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Topic Review (Newest First)
11-18-2012 03:20 PM
Originally Posted by turbosvtfocus04 View Post
If e85 isn't higher octane then what is ethanol and methanol Tom? .
I have said this many times before , you get the performance gains from eth / meth from the cooling effect of the charge NOT the octane , with a cooler charge you can run more timing in most cases more timing = more TQ , problem is at some points you get lousy octane e85 and its all over even with the cooler charge

11-17-2012 05:41 PM
enginjoe Maybe the higher humidity up there causes the issues, but down here E85 rules. I was just in a group conversation with one of the best LSx tuners in the country, NicD (who also tuned my SS), and he said E85 will make a little more power than C16.
11-17-2012 05:36 PM
turbosvtfocus04 If e85 isn't higher octane then what is ethanol and methanol Tom?

Also down in the south, more like Arizona, they have 85-100% ethanol in there pumps. Now if you came to the mid-west or anywhere that has very cold weathers, the ethanol content is going to change in the fuel mixture at the pumps.

I talked to my buddy that lives down in Arizona and that's why they can run e85.
11-17-2012 05:27 PM
1turbofocus You saying my lack of knowledge on the subject makes me laugh , I have given you many reasone why not to use e85 and that e85 isnt used because of it higher octane or lack there of , I dont know what else to say to you other then if your happy with it then go for it

An old friend said "if it makes you feel better use it" good luck

11-15-2012 12:04 PM
Iguy93 Basic chemistry lesson here. E85 (ethanol) is a polar molecule. Many of the tubes and hoses in a car are also composed of polar molecules. Using the rule "likes dissolve likes" you will understand that the E85 will disolve the hoses in an attempt to become homogeneous. Even E85 ready cars have problems eventual. In addition you get decreased fuel economy and all the other things listed before me. So don't do it!
11-14-2012 04:00 PM
enginjoe I do all my own wrenching, but I get tuning done by the pros. I've had enough school getting a Bachelor's and a master's degree in Engineering, so I'm sick of that kind of thing. I'm not going to spend all that time learning some specialized software just to tune my own junk and I don't need or want a job doing that.

I know many tuners from my time on other forums. They have tuned un-counted numbers of EFI cars on E85 and other fuels. Maybe you should surf some of the other forums because I'm guessing from your lack of knowledge on the subject that maybe you spend too much time here. Maybe it's because I live in a po-dunk tcwn in az, but there aren't that many high performance focuses around and the ones that are considered high performance are slow by most people's standards. I know I've never seen one I'd consider fast. My fast cars are just run of mill, nothing special compared to what the real go getters are doing on the forums or in the car magazines. A 500whp srt-4 or a 800whp turbo SS is no big deal anymore because tons of people have already done it and then some. I rode in a nitrous'd focus once, then took the guy for a ride in my stock turbo with some mods SRT-4 and he sold that slow pos soon thereafter and got an LS1 camaro. Go to srtfourms, LS1tech, evolutionm, nasioc, etc., the info and all the good tuners are all there.

One last thought: You don't have to be a chicken to know if an egg is bad.
11-14-2012 03:07 PM
1turbofocus May I ask how many engines EFI you have tuned ?

11-14-2012 12:04 PM
enginjoe Yes, E85 is only good for FI or high compression engines as far as performance goes. Also, a good tuner can fix the hard start issues unless you are talking about sub freezing temperatures.
11-14-2012 11:01 AM
Fernando_221 In my country we have 100% ethanol fuel, 93oct and 100oct gas.
We have some cars that run e100 from factory and those cars usually have 12~13:1 CR. Unfortunatelly we don't have an e100 version of Duratec.

All modified cars here (FI and NAs) run e100, very very few run gas.

I started (Tom's tune) to tune my Focus with e100, 30lbs injectors were needed. As expected, the car gained good power, a lot of torque from botton to high rpm.
Cons were, the guy from gas station was becoming my friend lol, cold start is bad, have to turn the key 2... 3 times to start, and wait at least 2 minutes until I can start moving the car. So, I went back to 93oct.
I think with 10:1 CR it's not worth to run e100. With a 13:1 CR engine it would be much better, would improve mileage and make more power.
11-11-2012 12:07 PM
Originally Posted by gimmemoreboost View Post
Sure the systems fail when people are stupid and don't check their system, or, as you said, if they're stupid and they run out.

If you keep an eye on the system and make 100% sure you set it up properly, the odds of it failing and blowing your motor are slim.

Tuning on the bleeding edge with meth is a little crazy, unless you have the funds to fix the motor or a spare motor somewhere. But that's how tuning is regardless of meth. You tune for the bleeding edge and you run the risk of something failing and blowing the motor up. That's performance. You risk shit everyday.

As I said last time we had this discussion, chris johnson of sct told me that he tunes for meth injection. One of the most highly regarded tuners in the country, if not the world. So, you do what you want, but tuning for meth is necessary or there is no point in running it at all.
Beating on your chest about chris johnson doesnt do much for me , water meth cools the charge and it can do that with out tuning for it , use it as a safety add on not for performance , if you need more power then add 1-2psi more boost , if you have a proper size intercooler for the boost your running then you chouldnt need to add WM to cool the charge , WM has HUGH benifits with out tuning for it

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