I've done my fair share of research on both, I have e85 pretty available in my location so that's not an issue with me but wanted to know yall's opinion, and why? which is safer?

 

You might hear differently on here but ideally you want gasoline fuel, and water meth in a 50/50 ratio by mass and injected based on main fuel flow, NOT by boost pressure or any other crap.

This has been proven over and over.

 

any input from somebody who might have experience with both?

 

IMO, I would use E-85 if it is easily available and you wont go on trips.


I will be converting my car for flex-fuel (using the haltech ethanol content sensor) this winter so trips would not be a problem.

 

yeah i recently switched my ecu over to a haltech PS1k and I've been hearing about that sensor.

 

Can u please describe more about this flex fuel sensor and how it works? Sounds very interesting

 

The ECU uses an ethanol content analyzer (flex fuel sensor) to determine the ethanol content of the fuel and the ECU will automatically make corrections to fuel, ignition, and boost settings based on what you program it to do. Just like OEM flex fuel vehicles on the road today.

Haltech – Engine Management Systems » Blog Archive » Sport FlexFuel Sensor Support

 

E85 is safer than pump gas supplemented by water.


gas and AI requires steps in tuning and more experience. both will yield similar results but high boost(25psi+) gasoline and water are not for the amateur where ethanol is much more forgiving.


you just might. i'm not sure who has been proving it to you but i am curious who this mystery source is. Rice Racing perhaps? the most biased person on the planet who once swore by water AI only and then swore by water/methanol(even though water only is still safer). additional complexity and failure points does not scream 'safe' to me, as well as only certain choices of AI systems are semi accurate and results reproducable regularly compared to the fuel injection system.

 

thank you, i've been thinking the same thing.. I dont want add another failure point to the car as there is already enough as it is, lol I was thinking about running 4 ID2000 injectors and twin walbro 485 pumps, does anybody have any experience with the walbro 485 pump? I want to know how reliable they are.

 

I am a big advocate of 50/50. Using a preturbo setup I have put down good power with a relatively safe margin.

Gonna have to agree with Rotary Evolution though. E85, despite it's limitation of pump locations is a safer and a superior fuel. And of course, this limitation depends on where you live. The cooling abilities and octane rating of ethanol are awesome. And as mentioned it's one less system to maintain.

Much of your decision should be based on power goals.

 

What about both?

 

I have never seen E85 in all my life, traveling New England and flown into Florida. With that being said... I wouldn't choose a fuel source that isn't wide spread for a daily driver. If you trailer it anywhere, make sure that tank is filled before leaving town!

Gasoline and water on the other hand... You can get those anywhere.

 

His goals are around 400hp. He is really over thinking his setup. I talk to the op almost daily debating this subject. Im a water/meth, pump gas guy. I would love to switch to the corn liquor.... but its not readily available where I live. I keep telling him a well setup system and good products on either side of the page can eild the same results. His main concern is trying not to blow his motor. He can run pixie dust daily and still blow his motor. Lol.

I agree on all safe guards. My hsf3 is set up in conjunction with my eboost2. If it doesnt spray, my boost stays at wastegate pressure. Its also set up on injector duty cycle. I run 16psi/450hp, 20psi/500hp, and 23psi/550hp, all on pump gas and meth, (boost juice). Original poster just needs a great tune and keep everything on the car in good running order.

 

how people can put so much money into engine builds, turbos, fuel system, etc and NOT have the ability to switch tunes from E85-unleaded is beyond me?

 

E85 and also run a fuel sensor to automatically dial back boost if running 93. filling up a separate water/meth tank is a PITA, and the setups are overly complicated and introduce too many points of failure. I have water injection kit installed, im thinking about ditching it for an E85 sensor myself. E85 stations are getting more common too

http://e85vehicles.com/e85-stations.html

 

Yeah i wanted to do that haltech flex fuel sensor.

 

What part of FL? It is available at nearly every stop on the turnpike and I have seen a few stations with huge signs for E85 randomly placed in Miami.

 

e85 is tricky because its blended differently and using a drum to keep octane constant is recommended, and requires substantial fuel mods. 1000cc injectors+

Meth is always good but would use a 100% and only as a safety precaution not for any additional hp requirements.

 

I have the mechanical preturbo water/meth injection. Its a simple kit that has very few failure points, its driven by turbo boost and a solenoid releases the mixture, the only way I see this setup failing is if the turbo fails aka stops spinning honestly if that happens, I have bigger problems to worry about. My friend has a 1000+ whp supra that runs on e85 and has the flex fuel sensors. In our area, e85 isn't readily available so he's literally stuck on 93 unless he buys drums of the stuff from out of state...in my opinion way too much stuff to worry about and do just to run the car's full potential. I like the simplicity of my setup over his and would take it every time.

 

the other problem with e85 is if you have to premix, normal oils wont work

 

no biggie, i premix anyways, and i know there's certain premixes that actually mix with e-85 which is klotz benol and castor 927, klotz benol is pretty decently priced from what i researched.