Thanks, the mileage loss I can deal with; however, I can't deal with any performance compromise such as power loss. I have the 21CMC heads and cam package and I want to exploit it to its fullest. So if using ethanol enhanced gas robs me of power I'll stick with the 92 octane I can readily find at local BP stations.mgarfias said:Well... I've only had the opportunity to use 91octane gas with ethanol. It sucks. On 93 you should be ok, though your milage will get a bit worse.
E10 has about 96.7% heat energy as gasoline which is what gives you 3% less fuel mileage, and will also take about 3% hp from your engine.roushraven said:Thanks, the mileage loss I can deal with; however, I can't deal with any performance compromise such as power loss. I have the 21CMC heads and cam package and I want to exploit it to its fullest. So if using ethanol enhanced gas robs me of power I'll stick with the 92 octane I can readily find at local BP stations.
I read through a string of old threads and couldn't find anything conclusive about the effect of 10% on engine power so I if any of you have experience using it please chime in.
I am no expert but I think Ethanol has less energy per volume than gasolene. If you throw ethanol in a car that is not setup for it you will make less power. The benefit is that ethanol is much less likely to detonate....IE, great for forced induction and higher compression ratios. Maybe you can make up for power loss from using ethanol by running a higher compression ratio, more timing, more boost, etc: but you will not make more power by adding it to our current cars.Tomas Danilsons said:I Sweden the E-85 blend have been popular in the last year. They sell a lot of cars tuned for that fuel. The benefit is that you get a lot of high oktan. This gives you the oportunity to reduce the timing and with a 350" na engine you can get about 10% hp more. With turbos a lot more. SAAB can get a normal 250 hp 2.3 l turbo engine to produce 310 hp! Well that´s a nice number if you think bigger cubes. Miles/gallon will of course rise.
Like Wes said, I have also have been running on E10 for the past 2 months. At just about the same time the switch to E10 was made I replaced my plugs and got a minor A/F tuneup. Over the past few weeks the engine has become more difficult to start so yesterday I took it in for a look-see and we found all of the plugs to be corroded and whiteish [ is that a word : ]. Coincidence? I don't know but we changed plugs again and checked the tune and all looked correct. Our current thinking is that with E10, we may need to switch to a colder plug. We plan to watch it a bit more closely for a few weeks and see if the condition is repeatable.WA 2 FST said:we've had E10 in our gas here in the DFW area for the last 2 months. I've filled up all 4 of my vehicles several times at least and not seen any noticeable differences in performance. I haven't changed the tune, either.
Rippied.Z06 said:10% ethanol 92 octane gas is all we generally can find in Minnesota. I've had no issues with it in my '04 and it dynoed 366 rwhp and 361 rwt with just a tune.
I noticed almost no change on hiway mpg, but the short urban cycle seems to have taken a beating - and I make a point of short shifting and even oing 1st to 4th and 5th manual skip shifts these days, seldom over 2000rpm, and mostly in 5th and 6th whan I can.Rippied.Z06 said:My car has never so much a hicupped from the ethanol blend. I wish I didn't have to run it, but it hasn't been so bad. Last highway trip with cruise set at 75 mph, I got 28 mpg. It can't be costing me much in fuel economy.