Okay, well, as the title states, I'm not sure which one to go with. I live in Indy, and E85 is very prevalent. I just need to know the pro's and con's of each, and which would be safer yet yield more gains. My mods are hahn catless dp, hahn intercooler/piping, hahn intake and stock k04. And tune obviously. I just need some insight.

 

Well as of 2 days ago I am on an e47 tune 1:1 e85 and 93. I like it and the gains are very noticeable. As most people will say meth can fail (pump, clogged lines, etc.) I have never had a problem with meth, but many have. The thing with e85 is that when you are tuned for it, all you have to worry about is putting e85 in your car..lol BTW it has been proven that the games are just about the same on a e47 tune and they are on full e85

 

So you would reccomend running a half E85/half 93 tune instead of full E85 should i choose to go that route?

 

^^^that is correct, but there is some cons to running e47 or e85...it breaks things down in the engine quicker, but you do get more power than meth, but meth is safer i think, plus it cleans out the carbon in the engine too...meth kit is $500 plus install, and running e is obviously more money in gas, but only needs to be tuned for...there are pros and cons for both...i personally would sacrifice a little power to be safer, therefore i would go with meth...or maybe running e47 is the perfect setup. i'm curious to hear more myself

 

I will probably end up going meth, since i would like to drive this car for some time.

 

I believe e47 is just about the perfect mix. I would say on my drive home I lost about 1MPG from before so not bad at all. I don't mind meth, but you have to make sure that you are always checking to make sure it running, spraying, full etc. Just gotta remember that if for some reason your meth is empty and you go to boost and are tuned for it, motor may go boom lol

 

thats true,but still i is safer on the engine^^^

 

Hmm... How much did you gain number wise going from just reglar fuel to this mix? And are you on stock turbo?

 

Well I have not put my car on a dyno yet, but when James (CCSS3) was tuning my car from where it was to where it is at now I wanna say I'm about ~45HP difference with lower boost and less timing. There have been many guys running full e85 on their motors for 50-60k miles and have not had any breakdown in the motor or parts. Honestly if I were you I would get tuned to e47 and run a nozzle with like a 80/20 water/meth mix. That will help cool really well...BTW I am stock turbo, ZZP IC/CP, K&N SRI, HAHN exhaust w/muffler delete

 

Thank you for the insight. I'll think about doing the "medley" of e47/meth. That might work out nicely. Although it could be overkill as well.

 

Alot of guys like having the meth as a "failsafe", nothing wrong with that, just an option. Me personally I am just on e47 and liking it so far. Usually get down to little under 1/8 of tank then throw 5gal E85 and 5gal 93 and I'm good to go. BTW you are in the Indy area? Who are you going to have tune you? I recommend James (chevycobaltss3) to tune you. He is very knowledgable and will help you understand everything better. He is right outside Louisville

 

E85 shouldnt break anything down in todays cars. Unless your stressing parts from pumping too much (fuel pumps)

 

Do yourself a solid and search about using ethanol and the ” breaking down” of engine parts before you post silly rhetoric like that. Ethanol will always be safer than running a methanol kit due to so many different variables that can fail or malfunction. Its simple, when running ethanol and being tuned for it, its always there. When running meth, if something should fail and there not be any kind of appropriate fail-safe or alerting device, ****'s going to get real and fast IE Boom.....

Now, some will argue that ethanol content can vary at different pumps BUT there have been many studies that indicate E25 (4:1) is more than sufficient in a GDI motor to take full advantage of the knock suppression ability.

OP, Do yourself a favor and search the forums and others about this very topic as this has been discussed for years and quite literally been beat to death.

I personally would recommend running e25 and being tuned accordingly as you will reap the benefits of ethanol and not lose too much with regard to fuel mileage. My opinion, meth is usually pressure referenced and reacts too slowly and can actually puddle, causing massive rich spikes in between shifts or when letting off (both refer to the throttle plate closing). I definitely wouldn't want to chance washing down the cylinders with additional fuel...

Bottom line; both work well, opinions will vary and both are safe with regard to fuel system components and engine components.

 

i run both...love it

 

okay, sorry about the "SILLY" comments i made.................i guess i'll do myself a "solid" and not make comments about E then.

 

Thank you for the solid information guys.

 

what meth kit are you looking into?

 

E25 isnt gonna produce the power of e47. It will provide good knock suppression though.

 

E85 doesn't get you high like meth

 

I see what you did there

 

If anything, the Meth injection would deteriorate the motor components more b/c Meth and aluminum don't get along so well...

 

SNOW or AEM.

 

E85 all the way. The elixir of the turbo gods

 

This should be made into a voting poll so that in the long run people can glance and see the results instead of reading every post and trying to figure it out. Not complaining, just a friendly suggestion.

 

K04hero, where abouts in Indy do you live?? Seeing as im in Indy and go out almost every weekend, i d be down to meet up. But as far as your question, i have had both meth and e47. I removed the AEM kit due to too many malfunctions which caused mr to pop cylinder 4. I am currently on a CSS3 tune running e47. According to james ive got more power from the e than i did w the meth. Yea it is kinda a pita to mix the to t stations but you get used to it. If you do go e and james tunes you he will set you up safely as a jic you mix wrong. Ive been running my setup since march and have loved it ever since. Hit me up if you have any questions

robk