Hi I was woundering what I need to do to my car or parts replaced to get my car tuned on e85 and can I get it tuned useing chrome or do i need some like hondata. Thankyou

 

Crome doesn't have the resolution to run E85. For best results you'll need to research the folllowing topics

*Flex fuel aensor
*Larger fuel lines that are Ethanol resistant-lined Stainless steel
*E85 compatible fuel pump
Larger EV14 styled high impedance injectors (1000cc+)
*Better tuning software

And of course, a better tuner

 

I can't stress that enough. Don't deal with a lazy tuner that is only concerned about getting you in and out of the dyno like some drive thru window...just for the quick $$$. Cold start along with other features were never adjusted in mine

 

why would I need a flex fuel sensor I dont wanna run 2 different fuels and why do I need 1000cc+injectors I'm running a 12.5:1 compression ls vtec. I thought 600cc

 

You'll need a flex fuel sensor to monitor the ethanol content per tank as it *could* vary seasonally between about 50-85%.. Without this, you will have to test EVERY batch of gas you put in your tank to verify. The flex sensor just makes it easier to watch on the fly. 600cc injectors are NOT gonna cut it for any real power on ethanol, especially if you're looking to make 300+ to the wheels. Your 12.5:1 compression is nice but ain't gonna help the fact that ethanol will require up to 40% more fuel vs pump 93 and those 600cc will be maxed out well below 300whp. A buddy of mine runs a 50/50 ethanol/93 mix and he has 28% more fuel added across the map vs straight 93. I'm in the process of this changeover right now and am learning there are a lot of things I've overlooked...

 

Correct on All Points. The BTUs of energy that petroleum -based 93 octane produces is much higher than that of ethanol based fuel. This is the reason why larger volume injectors of over 40% are needed in order to run the same power as though you were on petroleum-based fuel only

 

so you only need injectors that's 40% bigger. So that means you only need injectors that 450cc+. I was thinking 750cc but is that to big

 

Well since you gave no info originally, Shodan did his best to mind read. I imagine he's about as good at it as I am.

All the things listed in previous posts. Do the flexfuel sensor. The blends do vary quite a bit. Use a minimuman S300 for your ecu. Something that can blend maps (AEM, Link, etc) will give you a tune that is much better than and ecu that only offers you a 1-d correction factor (S300). Don't expect much gain on an NA B series. You need to do your fuel lines and pump. They probably need to be replaced even if you are staying gas, honestly. Your car is OLD. There are ethanol compatible hoses and fittings available in push on form too, in case you don't want to do stainless.

I just looked this up because it's been my understanding that, by law, it must be at least 70% to be sold as E85. Didn't realize the floor was 51%, but that makes sense for regions that need winter blends. Locally I've seen it as low as 70% all the way up to 83%.

https://afdc.energy.gov/fuels/ethanol_e85_specs.html

I've also heard stories of stations in Florida, which has no real need for winter blends, offering something around 60% pretty much all the time. I suspect these stations are keeping an E85 pump to collect their tax credits but cutting it with something else to keep the pumps open between sparse deliveries.

 

My original calculations I did on the fuel before my tester came in put me at 50.6, rounding to 51%.


Turns out I was off by a lot. Lol! My volume calls here were off by about 25. I'm barely mathable enough to remember that 2+2=9.. Anywho, I noticed at the pump the next day they had a certification sticker that said 70% and when my actual test kit got here, it checked out to 75% and has been beautifully consistent at that rate for the last 50 gallons.

 

Get at least 1000cc and be done with. You will be complaining when your duty cycle reaches 90% with those smaller injectors. All motor, that's fine. F/I...go bigger. That's usually the rule of thumb.