Originally Posted by JPJNTX (Post 1407017)

My wife's mach has a v trim on it and 4.10s. We're getting between 16 and 19mph depending on who's driving. I get better than she does cuz she likes to hear the exhaust when going through the gears. I'm wondering what mpg we'd get with e85 and our set up. We're running 42lb injectors now. I've been told to go up to 55-60.

Originally Posted by TKat13 (Post 1407042)

Because I live in Texas I do not have to worry about the Winter blend. I have yet to have any adverse effect on E70 vs. E85.

Originally Posted by SloSVO (Post 1407217)

It has more to do with the attention given to the mix at the depot.. Here in AZ a good friend of mine works for a Western Refinery.. he tells me some stories that would make you wanna buy a LEAF..lol.. sometimes its E99 sometimes E65.. its all good in their eyes.. they don't give a frack.. A fellow cobra owners tests it every time he buys and has seen some discrepancies in the ethanol... Maybe since Tex is a oil state its more controlled? dunno

Originally Posted by TKat13 (Post 1369483)

I thought I would share my experience with changing to E85 on my Mach. The change is done to a lightly modded setup; 4:10 gears, K&N Filter only, Magnaflow weld-in mufflers, removed the back two cats, Spec Alum. Flywheel and RAM Clutch. That is it.

The Tune consisted of adding an SCT Chip and tune selector switch and having HPP do the tune.

My goal was modest, 300HP and 300TQ on E85. I knew going into this that my gains would be small if any since it is an N/A car but I wanted to run it anyway. (Future mods will be NO2)

To make sure I knew the exact impact of the different kinds of fuel, HPP tuned the car with 93 and then on the same day, emptied the tank and replaced with E85 and re-tuned. This way only one parameter changed, fuel.

I did not do a baseline today, I wish I had but I simply forgot. However, I did a dyno run when I purchased the car new in 2004.

All results are 'corrected'

2004 Results, KN and Magnaflows installed:
HP - 264
TQ - 280

2011 93 Tune by HPP
HP - 296.8
TQ - 314.8

2011 E85 Tune by HPP
HP - 310.1
TQ - 320.8
.

Originally Posted by 4vlover (Post 1511807)

The NGK plugs that everyone gets ( I have now) are good for this setup? Or is there a plug you should get for the fuel?

I'm also gonna put a wideband in my car. What would be an ideal number at WOT for the different fuel?

Originally Posted by Mach828 (Post 1511794)

What was changed in the e85 tune vs the 91 tune.

What was your air fuel and timing for each one?

Originally Posted by Mach828 (Post 1511821)

When it gets cold it helps to throw in 2 gallons of regular gas, otherwise cold starts can be annoying.

Make sure he spends some time tuning the driveability as well. If he doesn't then it will make cold starts more challenging.

Originally Posted by TKat13 (Post 1511828)

I can second that, the cold weather can be brutal on starting. I have never been stranded but my normal 1st flip of the ignition in winter takes 3 at times. In fact, when it is real cold I flip the switch to the other tune and run 93.

Originally Posted by TKat13 (Post 1369962)

1. Stock Pump - Yes
2. Stock Injectors - Yes
3. Chip - Yes, That is the one thing I added. It is the SCT chip with tune selector mounted in the coin slot location.
4. Cost per mile - Figured I would break even in the cost per mile department. No misconceptions from me going into this.
5. I did replace my fuel filter as well, just an OEM replacement from WIX. My old one had 70k+ miles on it. (to me that did not count as a mod)

Again, I will mention that I am still adding the BAP for the sake of not running the pumps at 100%. I was told that at WOT I was getting close to maxing out the pump. I did not feel like dropping the tank so the BAP is an easier install and is required for my next mod anyway. :)

Originally Posted by Alex302 (Post 1553495)

i have a question you say the stock pump was maxed out at WOT, how about the the stock injectors are they maxed out or is there still room to play? reason im asking new gas station opened up near me and they have e85 :-)

Originally Posted by Mach828 (Post 1553497)

Stock injectors were fine. Get a focus pump or the airtex e2448 just make sure its the walbro in the box. The e2448 actually has a lower duty cycle than my focus pump did. I like running the Lucas ethanol treatment as well. As far as performance gains, a no conservative 91 oct will make the same power as an NA e85 tune with the stock long block.

Sent with a shot of DROID go fast

Originally Posted by Alex302 (Post 1553495)

i have a question you say the stock pump was maxed out at WOT, how about the the stock injectors are they maxed out or is there still room to play? reason im asking new gas station opened up near me and they have e85 :-)

Originally Posted by Mach828 (Post 1553497)

Stock injectors were fine.
Sent with a shot of DROID go fast

Originally Posted by Alex302 (Post 1553500)

would there better gains with larger mass air and injectors on a full bolt on setup?

Originally Posted by TKat13 (Post 1553507)

Although I installed a BAP to fix the WOT issue, I later also installed a stryker 340lph fuel pump because I installed nitrous. Given the choice now, I would have just installed the fuel pump and not messed around with the BAP. Again, agreeing here with Mach828. Both will be for sale soon. :)


X2, stock injectors have never been an issue.


As long as the injectors are not maxed, then I do not see how adding larger injectors would help power, duty cycle would be less I suppose but I would think this would be a waste of money. I guess it all depends on your bolt ons.

Originally Posted by eruza (Post 1553530)

Good thread! There are a ton of E85 gas stations in my area. Also, I'm pretty much stock, so this is a nice mod for me to ponder.

Couple questions...

1. Given the variance of E85 throughout the seasons, is there an "off the shelf " addative for sale that could be used to keep you from having to switch to 93 gas?
2. Is it imperative that the knock sensors be disabled completely for this fuel mod? I would personally prefer to keep them in, just "backed off" a bit. but, only if needed. Although, I've heard headers can make the knock sensors activate prematurely - or falsely (if thats a word, Lol)
3. Any reason to believe there could be issues with fuel lines, tubing and the rails with E85 long term?
4. Do you have to change any wiring with the SVT Focus fuel pump? (didn't see anything about the wiring in prev posts)

Originally Posted by Mach828 (Post 1553557)

I've ran e85 for 50k miles and no issues with anything. Only problem I had was dirt in a batch of e85 from a cheap station that clogged my filter and burned up my pump.

I ran 28 degrees of timing for fun and it didn't detonate. There is no reason to keep the knock sensors on. You won't get the car to apply much timing with them on. They like to be leaner vs have more timing. I run mine at ~12.8 afr on e85

Focus pump and similar pumps are plug and play. No mods needed.

Lucas e85 additive is my favorite.

The difference in blends isn't significant. You can always add or remove a little fuel from your sct. If you don't its not a big deal.

Sent with a shot of DROID go fast