My Experience with mixing E85 - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Aqua Blue RS/SS · 06-09-2021, 05:41 PM

Quote:

Originally Posted by LS3_BILL

shouldn't the fuel tables have a but of adjustment to them? to compensate for different levels of ethanol?

Not 25-50+% of ethanol. 10% is a lot different than what you are attempting. Youre playing with fire big time in my eyes. Normal ethanol blended fuel has 10% at most. I only run ethanol free as much as possible honestly.

LS3_BILL · 06-09-2021, 05:45 PM

Quote:

Originally Posted by Aqua Blue RS/SS

Not 25-50+% of ethanol. 10% is a lot different than what you are attempting. Youre playing with fire big time in my eyes.

okay this is fine.. now if I run flex sensor and tune .. what is the most our factory injectors and fuel pump will support?... can you then do 50/50 mix ?

Car Nation Videos · 06-09-2021, 05:49 PM

You gotta be tuned for flex.

Car Nation Videos · 06-09-2021, 05:51 PM

Quote:

Originally Posted by LS3_BILL

okay this is fine.. now if I run flex sensor and tune .. what is the most our factory injectors and fuel pump will support?... can you then do 50/50 mix ?

Yes if your tuned for it.

LS3_BILL · 06-09-2021, 05:53 PM

Quote:

Originally Posted by Car Nation Videos

Yes if your tuned for it.

okay awesome.. thank you

Car Nation Videos · 06-09-2021, 05:56 PM

Quote:

Originally Posted by LS3_BILL

okay awesome.. thank you

Factory injectors would support 41.6 pounds at 58 PSI

TheFlyingBananaSS · 06-09-2021, 07:27 PM

Set it up properly so you dont blow it up. Even with that you will not see much of a gain. Unless you have a blower gains are minimal. Burn off what you have now and dont do it again until you get tuned, get bigger injectors, and add a ZL1 pump. That's the minimum you should have to play with E85.

Car Nation Videos · 06-09-2021, 10:28 PM

Why are you risking so much for such a minimal gain? We’re talking maybe 5 hp. You would be safer just running octane booster.

LS3_BILL · 06-10-2021, 12:32 AM

Quote:

Originally Posted by Car Nation Videos

Why are you risking so much for such a minimal gain? We’re talking maybe 5 hp. You would be safer just running octane booster.

honestly haven't seen or heard of any LS cars blowing up by mixing a little bit with Gasoline.... I could see running straight ethanol... the car does noticeably run better

1LE_ROLL · 06-10-2021, 12:41 AM

That’s because everyone knows to just get tuned for it.... ethanol requires about 30% more than 93 octane just because of how it evaporates and the way it combusts. What kind of backwoods LS cars have you seen running 50/50 mix without a tune? I bet they don’t run long.

LS3_BILL · 06-10-2021, 12:50 AM

Quote:

Originally Posted by 1LE_ROLL

That’s because everyone knows to just get tuned for it.... ethanol requires about 30% more than 93 octane just because of how it evaporates and the way it combusts. What kind of backwoods LS cars have you seen running 50/50 mix without a tune? I bet they don’t run long.

Actually it would be 30% more if I was running full e85... you have any actual data logs??? orrr

Ashen L99 · 06-10-2021, 01:22 AM

Quote:

Originally Posted by LS3_BILL

Actually it would be 30% more if I was running full e85... you have any actual data logs??? orrr

The percentage for required fuel goes up with your ethanol content it’s not just 30% or nothing.....The cars computer will only adjust up to 15%. I bet if we logged your car it would be lean. Why did you think it was a good idea to just mix e-85 without a tune? Do you see other people doing it? No. Because the car will blow up. Why would they even make a flex fuel kit if what you’re doing is the correct way? Some people man, but its your car have fun while it lasts.

Badbubba · 06-10-2021, 01:54 AM

"E85" can vary between 51% to 83%. So mixing 93 with "E85" by volume can change with every fill-up mixing. Your car will adjust using a larger amount of ethonal blend to a certain point. Your O2 sensors will read a lean condition and the ecm will adjust the LTFT, long term fuel trims, adding fuel. Iirc, after +15% ltft, you'll get a cel, check engine light. If your able to, log the ltft. It will be positive with the higher blend. In order to get consistent ethonal blends, you can pick up a cheap tester. It's a glass bottle that you add fuel and water in to, shake it up and read the results on the graduated scale. Do this for 93 and "E85". Then you could blend with consistency. You could then see what blend gives you about a +10% ltft. Then continue to use that blend. Imo, it’s just not worth the hassle for a small gain and potential problems.

LCPLPunk · 06-10-2021, 06:02 AM

Duuuuude, nice!!! Can you do a 85% E85 / 15% gas mix without the pump/tune you need and let us know how it feels? Make sure the dyno guys run it hard so we know the real effects!

