This discussion has been focused on fuel trims. Has anyone looked at the C8s fueling system, specifically fuel pump pressure, injector pulse width, and duty cycle to see if it can keep up with E30?

 

A bone stock LT1 can handle E85 no problem, cannot imagine a LT2 having a problem .

 

Any new car can handle e30. Two big corn states, Minnesota and Nebraska, conducted year long EPA-regulated on the road testing of a variety of unmodified vehicles using e30 and found no significant issues.

 

Without data, this is a big assumption.

This statement leads me to believe that the LT2 needs some modification to handle E85.

 

This thread started out as "E30 on Stock tune ", most of us blend E85 with the highest octane non ethanol fuel we have available to get a higher octane. That is what a few 10 sec NA C8 are doing, as part of their mods. Are you asking about straight E85?

 

No. I asked if anyone had looked at fuel pump pressure, injector pulse width, and duty cycle on E30. BJ67 replied that a stock LT1 could run E85 and assumed the LT2 could do the same and therefore E30 should be fine. I argue that's a big assumption.

allblackeverthing posted that Vengeance Racing told him a baby cam for fueling and injectors is needed to run E85 on a LT2. This leads me to believe that maybe the LT2 can't safely run full E85 without some modification to the fuel system.

Regardless of what's needed to run full E85, all I wanted to know was if the C8 fuel system can safely keep up with E30 and there's data to confirm that besides just fuel trims.

 

South Dakota too (I was involved).

 

Can you elaborate on how the testing was done? Were fuel trims the only thing that was measured or were other engine parameters looked at? Were tests done under varying load conditions like WOT?

It's one thing to drive cars under normal traffic conditions and if no engines blew up conclude there were no significant issues versus spirited driving a sports car owner might do with an occasional trip or two to Mexico.

 

All relevant OBDII parameters were logged during everything from normal street driving to repeated WOT dyno pulls.

 

This is quite the conversation and has me intrigued. Ironically I have a station which I use down the street with E85. The price is extensively cheaper. I never considered the fact I could run any amount of E85 in my C8. Typically I run 91 from this same station which is literally $1.00 cheaper then the 76/Chevron/etc. across the street.

C8 full intake, ported intake manifold, ported tb (95mm), catback - Nitrous but not connected
Without being a math major if I were to pull in with say a 1/4 tank. How many gallons would you put in of E85 before topping off with 91 here in CA?
Are there any real benefits outside of price?

In the same topic, after I had a Maggie (2300) installed on my 2017 Camaro, I was pissed to find out it can't handle straight E85 because I didnt touch the LT1 fueling while it was apart. I even added the sensor but at this point its useless. Car makes 550rwhp and is tuned. Runs great.
Could I mix E in that car as well safely?
Again how much should I consider?
With the Camaro I have the capability to look at HP tuner logs but have no idea what to look for which is why I never touched. I essentially but HP Tuners for the Camaro and C7 so I could log if ever needed.

I know I am all over the place here but now I am a little excited I might be able to take advantage of a little E85????

 

5 gallons of E85 in the C8's tank will get you E30 creating approximately 95-octane mixing with 91 E10.

 

Wonder what the Z06 will do with this mix

 

It won't hate it, that's for sure

 

Chris I should of just text you. LOL I am going to start running 5 gallons in the tank. I am curious to see what my MPG look like. I get about 23 combined in the C8 and about 13 in the Camaro so it should be interesting.

 

I can get up to about E20-25 before seeing a slight impact to MPG (which you will see a little of at E30). But at a 30% discount, well worth it before you even consider the power/performance gains!

 

Will I really see a differance?

 

I can tell you that 91 octane under ideal conditions pulls timing in my car.

 

Five gallons is good initially but subsequent fill ups will require a different amount of e85 to maintain the correct percentage since you will already have e30 in the tank. There are handy e85 blending phone apps that figure this out.

 

I installed a innovate gauge in my Camaro when I initially thought I could run E but never took out. I believe it reads the content. I need to check it out later today. What a great topic.

 

I had an NGuage tuner in my flex-tuned GT350 that also read ethanol percentage. I always ran straight e85 and over the course of four years the pump e85 never read less than 82%. Unlike other states where the ethanol content varies with the season, that doesn't seem to be the case in California.