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40 MPG "Eco-Corvette"

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Old Dec 7, 2019 | 10:56 AM
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Default 40 MPG C5 "Eco-Corvette"

Not sure if you guys have been following this (note these are not my videos), pretty cool stuff:


Last edited by ArmchairArchitect; Dec 7, 2019 at 11:10 AM.
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Old Dec 7, 2019 | 12:14 PM
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That was really cool to see. I've always been impressed by the MPG that I got from my Z06, I remember getting flipped off by some ignorant dude passing me in a Prius who was apparently offended by me driving what he considered a gas guzzler not realizing I was getting 30+ MPG. I've always wondered what i would get now that it has a 434ci LS2.

Last edited by z06801; Dec 7, 2019 at 12:16 PM.
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Old Dec 7, 2019 | 03:47 PM
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I didn't watch the whole video but in the beginning he is using the DIC mileage which I always find to be reading high in my C5s. In fact, I find my black 99's DIC reading to be 6-7 mpg higher than actual mpg.
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Old Dec 7, 2019 | 04:25 PM
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Originally Posted by knewblewkorvette
I didn't watch the whole video but in the beginning he is using the DIC mileage which I always find to be reading high in my C5s. In fact, I find my black 99's DIC reading to be 6-7 mpg higher than actual mpg.
I would agree that the DIC run a little high but when he did his finally test, he filled the tank. did a 350 mile loop then came back to the same exact pump filled the tank and divided the miles driven by the gallons used, came up with 40.2
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Old Dec 7, 2019 | 08:39 PM
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Originally Posted by z06801
I've always wondered what i would get now that it has a 434ci LS2.
blow their eardrums out
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Old Dec 7, 2019 | 09:47 PM
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The C5 can get some really amazing fuel economy, especially with the 6 speed, and if he can actually get 40.2 mpg from the car, great. I know I could never approach that kind of gas mileage with any of the three C5s that I had.
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Old Dec 8, 2019 | 04:23 AM
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I find the videos interesting. If we go by the dic / mileage, it can be interesting.

I had a 00 6 speed coupe from new back in the day. That car at 65mpg in cruise in 6th I on the highway and normal driving around town would show 36 to 44 mpg Instant on the highway in level travel. I don't recall the average. I tried once to go for high miles per tank and while I remember it being over 400, I do not remember the specific. It often averaged 350+ miles per tank. Bear in mind, those were pre ethanol add-in days so a gas tank made about ten percent more power. Not sure if that translates directly to milage though.

Now on my current 99 m6 coupe in stock form with headers if I try the same cruise conditions the dic reads 33 to 41 mpg instant. I have never tried for most mileage on this one. But best I've seen recently was 367 in a fill up. Not sure how much was left in the tank, didn't calculate.

So seeing this light burn thing on dic doesn't seem too extreme. Cool though.
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Old Dec 8, 2019 | 04:09 PM
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I wish I could have my C5 A4 tuned for lean consumption for cheap, I mostly drive in city at 40-70km/h....and some time on highway at 110km/h...
would save some bucks but probably not enough to justify the cost of tuning...
TCFS
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Old Dec 9, 2019 | 04:51 AM
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Or you could be this guy who thinks you can count instant gas mileage as real. If that were the case my wifes lincoln get 100 instant
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Old Dec 9, 2019 | 08:09 PM
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i didn t buy a corvette for fuel mileage.. smh
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Old Dec 10, 2019 | 12:55 AM
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He did a tune which gave something like 30 horsepower on WOT and it goes into lean burn and AFR goes up to around 17 in certain idle or cruising parameters which allows for high MPG on the highway. As far as downsides, I don't see any other it's not like you're losing power.
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Old Dec 10, 2019 | 07:40 AM
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So how does one do what he did to their Vette? He gets more horsepower and better MPG, I can't see the downsides to this. Does this work on a 07 Tahoe with a 5.3L? It gets horrible MPG.
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Old Dec 17, 2019 | 05:18 PM
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Default Well I’m the guy who bought it last night...

I bought the Eco Vette for 8800 bucks on eBay last night. Flying to Chicago Friday to drive it back. I’ll let you guys know how it does on the drive back to Nashvegas. https://rover.ebay.com/rover/0/0/0?m...2F223788885551


Originally Posted by ArmchairArchitect
Not sure if you guys have been following this (note these are not my videos), pretty cool stuff:

https://www.youtube.com/watch?v=vNIZ25eBMco
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Old Dec 19, 2019 | 12:25 PM
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Originally Posted by Jim Bond
I bought the Eco Vette for 8800 bucks on eBay last night. Flying to Chicago Friday to drive it back. I’ll let you guys know how it does on the drive back to Nashvegas. https://rover.ebay.com/rover/0/0/0?m...2F223788885551
Nice, see if you can do the trip on one tank of gas with that lean-burn mode enabled at highway cruising, then submit the video to Alex so he can post it to his channel as a final hurrah!

Last edited by ArmchairArchitect; Dec 19, 2019 at 12:25 PM.
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Old Dec 19, 2019 | 10:34 PM
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I'd still like to know how I can do this to my 02 Vette and 07 Tahoe.
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Old Dec 20, 2019 | 04:54 AM
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I'm taking a pass..... always looking for more horses, not mpg. Both would be good.
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Old Dec 26, 2019 | 04:05 PM
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Default 367

With the Eco tune the car made 367 hp to the rear wheels at wide open throttle. Better than the Z06 of the same year. So it’s got both! More power and mpg. Car is stock LS1 other than a cat back.
Originally Posted by runner140*
I'm taking a pass..... always looking for more horses, not mpg. Both would be good.
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Old Dec 26, 2019 | 04:07 PM
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Originally Posted by Dukenukemx
I'd still like to know how I can do this to my 02 Vette and 07 Tahoe.
if you’ve got HP tuners I can send you a copy of the tune to look at and copy. Probably wouldn’t help much with the Tahoe because of wind resistance
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Old Dec 28, 2019 | 08:33 AM
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Originally Posted by Jim Bond
if you’ve got HP tuners I can send you a copy of the tune to look at and copy. Probably wouldn’t help much with the Tahoe because of wind resistance
So I need HP tuners? I'll have to get that first. Will the MPVI2 do? I also have Vararam intake on my Vette.
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Old Feb 21, 2020 | 06:00 PM
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PM Sent

Last edited by Sunwarrior; Feb 21, 2020 at 06:01 PM.
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