06-09-2021, 07:27 PM	#21
TheFlyingBananaSS Evil Genius of Chevrolet Drives: 2017 Z06, 2019 XTS, 2013 SS Join Date: Feb 2017 Location: New York Posts: 3,260	Set it up properly so you dont blow it up. Even with that you will not see much of a gain. Unless you have a blower gains are minimal. Burn off what you have now and dont do it again until you get tuned, get bigger injectors, and add a ZL1 pump. That's the minimum you should have to play with E85. __________________ GPI SS2 VVT cam, ECS Novi 1500 supercharger, Corsa Extreme, Detroit Speed and BMR suspension, Circle D triple disc, Melling oil pump, LS2 chain tensioner, ATI 10% UD, DSX E85 kit, High Energy coils, BTR springs, LS2 Lifter trays, Titanium retainers, hardened push rods, FIC 1000 injectors, ZL1 pump, Mighty Mouse catch can, AEM gauges, Tial BOV, Richmond 3.91 gears, Custom gauge bezels, Speed Engineering headers, Stainless Works HF cats, DSX Aux pump, 710rwhp on E85.

06-10-2021, 12:41 AM	#24
1LE_ROLL Drives: 2015 2SS/RS 1LE Join Date: Nov 2020 Location: austin tx Posts: 54	That’s because everyone knows to just get tuned for it.... ethanol requires about 30% more than 93 octane just because of how it evaporates and the way it combusts. What kind of backwoods LS cars have you seen running 50/50 mix without a tune? I bet they don’t run long. __________________ SE 1 7/8 tubes and 3 inch X pipe, Vararam DRX, TSP stage 2 cam, Deatschwerks 50 lb injectors, Motion catch can, E85. More to come.

06-10-2021, 01:54 AM	#27
Badbubba GrINned & JUICEd Drives: 15STI, 10Expy, 10 2SS/RS M6, 47KB1 Join Date: Nov 2009 Location: Pittsburgh, PA Posts: 1,247	"E85" can vary between 51% to 83%. So mixing 93 with "E85" by volume can change with every fill-up mixing. Your car will adjust using a larger amount of ethonal blend to a certain point. Your O2 sensors will read a lean condition and the ecm will adjust the LTFT, long term fuel trims, adding fuel. Iirc, after +15% ltft, you'll get a cel, check engine light. If your able to, log the ltft. It will be positive with the higher blend. In order to get consistent ethonal blends, you can pick up a cheap tester. It's a glass bottle that you add fuel and water in to, shake it up and read the results on the graduated scale. Do this for 93 and "E85". Then you could blend with consistency. You could then see what blend gives you about a +10% ltft. Then continue to use that blend. Imo, it’s just not worth the hassle for a small gain and potential problems. __________________ GPI SS3 Cam & stuff,N.O. Plate(dedicated fuel tank,progressive,fuel hose upgrade,remote opener,heater,console switches),LNC2000,CTAP,ARH 1 7/8" LTs/gutted cats/X pipe/mufflers,Jet Hot coated LTs,GPI HPT Tune,CAI, Scoop,Rx Catch Can,Gates heater hose relocation, Remote clutch & auto brake res,Metco loop,Momentum Tunnel Brace,TSW Nurb 18",555 & 05,Pfadt trailing arms & toe rods,Autometer WB,Fesler Pillar Pod,LED strips (int),Lloyds floor & trunk mats,LED DRL/front turn & license plate,DRL harness,VLEDs tail lights,Plasticoat Bowties. Ord: Oct 5, 2009 Rec: Nov 19, 2009 13.17@112.6 stock Last edited by Badbubba; 06-10-2021 at 06:11 AM.

06-10-2021, 06:02 AM	#28
LCPLPunk USA-1 Drives: 2010 Camaro SS L99 Join Date: Jul 2016 Location: Near DC Posts: 1,893 View My Garage	Duuuuude, nice!!! Can you do a 85% E85 / 15% gas mix without the pump/tune you need and let us know how it feels? Make sure the dyno guys run it hard so we know the real effects! __________________ "A Camaro in the garage is safe, but that's not what Camaros are built for..." R2C CAI / Apex Scoop / VMAX Ported TB / Speed Engineering LTHs / X-pipe / GPI port/rod-mod intake manifold / Circle D 3200 278mm Converter / 3.91 gears / DynoSteve tuned / 1LE Shocks/Struts/Toe Links / ZL1 Rear Sway Bar / Z/28 Trailing arms / Prothane Radius Arm & Subframe Bushings / BMR UCA Bracket, Steering rack bushing / B&M Tranny Cooler / RX Catch Can / Jannetty Tranny Dipstick / 2012+ Heater Hose / 2013+ Rearview Mirror / Fuel rail flip / Drake shifter / Oil Cooler Delete

06-09-2021, 05:49 PM	#17
Car Nation Videos YouTube-Car Nation Videos Drives: 2010 Chevrolet Camaro Join Date: Nov 2019 Location: Florida Posts: 246	You gotta be tuned for flex.

06-09-2021, 10:28 PM	#22
Car Nation Videos YouTube-Car Nation Videos Drives: 2010 Chevrolet Camaro Join Date: Nov 2019 Location: Florida Posts: 246	Why are you risking so much for such a minimal gain? We’re talking maybe 5 hp. You would be safer just running octane booster.