What I need to get to run E85
 

Thanks guys, I have made up my mind, and will go E85 route.

Here my setup

Stock engine with bp62 sc 70mm 5 psi & trd intercooler & tensioner & radiator
E/H/I
MS3 (paid, waiting for built by rev)


Few question,

1. Which injector size/brand
1000cc ID?
2. Fuel pump
DW300?
3. Tuning
Anyone in WA area?
4. What else I need?

Thanks & happy new year!!




Car is only for track/hillclimb/tt use, so I would want a safe boost b4 I save enough to buy built from trackspeedenginerring. Just looking for 200whp+ safe power for 2013

Please excuse my noob question,

Thanks you and Merry Christmas

Are you talking e85 vs pump gas? 93 or 91?, or are you talking about c16 race fuels, etc?

Either way, I say for a race car it's a great idea. Especially with a blower, but it seems like you'd want to run more than 5psi as well, which of course e85 will help with.

For a street car I'm not sure. My car is a toy that I drive in the summer, so i'm considering it even on the stock motor and small turbo I'm going to run. But on a race car it should be a no-brainer if it's available.

Yes I am currently using 100race gas

I have no idea what the power potential is for that SC setup, and if it is enough to make 200-225hp then you don't need it at this point. But here are my thoughts anyway.

I don't really see a reason to do it until you have a built motor or need to squeeze every last drop of power out of your current setup, provided it won't surpass the strength of the stock bottom end. It will help some with heat absorption if you are detonating, but it may not be a huge jump from 100oct gas (I have never used that fuel so IDK how it behaves). E85 can get you some headroom for more timing advance, but again that may not be required since you are limited by the stock bottom end, though it could potentially net you some gains under the curve I guess by adding timing in lower RPMs.

I used E85 daily for two years in my last car as a way to substantially increase power over the 91oct tune I ran before that, but I had a mildly built motor that could handle it. 1000cc injectors, a Walbro 255HP, and a fairly conservative tune were enough for 330whp/360wtq from my 4g63.

What ecu are you currently on? I am having trouble believing that you have 550cc injectors on a stock ecu and able to idle. Honestly With 93 octane, proper cooling, and 200hp I see no reason to run e85 or 100 octane race gas. Now with a built motor and a large turbo then the story changes. How available is e85 where you are at?

I hav a power card now,

Btw anyone has 949 email? The botton on their site don't work

Yah.

OP just buy a megasquirt with knock detection and make a little more power safely. On pump gas.

When you do get your MS, log your air intake temps to make sure your intercooler is working well enough.

when youi hover over the button down in the lower bar it shows the address as

emilio700 -----at ----yahoo dot com

I know on other blower cars, even already properly tuned on 93, there is significant power to be gained going to e85. I would do it.

I would do it, besides power gain you get the added benefit of less detonation and cooler combustion temps.

TL;DR

Yes.

Dann

e85 = win. Just make sure you tune your car to add a good amount more fuel during start-up specially in cold weather. I have 550 cc injectors at 80% utilization, a walbro fuel pump, a small garrett tb2522 turbo, and the rest is a bigi kit with a brain MS.

Making 240 whp.

Hardest part of the whole thing is finding a good e85 station

This is good to know v01canic. I have the same injectors, and i'm shooting for 250whp max or so. It looks like i might be able to pull off 240-250whp on e85 with the 550's.

Now I ask you guys (i'm already HIGHLY considering doing this anyways), do you think its a good idea to go e85 on a 250whp t25 turbo equipped 1.8? I figure it will give me more room for error in tuning, and possibly allow me to squeeze out a bit more power from the tiny sr20 t25 I'm going to be using.

im running a 1.6L and i was able to do it

Which SR20 t25 are you planning on using? The same one that is just about a 2554? If so then I don't think even with e85 you will be able to hit 250hp at the wheels. Also how available is e85 in your area?

Yeah, the smaller one. I think you are right as well, 220-230whp is probably a better goal. I have plans of going to the bigger sr20 "t28", that is very close to a gt2560 eventually though.

Getting the e85 isn't a problem. I live in a small town, i rarely go out of town in my miata. Its more of an around town and canyon carving toy that i "daily" in the summer. I have an OTM. Long trips in the maita could be a problem, but it would be easy enough to flash my 91 octane map on there for road trips.

I have made up my mind on the e85, and just order a MS3 from rev

Talking to a local tuner, he said cars upgraded took 80% more fuel on E85 after tune. Never tuned one myself, but that is the headroom he told me to look at when upgrading for fuel.

I thought it was 30%? That's what I found to be the common number. I think my Subaru tune wanted about 35% more for that specific application.

Local tuner doesn't understand how math works.

E85 cars need anywhere from 15 to 50% more fuel, depending on load.

80% LOL

I started out adding 30% across the whole map when converting my MSM but ended up reducing most rows below Wot to 10-15% to reach the desired lambda targets. Hydra, Rc550 and ~15 psi.
I ran 2 tanks on e85 before switching back to gas. Stock fuel pump died the week after.

Why did u switch back to pump gas?

Mostly availability. Also we got 98 RON here in Norway so detonation is less of a problem.

Your 98 and USA 93 are the same thing its just a different testing system.

Dann

OP - you are on the right track. Get the ms3 from Rev, then get some quality ev14 injectors and i'd suggest pump as well (dw200). The only downside to e85 for most is lack of availability. If you don't have this problem, you don't have a problem:)

In addition to above I upgraded my fuel lines, fuel filter assy, fuel rail and injector O-rings.

lolol

Still sounds like it may be worth it to go e85 to squeeze the most out of my tiny turbo safely.

It also sounds like a good idea to keep a well tuned 91 octane map on hand for any trips with questionable e85 availability.

Thanks for the info, still need to do more research on this. I'm going to get the car running on the new motor/setup with 91 first and switch over. I'll probably need larger injectors anyways.

If you convert to E85 and then one day can't get any around you but need to drive the car so you have to run regular gas, do you need to sifon all the remaining E85 out of your tank or can you mix them? I would think you'd have to drain the tank fully...

Another benefit I see to E85 is for track-cars; I have zero detonation on the street, and there is headroom in my tune, but I've gotten pinging at the track when temps are high and running 91. My solution has been to throw a couple gallons of 100 in the tank to bring the octane avg a bit higher when I'm at the track, but 100 is $9/gallon at the track - so I would consider making the switch if I can get E85 near me... then just fill up some extra jugs and bring them to the track with me... might be more trouble than it's worth though...

-Ryan

You can mix them but you'll need to retune based on what you end up with percentage-wise. Probably more time consuming than siphoning out the E85. When I switched between E85 and pump91 on my previous car, I tried to get the tank below 1gal before refilling and switching maps, and that 1:15 mix made no significant difference on how the car ran on the street. Though on a race car pushed to the limit, I would not chance it.

Has anyone figured out how to do this with MS yet?

Its certainly possible...Both MS2 and 3 have the setup for it.Haven't seen anyone try it yet here though.
I just switch maps.

Theres a megasquirt thread on SF about it I believe they got it pretty close but the proefi is still a little better.

You can hook up a GM flex fuel sensor to megasquirt to determine exact ethanol content and adjust fueling accordingly. Unfortunately the GM flex fuel sensor is very expensive, but you could get lucky and find one in a junkyard or something.