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Has anyone done an E85 Tune on the 460s I wouldn’t mind doing it honestly especially since where I am at in California. Gas prices are $4.50 for premium 91 and E85 is $2.70... like wow come on now.
That's the same price per mile, ask consider that the direct injection system will not like that much ethanol and the injectors are very expensive and potentially difficult to replace.
I do not believe injectors will be harmed in any way by switching to a lower grade fuel. Overall performance is a different issue. As somebody who replaced injectors in the past, I can say that it is not hard or expensive if you go with used ones.
I read somewhere, you will get a check engine at some point if you keep running none-premium gas. And maybe some engine knock.
I think what he was saying is the fuel injectors will have to be the proper size in order to run that much ethanol. Fuel lines, injector o-rings/seals may need to be changed out. Also, fuel pump/fuel regulator may be required. It's a whole different process to run E85 properly.
I think what he was saying is the fuel injectors will have to be the proper size in order to run that much ethanol. Fuel lines, injector o-rings/seals may need to be changed out. Also, fuel pump/fuel regulator may be required. It's a whole different process to run E85 properly.
Interesting, I will need to read about the issue more as I can see that I lack certain knowledge to have a proper discussion.
I do not believe injectors will be harmed in any way by switching to a lower grade fuel. Overall performance is a different issue. As somebody who replaced injectors in the past, I can say that it is not hard or expensive if you go with used ones.
I read somewhere, you will get a check engine at some point if you keep running none-premium gas. And maybe some engine knock.
This is not a matter fuel octane/premium or not being required for the engine like 87 vs 93, this is a matter of using a fuel that has massive amounts of alcohol content.
If you remember due to alcohol being hygroscopic it tends to cause massive corrosion problems in a fuel system that's not very specifically designed for it. Even if a system is designed to handle ethanol or alcohol fuels all the metal components and rubber components still were out at a faster rate and can cause massive damage. You also need to remember the 1UR is a nearly 12:1 compression ratio engine with DI that is very specifically tuned to be used with fuels that have a very particular range of energy content, E85 has far less energy per unit than even 110 octane gas and is harder to ignite as well.
I would suggest not attempting it unless you replace everything to parts that are alcohol rated and have true tuning ability to correct injection timing for the DI system. Look up DI injection timing to understand why not just amount of fuel but also when and how it's injected is critical for not blowing the engine up. It's not the same as a port injected engine
I think what he was saying is the fuel injectors will have to be the proper size in order to run that much ethanol. Fuel lines, injector o-rings/seals may need to be changed out. Also, fuel pump/fuel regulator may be required. It's a whole different process to run E85 properly.
There are actually a ton of UR engines (LS/GS460, ISF, RCF, GSF)running E85 blends on the stock fuel system, and I know of one LS460 running full E85 with stock fuel system and the sector7 tune. They've been doing it for YEARS without issue. A tune would help but isn't necessary because your only looking for cheaper fuel, not performance. You'll be fine running a blend. I run a E30 blend every other tank in my 460.
There are actually a ton of UR engines (LS/GS460, ISF, RCF, GSF)running E85 blends on the stock fuel system, and I know of one LS460 running full E85 with stock fuel system and the sector7 tune. They've been doing it for YEARS without issue. A tune would help but isn't necessary because your only looking for cheaper fuel, not performance. You'll be fine running a blend. I run a E30 blend every other tank in my 460.
Well that's good, I would have been worried they would have lack of fuel issues due to the increased demand. How much flow headroom is there on the stock parts? 50%?
There are actually a ton of UR engines (LS/GS460, ISF, RCF, GSF)running E85 blends on the stock fuel system, and I know of one LS460 running full E85 with stock fuel system and the sector7 tune. They've been doing it for YEARS without issue. A tune would help but isn't necessary because your only looking for cheaper fuel, not performance. You'll be fine running a blend. I run a E30 blend every other tank in my 460.
No skin in the game here and am not well versed in E85 and Flex Fuel Vehicles. But for the sake of keeping a level playing field (and because OP specifically stated E85), it should to be clarified that anything between E10 and E85 is a blend in order to yield a certain ethanol percentage, although in some places (nearer to where ethanol is produced I believe) E15 or other variations can be found at the pump. I've read that it is vehicles manufactured before 2000 or 2001 that usually have issues running ethanol fuels.
Very interesting about that 1 LS460 using full E85, so many questions. Like how long running full E85 continuously and what parts, if any, were changed out, upgraded, etc. Running E30, it that the point where diminishing returns set in and cost became a factor with a decrease in mileage? Thanks for the info brother!
If it's Robert's red LS460 running the tune and E85, I saw where he posted a 13.82 1/4mile. And it states diff swap, and I believe it's full custom exhaust with no cats. For comparison, my '07 LWB is completely stock except for the Red Bullet oil cam solenoid valves. After installing them, I made 6 or 7 runs with my best being 13.92 (my goal really was to just get into the 13s) and have yet to do any runs since switching to wider rear tires.
Well that's good, I would have been worried they would have lack of fuel issues due to the increased demand. How much flow headroom is there on the stock parts? 50%?
I'm not even sure what the stock fuel pump is rated for, but you need at least 30% headroom to run full E85 right?
If it's Robert's red LS460 running the tune and E85, I saw where he posted a 13.82 1/4mile. And it states diff swap, and I believe it's full custom exhaust with no cats. For comparison, my '07 LWB is completely stock except for the Red Bullet oil cam solenoid valves. After installing them, I made 6 or 7 runs with my best being 13.92 (my goal really was to just get into the 13s) and have yet to do any runs since switching to wider rear tires.
His 13.8 run was done on 93 and with the stock differential according to his Dragy post. Its also important to note that he's running 21 inch wheels. I bet they weigh the same or more than the stock wheels and your engine has to work harder with the mass further from center, so he's at a disadvantage.
His 13.8 run was done on 93 and with the stock differential according to his Dragy post. Its also important to note that he's running 21 inch wheels. I bet they weigh the same or more than the stock wheels and your engine has to work harder with the mass further from center, so he's at a disadvantage.
Not so according to the comments from him: "Car has 4.08 Diff swap and E85 now, Will have to do another run but hoping for 5.0 flat or less."
"You run straight e85? Yes, Tuned for it."
As for the wheels compared to my 19s, what are we talking about in total weight difference, 40-45lbs?
06-04-21, 09:47 PM
LS460 E85 tune?
