turboglenn
15+ Year Contributor
- 6,375
- 111
- Nov 5, 2007
-
RIpley,
West_Virginia
Well, i used my trip to KC to test pure highway MPG on E85 on the way there, and knowing i wouldn't find it where i was for the trip home i took the latop so i could map the new 1000's out on pump fuel and see what i could get out of them. ( I've never ran pump gas since getting the 1000's)
I filled up on E85 less than a mile from the interstate. I got on the interstate and headed to KC (supposed to have been non-stop) I had to deal wth a few miles of slow rush hour traffic (20-30MPH for about 4 miles) and then when the car broke the Alt belt outside of saint joe it was pretty much shut off and left off till i got new belts on and resumed highway speeds. Then i finished the trip to the hotel.
We made less than 5 miles of in-town driving while in KC and that was looking for gas to leave on (we stayed in a hotel right by the park and interstate so we didn't need to drive much) I got right at 200miles from 11.197 gallons This equals only 17.8 MPG!!!!!!! JESUS THAT"S LOW! Especially for 3 hours of straight highway.
On the way back i added those 11.197 gallons of 91 octane to the remaining total of what was in teh tank ( i think it holds 13.7 IIRC, i'll have to look in my other thread where some one posted tank capacity)
The ride home was non-stop, 198 miles and i used roughly 7 gallons of pump fuel, that equals just a slight over 27MPG highway!!!! Wow! i never expected there to be that much difference in long highway pulls, i expected minimal differences, seriously. I only had about a 2MPH change in in-towen driving at most, barely noticeable at all and made it well worth the extra consumtion for the price of it being so cheap. But on the highway i think i will always use pump gas and just have water injection ready if needed for higher boost/timing situations. In town on pump i average between 16 and 17MPG, on E85 i average about 14-15 MPG.
Please post what you have noticed/gotten on either fuel and please try adn keep it ALL highway and ALL in-town numbers only please. Mixing the driving doesn't give good results (in-town really doens't either, but i interested in your numbers as well)
I'm mainly interested in non-stop highway runs where the whole tank or at least a majority of it was burned at one speed non-stop
Funny little side note/story... NOT TOPIC RELATED. I had checked the timing mark on the pulley this am becauise of my fiasco with the damper coming off shredding the belts on my trip and the cruise method in which i re-installed it. You lock the timing through the software in the haltech to set base timing, i had it locked at 10* BTDC. Well the timing marks were okay so i shut off the car, unplugged th haltech and put the laptop away.
Well while at the circus today i ran into an long time friend and ex-DSM'er ( had a 91 talon TSI for a while) We needed a part for his car because when he came over i noticed he had a vacum leak and the car was running badly. I offer to drive him to O'reilly's in my mitsubishi and give hima tase of boost but for some reason when i layed into it the car just fell on it's face, built boost and just didn't go anywhere. I tried getting in it a few times and was just shocked at how slow my car felt, even part throttle loads werew awefully dogish and i was ashamed of my car, litterally!.
So as we're driving I asked myself "Is this just because pump gas sucks?"
Thejn it hit me... "No dumbass it's because you've got the timing locked at 10* BTDC!!!" had a good laugh on myslef.
Moral of the story...Even when you think you're doing something simple that you've done a thousand times and couldn't possibly screw up, make sure to slow downand double check yourself because you're going to miss something every damn time, but on a mtoor rebuild you'll remember every last bolt, zip tie and drop of locktite
I filled up on E85 less than a mile from the interstate. I got on the interstate and headed to KC (supposed to have been non-stop) I had to deal wth a few miles of slow rush hour traffic (20-30MPH for about 4 miles) and then when the car broke the Alt belt outside of saint joe it was pretty much shut off and left off till i got new belts on and resumed highway speeds. Then i finished the trip to the hotel.
We made less than 5 miles of in-town driving while in KC and that was looking for gas to leave on (we stayed in a hotel right by the park and interstate so we didn't need to drive much) I got right at 200miles from 11.197 gallons This equals only 17.8 MPG!!!!!!! JESUS THAT"S LOW! Especially for 3 hours of straight highway.
On the way back i added those 11.197 gallons of 91 octane to the remaining total of what was in teh tank ( i think it holds 13.7 IIRC, i'll have to look in my other thread where some one posted tank capacity)
The ride home was non-stop, 198 miles and i used roughly 7 gallons of pump fuel, that equals just a slight over 27MPG highway!!!! Wow! i never expected there to be that much difference in long highway pulls, i expected minimal differences, seriously. I only had about a 2MPH change in in-towen driving at most, barely noticeable at all and made it well worth the extra consumtion for the price of it being so cheap. But on the highway i think i will always use pump gas and just have water injection ready if needed for higher boost/timing situations. In town on pump i average between 16 and 17MPG, on E85 i average about 14-15 MPG.
Please post what you have noticed/gotten on either fuel and please try adn keep it ALL highway and ALL in-town numbers only please. Mixing the driving doesn't give good results (in-town really doens't either, but i interested in your numbers as well)
I'm mainly interested in non-stop highway runs where the whole tank or at least a majority of it was burned at one speed non-stop
Funny little side note/story... NOT TOPIC RELATED. I had checked the timing mark on the pulley this am becauise of my fiasco with the damper coming off shredding the belts on my trip and the cruise method in which i re-installed it. You lock the timing through the software in the haltech to set base timing, i had it locked at 10* BTDC. Well the timing marks were okay so i shut off the car, unplugged th haltech and put the laptop away.
Well while at the circus today i ran into an long time friend and ex-DSM'er ( had a 91 talon TSI for a while) We needed a part for his car because when he came over i noticed he had a vacum leak and the car was running badly. I offer to drive him to O'reilly's in my mitsubishi and give hima tase of boost but for some reason when i layed into it the car just fell on it's face, built boost and just didn't go anywhere. I tried getting in it a few times and was just shocked at how slow my car felt, even part throttle loads werew awefully dogish and i was ashamed of my car, litterally!.
So as we're driving I asked myself "Is this just because pump gas sucks?"
Thejn it hit me... "No dumbass it's because you've got the timing locked at 10* BTDC!!!"
had a good laugh on myslef.Moral of the story...Even when you think you're doing something simple that you've done a thousand times and couldn't possibly screw up, make sure to slow downand double check yourself because you're going to miss something every damn time, but on a mtoor rebuild you'll remember every last bolt, zip tie and drop of locktite
Just thought i'd throw that in here too since it's an ethanol vs. pump thread. I mean at the same boost i honestly feel like I'm losing about 30 horses at the same boost level on pump 
I know I'm running less timing, but there's a definite benefit to that E85 over conventional fuels that i can't quite put my finger on other than the timing gains.
) and just roll. Ignition timing is very similar to a 1g map at cruise. I believe that I am seeing 35 degrees at cruise. I think one good thing is that my o2 correction is always within 2-3% so it is a steady consistent 16.2 afr assuming it doesn't make it up into the 100 kpa bins (0 vacuum) where it is roughly 15.7 afr. I would say that megasquirt has little to do with it. This car got 30+ on the stock ecu when the car had just intake and exhaust.
