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Location: Reno NV, Bay Area during most weeks,, Kids still in NH
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another EFI question

I didn't want to hijack another thread on this. so I only have one question for you EFI guys, What kind of gas mileage do you get. I just talked to a fellow pelican in my neighborhood that has a 3.6 conversion and he got 28 mph on a recent trip,, Any reason ( assuming we stay off boost) that we can't get that?
T
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"Todd"
98 Tahoe ,2007 Saturn Vue
86 930 black and stock, 80 930 blue tracdog
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Old 07-15-2007, 04:13 PM
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Todd,

When I had CIS I was running a little lean and I got 13.7 MPG average all around mileage. With EFI running a little rich I get 15 MPG.
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Dean
911 SC turbo, 3.0L 930 motor, G50, 930 brakes, DTA EFI, 352 RWHP DynoDynamic dyno,
Old 07-15-2007, 05:18 PM
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If it is possible EFI is the way to do it. However, it is only academic. EFI will cost more than you will EVER save in gas. Also, planning on keeping it out of boost is silly. Why buy a turbo if you are not going to enjoy boost?
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Crashed: Silver 1992 Turbo S2
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Old 07-15-2007, 05:22 PM
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Quote:
Originally posted by DRV2FST
If it is possible EFI is the way to do it. However, it is only academic. EFI will cost more than you will EVER save in gas. Also, planning on keeping it out of boost is silly. Why buy a turbo if you are not going to enjoy boost?
Well that's not totally true... It would be nice to be able to go somewhere without 10-12 mpg.. I get close to 20 mph with my 86 turbo ( ok so it goes down to about 8 on the track)..
T
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98 Tahoe ,2007 Saturn Vue
86 930 black and stock, 80 930 blue tracdog
91 Spec Miata (yeah I race a chick car)
"life"ll kill ya" Warren Zevon
Old 07-15-2007, 05:26 PM
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I have CIS and it is on the rich side. Just poking around town it is around 20 mpg... I've only been through one tank so far, so I'll know more on this later.
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82 Porsche 930 Euro, black, 31K miles.
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Old 07-16-2007, 03:53 AM
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I have no numbers post EFI. But my CIS Car ran 9-10 MPG in Town and 23-25 MPG Pure HWY at 65 MPH. My suggestion here among others is most of you probably don't drive the car 800 miles a day on the highway to gert accurate Road numbers. My experience was every couple MPH above 65MPH started nibbling pretty heavy on the MPG. One of the problems with a 930 is who can cruise it at 65 MPH for 400 miles or so. I used to do this type of driving to get to a remote work site. I had to avoid attracting the State Police and it was in the 55 MPH days. The DEVIL beckons, it is hard not to want to BLAZE up an on ramp, or squirt past a car. My car at that time was a EURO 930 with all federalization stripped off and in a good state of tune. I experienced a car that Guzzled Gas in town and sipped it on the road. My .02.

Les
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---Les Garten---85 930, Andial IC, GHL Headers, Fabspeed Dual, K-27 HF2, 3.4 JE Full Finned 7.5:1 CR, 964 CAM'd, Carerra 3.2 Manifold Cut/Flipped, Tec3r, Siemans 55#, GSF Fuel Rails, Clewett Crank Trigger, Clewett Cam Trigger,Dual Plugged, ARP Head Studs/Rod Bolts, Clewett Wires.Tial 46mm WG, Tial 50mm BOV, WEVO Shifter,934 Boost Gauge, Wideband EGO Sensor/Gauge, C2T Head Gaskets, '88 MB 300TE,BMW R100RT
Old 07-17-2007, 07:32 AM
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Quote:
Originally posted by les_garten
I have no numbers post EFI. But my CIS Car ran 9-10 MPG in Town and 23-25 MPG Pure HWY at 65 MPH. My suggestion here among others is most of you probably don't drive the car 800 miles a day on the highway to gert accurate Road numbers. My experience was every couple MPH above 65MPH started nibbling pretty heavy on the MPG. One of the problems with a 930 is who can cruise it at 65 MPH for 400 miles or so. I used to do this type of driving to get to a remote work site. I had to avoid attracting the State Police and it was in the 55 MPH days. The DEVIL beckons, it is hard not to want to BLAZE up an on ramp, or squirt past a car. My car at that time was a EURO 930 with all federalization stripped off and in a good state of tune. I experienced a car that Guzzled Gas in town and sipped it on the road. My .02.

Les
+1
I monitored my mileage when I moved back to Wisconsin from Boston. It averaged 17MPG when driving a "steady" 65-70MPH. Next tank I would push 80 MPH and mileage would drop considerably. I could probably get close to 20MPG if I had the standard ring and pinion gear set....

Engine Features:
Twin plug-crank fired
B&B Headers/muffler
K-27 7006 turbo
SC Cams
and .....285x17 tires(rear) 235x17(front)
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'85 930 Factory Special Wishes Flachbau
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Old 07-17-2007, 07:53 AM
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