Pump gas suby’s aren’t known to have an epidemic regarding plug failure but I did read of some members having them fail from regular usage like any vehicle. It seemed to be more of an issue to have the coil pack fail on them. As for stock injector issues I never read of a failure till I had the pleasure of having a failure. Can’t say definitively whether running E85 had any impact on the injector failing for me, I’m skeptical as I read of next to no one having an injector failure regardless of fuel. When it failed I was getting no spray at all in that cylinder, IDC was 0, roughness count on that cylinder ran up like our national debt figure.

I do believe E85 had something to do with the plug failing at a separate point in time, I have seen quite a few members report plugs fouling with E85, when pulling the plug it is normally a dark tan or brown when fouled from E85 usage. The injectors I was running were Perrin 816cc modified stock injectors; they had been flowtested by witchhunter prior to throwing them on. To my knowledge they were new injectors that had been modified I got 15k out of the one that failed. My legacy gt was an 05.Plugs were IIRC NGK iridium. O2 sensor in the headers were known to go out on e85 once every 10-15k. Mine failed once over the course of my E85 encounter, I knew of two local members from my forum that had their front o2 sensor fail in addition to many on the forum not local to me. Best of luck to you, I repeat if you drive your vette like most and run it 3-5000 miles a year, it may be a few years before you notice any additional maintenance associated with E85.

 

I have experience in tuning with stock and modified LS cars on E85. Including my own 06 C6 which made 525 RWHP on pump and picked up 12 RWHP and 20 RWTQ.

For those in the MD area I can tune your car on E85. It's actually the best bang for the buck I ever got.

 

Thought you would get more power than that. Were you comparing the gain to Race fuel?

 

8-12rwhp and 15-20 rwtq on E85 is generally about the norm when going from 93 octane from what I've seen.

You gained crazy power though, lol. Maybe your car was WWAAAYYY off from the factory.

 

You may be right.. Not sure though... I thought it was more like gaining 4-5% WHP. To further explain - If his WHP ratings are 150whp higher than my car then his net gain should be higher. Never thought it would have been a static 15-20 every time no matter the WHP range.

Either way the guy made more power

 

Exactly...E85 makes more power, even on N/A cars.

And that's why I'll be running it

 

No pump gas vs E85. However the max power differences are not where the REAL gain from E85 comes from. I picked up over 40RWHP at low RPMs and crazy torque! The power curve looks to be a different car when comparing the two graphs. Def worth the conversion if you have an E85 station next to your house and shop like I do.

 

Thanks for sharing! That is something to brag about

 

Holy crap!

I can't wait for it...and I have an E85 station right in front of my neighborhood

 

Here is a comparison. Both graphs are the same car same exact mods. Look at the HUGE difference in the initial hit. Doesn't even look like the same car till it gets high in RPMs. Also don't pay attention to the little blip at the end of the pump gas graph. It's obviously just a glitch in the dyno software where I let off. So the peak HP number on the pump gas is about 12 RWHP off.

This is a 06 C6 Automatic trans with 3600 stall on dragradials. Also this is an older graph. The car was getting bad valve float above 6300-6500 RPM which you can see in these graphs. We had to change the springs. Now the car makes more power but this graph shows the best comparison.

Both red lines are pump and both green are e85.

 

Holy ****.... I bet it pulls 1g going strait. This is just another thing to document how AWESOME E85 is at your local gas station. I want headers so bad now it hurts....

 

I left some info out so I edited. This is through an auto on Dragradials. This car would make around 600 RWHP through a 6 speed manual and street tires. Also now the valve float issue is fixed it makes around 550 RWHP. Also you can see the graph is much smoother through out.

 

This is a nitrous motor with a custom ground cam specific for nitrous, heavy pistons, larger ring gap, and 2 steps colder plugs. So it should make well into mid 800#s RWHP on the 300 shot. This also happens to be my daily driver.

 

Bobby, you seem to have good experience with E-85. Do you know of any basic issues / problems or extra maintenance when tuning a stock (2008) LS3 C6 for E-85? Usually if it seems too good to be true it is, and a 30+hp /tq gain seems very substantial to not have some kind of consequences or cons!?????

 

If you know how to tune for it it's quite simple. Main draw backs are simply that it requires bigger injectors on most cars, usually ones with internal mods, more frequent fill ups, and harder to find e85 pumps. Other then that on most newer cars it requires nothing special.

 

Filled my stock 2011 GS with E85 and got a check engine light within a couple of miles--any input? Didn't have the codes read yet but I supect lean condition or something to do with the cats. Ran my '92 C4 on E85 a lot--worked well until it got cool and it was hard to start.

 

It is definitely not a good idea to run E85 in your stock GS. You should read this thread from the beginning to see what it takes to properly configure your fuel system and tune for E85.

 

My input is that you need to do some research, because you don't understand what you're doing yet.

There is a wealth of information on here, but even more so on LS1tech.

 

pm sent bobbyp.

 

Yes most likely it is running extremely lean. It's a very bad idea to just dump in E85 with out making sure you have the fuel system and tune to support it.