileage?

[osidak]

when i first got it I saw 24 to 26 mpg - then added ssi's and an oe sport exhaust and advanced the cam timing a hair and it is around 18 if I mostly behave. Seen it dip as low as 14 on spirited driving days

mine is a ROW car as well

[petrolblue83911]

straight highway I get mid to upper 20's, stock motor cis, with ssi's/exh bkdate. city/overall average I'd estimate 19-21

[overman]

Checked my SC while returning from RennSport Renuion III... averaged 25.6 @ 75-80 MPH north bound I-95. 1st time I've logged the fuel mileage... purchased the car in May 98.

Wayne.