[Can'tHave2MuchHP]

Originally Posted by UahFastBoi

I went full e85 on mine. Roto fab and Tony M tb. Car ran good. Made 612 on full E. Nothing else. I live in SoCal so I was having the same thoughts as you. I loved it. Any questions, ask!!!

No flex fuel sensor or fueling mods of any kind? Tuned I'm hoping? This sounds shoddy...

[jvandy50]

So are the injectors or fuel pump just being on the edge of not being able to run the extra 30% of volume it takes to give the full e85 a go? It works for some and not for others it seems.

I have e85 readily available and love the stuff...but having to mix them every fill up is probably a deal breaker for me. Mine measures 77% every time i test it

[Fraxum]

So if I go Ported ZR1 TB, Ported SC, and 60% e85 I will need to mod fueling too? No meth or pulley for me.

[1LE Red Dragon]

Originally Posted by Fraxum

So if I go Ported ZR1 TB, Ported SC, and 60% e85 I will need to mod fueling too? No meth or pulley for me.

You should be good, if you dont raise the boost on E60. Really no need to go over E50 though. Stay further away from the edge of the cliff.

[UahFastBoi]

Originally Posted by Can'tHave2MuchHP

No flex fuel sensor or fueling mods of any kind? Tuned I'm hoping? This sounds shoddy...

Of course the sensor and tune...... No fueling mods what so ever. Have all the time slips. You will run out of low side with pretty much any other mods.

[Jason18ZL1LE]

To properly run E85 a new cam is needed.

With my;
Stage 2 cam
Rotofab
10% lower
ARH LTH and 3” system
DSX
TM TB
Tune
Flex Fuel Sensor
Lingenfelter 160* TStat
C&R Racing Radiator
Prospeed Large Capcity Heat exchanger
Prospeed 1.5gal Supercharger Fender Tank

I am making over 700Whp and 685 Ft/lbs on the CMS Mustang dyno at E80. This is with a 100% stock LT4 fuel system plus the DSX lower.

[Real1LE]

Originally Posted by UahFastBoi

Of course the sensor and tune...... No fueling mods what so ever. Have all the time slips. You will run out of low side with pretty much any other mods.

hey can you explain what running out of low side means. I'm looking into dsx e85 kit but im wondering what is a safe % to run with stock fueling system? and how can i verify that for sure? and do you think more boost with the pulley upgrade is asking for trouble? should i just stick with headers, TB, CAI, and a tune? not looking for crazy HP #s

thanks for the feedback in advance

[Real1LE]

Originally Posted by Can'tHave2MuchHP

If everything on the car other than the Flex Fuel Setup is bone stock, you MAY be able to run 100% E85 but it would be pushing it. This would of course requiring tuning and loss of warranty. The fuel system is VERY limiting on these cars like previous LSA engines. You will probably need a low side and even injectors for full E and a fuel lobe upgrade will be necessary for much boost or aftermarket blowers. All in all, I think a Meth setup may be a simpler and more straightforward setup that most tuners can setup very effectively. E85 requires around 30%-40% more fuel. So your octane goes up and price per gallon goes down, but your consumption and fuel system needs go vastly up.

seems like meth is a scary thing to do! what % can you run e85 with the just the kit? without presenting issues?

[Getnlwr]

Originally Posted by Real1LE

hey can you explain what running out of low side means. I'm looking into dsx e85 kit but im wondering what is a safe % to run with stock fueling system? and how can i verify that for sure? and do you think more boost with the pulley upgrade is asking for trouble? should i just stick with headers, TB, CAI, and a tune? not looking for crazy HP #s

thanks for the feedback in advance

Low side is the fuel from the tank. I believe its about 70PSI on this engine, before it goes to a high pressure mechanical pump on the engine that tops out at 2900Psi

[7LitreC5]

To me, the switch to E85 is well worth the effort. My car made +49 rwhp on E85 vs. 91 octane. Runs were done on the same day about an hour apart. The "E85" here is advertised as 70% ethanol and is actually closer to 65%.

My car cold starts, hot starts, and drives like stock on E85. I am getting 15.6 mpg in my normal rural/city driving. That is down from about 18.5 on 91 octane.

I live at altitude so I can get away with running full E85 because power output is lower here. My low side is starting to drop right before the rev limiter. A low side will be the next upgrade.

[TJay74]

Originally Posted by wlsmoku

I wanted to do upper pulley, cai and e85 and my tuner said stock fuel system isn't good enough to support it, so I am adding meth.

This is a misconception and not accurate. The ZL1 fuel system is more than enough to run E85 up to about E60 with no issues. Just need a shop that knows how to tune and can adjust the SOI and EOI.

I have a 2017 SS 1LE with a Procharger D1SC and the full LT4 fuel system from tank to engine. I made over 630rwhp while running E40, I will get near 700rwhp once I put E60 in the car.

As for the OP, all you need to do is call Jeremy at Skidmark garage and order his plug and play E85 kit and install it. It will take less than an hour of time, then once installed take the car to your favorite tuning shop and pay them to turn on the E85 sensor and setup the tune. Then you can run E85 or gas at your leisure.

The only thing I would suggest is to ramp up the E85 slowly, start at say E40 and move up in 5 increments while logging the low and high side fuel pressure until you see it start to taper off on the high side.

You will get the vast majority of the HP gains once you hit E50 or so, after that from E50 to E80 there is only about 5-10 rwhp gains left to be had.

[KingLT1]

Originally Posted by Can'tHave2MuchHP

If everything on the car other than the Flex Fuel Setup is bone stock, you MAY be able to run 100% E85 but it would be pushing it. This would of course requiring tuning and loss of warranty. The fuel system is VERY limiting on these cars like previous LSA engines. You will probably need a low side and even injectors for full E and a fuel lobe upgrade will be necessary for much boost or aftermarket blowers. All in all, I think a Meth setup may be a simpler and more straightforward setup that most tuners can setup very effectively. E85 requires around 30%-40% more fuel. So your octane goes up and price per gallon goes down, but your consumption and fuel system needs go vastly up.

I had my brothers C7Z tuned on E50 with Kong ported blower, 11psi pulley, Cordes 5" CAI, Borla Catless X, JMS pump booster. Injectors 5.7ms with stable high and low fuel pressure.

He went to a 2.1 upper, added a LPE big bore, and injectors went to 6.3ms but the fuel pressures were still solid. So the injectors were tapped at 12.5psi with E50.

2.1 pulley ended up being to small for the snout and locked up(I didn't install it), so we pulled the 1.74 blower off and waiting to install a Maggie 2300. Probably going to drop back to E40 and see where it's at and go from there.

A stock LT4 should be able to run full pump E85 no problem imo if the tuning is correct.

[F419sr1]

With the jms my high side is the weak point. 10 pounds of boost and I’m stuck at E40.

[Can'tHave2MuchHP]

Originally Posted by KingLT1

I had my brothers C7Z tuned on E50 with Kong ported blower, 11psi pulley, Cordes 5" CAI, Borla Catless X, JMS pump booster. Injectors 5.7ms with stable high and low fuel pressure.

He went to a 2.1 upper, added a LPE big bore, and injectors went to 6.3ms but the fuel pressures were still solid. So the injectors were tapped at 12.5psi with E50.

2.1 pulley ended up being to small for the snout and locked up(I didn't install it), so we pulled the 1.74 blower off and waiting to install a Maggie 2300. Probably going to drop back to E40 and see where it's at and go from there.

A stock LT4 should be able to run full pump E85 no problem imo if the tuning is correct.

Correct, and you'll notice I said on an otherwise stock (Meaning no boost added for the most part) you may be able to get away with 100% E85.