how much hp increase from e85?

[jayno20]

Originally Posted by STUNNAH

You have enough fuel with the injectors and booster, you should see 40 to 50 rwhp increase...You just need to add a flex fuel sensor and tune...

I am assuming you mean running a mix of E85 and 93 because that is not enough fuel pump for straight E85.

[crazydave]

Originally Posted by jscott

Where are you guys getting your flex fuel sensors? Did you use a kit?

DSX sensor, which comes wired with oem connectors and crimp so all you do is plug it in. DSX also makes a supplemental fp, which only runs when you under boost. Check the Web page on my dyno graph, they are near Austin and will get you all set up.

[479ls3]

Originally Posted by jayno20

I am assuming you mean running a mix of E85 and 93 because that is not enough fuel pump for straight E85.

Anyone have a 2.55 upper and gone E85? I spoke to DSX and he/they believe the 2.55 shouldn't overwork the pump. I believe my tuner said the fuel pump is currently around 54% DC. I go in Tuesday, so I guess we'll find out.

[silversleeper]

I don't think DSX Dave told you that. E85 AND 2.55 on a stock pump.

I can tell you for a fact e85 with CAI and catless with no pulley at all will drop fuel pressure so a pulley will make it worse.
He might have said the pulley on non-85 would work. Or a pulley and e85 on a DSX fuel pump aux upgrade will work... so No, I don't believe it.

[479ls3]

Originally Posted by silversleeper

I don't think DSX Dave told you that. E85 AND 2.55 on a stock pump.

I can tell you for a fact e85 with CAI and catless with no pulley at all will drop fuel pressure so a pulley will make it worse.
He might have said the pulley on non-85 would work. Or a pulley and e85 on a DSX fuel pump aux upgrade will work... so No, I don't believe it.

See below.

[silversleeper]

Looks like he told you that. I'm wrong that it was said, can't believe Dave would be that incorrect. I appologize for saying you misunderstood.
I can say for SURE it drops pressure as I did a log with 850ID's and e85 and CAI and tune before pulleys or boost a pump. It would be worse with headers and pulley. I don't recall what mix it was, e70 or so.

[479ls3]

Originally Posted by silversleeper

Looks like he told you that. I'm wrong that it was said, can't believe Dave would be that incorrect. I appologize for saying you misunderstood.
I can say for SURE it drops pressure as I did a log with 850ID's and e85 and CAI and tune before pulleys or boost a pump. It would be worse with headers and pulley. I don't recall what mix it was, e70 or so.

It’s all good. Based on what my previous tuner said I’m currently at 50% DC on my fuel pump. Dave did say “I think you’ll be fine” and my tuner also “believes I’ll be fine.” We’ll see Tuesday

[silversleeper]

It would be interesting to see what you find. I'll post a pic of a run, you can see pump is maxed and fuel psi requested is 58psi but only able to deliver 42psi and that's only at 5300rpm and about 8psi boost. My boost is 1 or 2 psi lower than I'd expect. I don't know if it's just measurement or heat or a slipping belt or leak.
Edit: Where it says 13.8psi boost is a wrong calculation, its about 7 or 8 as you can see from absolute pressure.

['10CamaroDude]

I know it's old, but I started running 5 Gallons of E85 on top of 87 octane, just fine.

Also, if you're naturally aspirated, your fuel pump and injectors can handle 100%
E85, without a tune. Tuning helps, but not required. Turbos and Supercharged
cars need a tune, pump, and maybe larger injectors but I was told the stock ones
are pretty hefty.

[RobZL1]

Just because you physically CAN jump off your roof doesn't mean it's a good idea to actually do it. Sure, your trims will work toward stoich due to the narrowbands. They don't know what fuel is there, just O2. Let's hope they have enough room to move. Then, when you floor it and go into PE, let's hope your LTFT's weren't maxed out with your STFT's at 20 as well, for example. The LTFT's will transfer into PE, but you'd still be 20% lean in this hypothetical case.

['10CamaroDude]

If I can jump off the roof, and land safely, why not? HORRIBLE analogy... Most
people will die jumping off a roof, not die from running E85 in their car. You need
a much better analogy, like Moonshine? You can run that too, but, it's not safe at
all. Where as E85 is safe. Winter blend is much less Ethanol than in the summer
anyway, more like E55.

The specs of the 3.6 LLT and LFX say they're Ethanol capable. Yes, I know what
capable means, with the correct hardware and tune. However, on almost any
2001 and later naturally aspirated motor, you can use it. The issue is, to what degree?

I am running 5-6 gallons on top of E10 87. There is no problem with that what
so ever. I would not run a full tank of ethanol, but I will mix it. This is much
better than putting additives in the fuel for boosting octane levels. So, I pay
less this way. 19 gallons + $4.00 for a booster, is way more than 13 gallons of
87 then 6 gallon of E85 at .30+ cents cheaper per gallon, to raise the octane level.
I actually save money -vs- using all 87, and an additive, or all 91/93 fuel.

I am telling what I do, no one else has to do it, and I am not twisting anyone's
arm to make them. Works for me, has for years, and will continue to do it.

I get no lag, no dead spots, or bogging. The Mustang LOVES it! I have never
heard it suck air like it does at WOT like it does now, with the E85 mix. Very
enjoyable acceleration curve.

Camaro? Smoothed out the idle, has more acceleration. I do not have the open
intake on it like the Mustang, so I can't hear the difference, but I am satisfied.

[RobZL1]

Um. OK. Didn't want to start a fight dude. You win. (BTW, since I see you are new to the forum, this is the ZL1 subforum, not the LFX or LLT subforum. No way any of us here are putting anything greater than E10 in our LSA's without a sensor and more fuel supply, man.)

['10CamaroDude]

The LZ1 is set up for Flex Fuel. You need the tune for PERFORMANCE, not actually for
every-day use.

As far as LLT or LFX, the simple question was on the use of E85. These newer motors are
set up for it. The LZ1 came with 37-lb. injectors that can support roughly 450 whp. The fuel
pump becomes an issue around 520 whp on E10 alone.

Simply put, for every-day road use, you don't need a tune on any N/A motor to be able
to run it. If you want to take advantage of the power it offers, then sure.

Again, You're either jaded or bigoted on the issue because what you say is not 100%
fact, or true, yet you insist it is.

There is no fight, you said that, so you must be the one getting upset.

[RobZL1]

No problem at all, chief. We'll just have to agree to disagree. I'm only posting here because I'm just not sure the relevance of NA motors in a supercharged subforum. (Heck, I'm not even sure what an "LZ1" motor is??)

I just want to clarify for any unsuspecting ZL1 owner that comes in here and thinks he can fill up on some e85 blend and go romp on it based on your comments. Since you keep posting about NA v6 motors in a boosted v8 subforum, I guess the point is really moot anyway.

I fully agree that the stock fuel system components in a ZL1 with a LSA motor can physically handle e85 without corroding. I just would strongly advice against it without a flex fuel sensor and a re-calibration of the ECM, because your fuel trims will be pushing their limits, even during cruise. And I certainly would not go WOT with an LSA engine with any amount of E85 blend in the tank with the stock fueling components and stock calibration.

You are welcome to your opinion, just as I am welcome to mine. If you find yourself with an LSA engine, feel free to fill it up with e85 in any blend combo you like.

Thanks for the enlightening discussion! If I ever put an NA v6 motor in my ZL1, I may throw caution to the wind and fill it up with a few gallons of e85 one day just for giggles.