E85 or 100 Oct. + Meth??

[Sik95TSI]

So right now my car is tune on Race Gas 100 Oct. and Meth Injection 50/50 Mix the price of race gas is starting to catch up to me I'm kinda of tired of paying $7.99 A gallon I've heard great things about E85 and I'm willing to convert and buy the nessenecessary parts. E85 is $2.32 a gallon way better then race fuel price! But my ? is will I gain better from E85 or will I lose power? I've heard that E85 doesn't have the same octane rating of 100+Meth. But I've heard E85 is better when it comes to knock? Any input would be great thanks guys!

 

[My1GLaser]

Mine sometimes sits around in a 30 gallon drum for 3 months before I get to it and I haven't had any problems. Recently it sat for 5 months while I was doing an overhaul and it acted a little funny and I had to change my global a couple %

 

[Sik95TSI]

Mine sometimes sits around in a 30 gallon drum for 3 months before I get to it and I haven't had any problems. Recently it sat for 5 months while I was doing an overhaul and it acted a little funny and I had to change my global a couple %

Sweet!!

 

[filabob1]

Not sure if you guys new this or not, just a quick wiki about e85. Not sure how correct it is but who knows.

E85 has an octane rating higher than that of regular gasoline's typical rating of 87, or premium gasoline's 91-93. This allows it to be used in higher-compression engines, which tend to produce more power per unit of displacement than their gasoline counterparts. The Renewable Fuels Foundation states in its Changes in Gasoline IV manual, "There is no requirement to post octane on an E85 dispenser. If a retailer chooses to post octane, they should be aware that the often cited 105 octane is incorrect. This number was derived by using ethanol’s blending octane value in gasoline. This is not the proper way to calculate the octane of E85. Ethanol’s true octane value should be used to calculate E85’s octane value. This results in an octane range of 94-96 (R+M)/2. These calculations have been confirmed by actual-octane engine tests." [18]

 

[Calan]

E85 (preferably from a blender pump), and a good tune for it. Add a little Seafoam every other tank or three, and enjoy.

http://www.dsmtuners.com/forums/new...rn-gas-e70-beginner-merged.html?highlight=e85

http://www.dsmtuners.com/forums/new...rn-gas-e70-advanced-merged.html?highlight=e85

 

[LandSpeed-DSM]

Ya about that..

Because when I want reliable tuning related information, I go to wikipedia.

I'd like to see you try to get away with a max-effort E85 tune on something like 94AKI Sunoco...

 

[bradselph]

You think $7.99 a gallon is expensive for 100 oct!? Try paying $17/gallon for Q16. E85 is an awesome fuel, provided that you can tune for it safely. You'd be surprised how far it can take you!

17$ a gallon WTF i get it at the sebring international raceway for 9.99 a gallon i freaked out several ferrari drivers when i filled up with it.

 

[2literbeatsV8]

It's apparent that you can build a reliable E85 setup as long as you have a decent source. In the long run, it will save you a lot of money and remove the added complication of the Meth injection. IMO, you should remove as many sources of mechanical failure as possible...

 

[Sik95TSI]

It's apparent that you can build a reliable E85 setup as long as you have a decent source. In the long run, it will save you a lot of money and remove the added complication of the Meth injection. IMO, you should remove as many sources of mechanical failure as possible...

Not to get off subject here, but that's one of the reasons I want to convert to E-85 or a different fuel because I'm starting to worry a little bit about the Meth pump one day failing on me and second because they say overtime meth injetion can rust your piston rings/piston and not good for cylinder walls? this true????

 

[untouchablecc]

It's apparent that you can build a reliable E85 setup as long as you have a decent source. In the long run, it will save you a lot of money and remove the added complication of the Meth injection. IMO, you should remove as many sources of mechanical failure as possible...

In that case you should sell your DSM haha. Bad joke. The car is only as good as the mechanic who works on it. Im a fan of e85 but you cant just pull up into any station to get it. If you run meth you can get washer fluid and a bottle of heet anywhere and make up your own mixture if you know what your doing.

 

[dsmdeliveryboy]

I'll stick with my pump+meth, I've seen what E85 does to a fuel system and its ugly. Most legitimate meth injection kits have a fail-safe feature IF the meth injection happens to cut out for any reason. With pump+meth you still get good MPG's, E85 takes away 30% of your fuel economy, you don't kill your fuel system, and you can travel and not worry about having to look for a E85 pump. Also, as people have mentioned, when you get "E85" your not actually getting E85, its more like E60..

 

[Calan]

I've seen what E85 does to a fuel system and its ugly.

Only if it was in bad shape to begin with.

Also, as people have mentioned, when you get "E85" your not actually getting E85, its more like E60..

I've never gotten E85 from the blender station we have here that wasn't E85, or even a little higher.

*****

I run both E85, and pump + WAI when I feel like it. E85 is more reliable, and much easier to tune for predictably.

 

[turboglenn]

I prefer E85 because i have it locally, but it wil fool you into thnking you're a better tuner than you are sio be carefull..some cars like 12.5:1 (gas scale AFR) abd some like 11.5 - 11.8 (leaner you NEED more timing as it's harder to light the leaner mix, and richer lights and burns faster, so timing changes a lo in my experiecne just by the AFR you choose toi run)

race gas + too expensive and leaded is hard on widebands if you run one in your DD (not to mention valve seat deposits and such)

Methinjection i believe in but there's a lot of chance of failures, clogs, abd empty tanks killing engines, i run the small nozzle pre turbo and don't retune leaner for it, just use it on hot days to help the intake air temps and help the compressor map range extend

 

[92tsiawdguy]

Just buy 4 55 gallon barrels and store them at your house if you have the room. Thats what i do. But i like to run e98.

 

[Calan]

Just buy 4 55 gallon barrels and store them at your house if you have the room.

That only works if you go through it fairly quickly though. The water absorption rate of ethanol is crazy. A fill-up will usually only last about 3-4 weeks before the octane drops and phase separation sets in.

 

[punxnotdead185]

My vote will be to go with E85, my own personal comparison test was turboing a 9.5:1 cr Sentra and blew two motors on 14lbs from detonation breaking pistons on 93 octane, that was with the timing turned down 5 deg. Switched to E85 and cranked the timing back up at ran it up to 32lbs and lasted 3 months like that, only broke because the nearest E85 pump to us ran out and it got pump gas put back in it and the motor blew up within the hour .

 

[filabob1]

I say stick with the highest octane pump gas that is readily available. Especially if this is your DD. I don't know much about the meth injection so i can't comment on that. It's nice knowing I can go to most gas stations and get 91/93 opposed to e85. Just my $.02.

 

[Tsiguy214]

i am currently having issues with my 92 gsx swapped to e85 was great until cold weather im told my injectors are a pain bosch 2000s i got at a great price so now i am looking for fic2150s but they hurt my pockets 2672595780 if anyone is looking to part ways with a set name is chris

 

[95DsManiac]

I don't like meth anywhere in a set up personally, what where to happen if the pump fails? or what if you hit it and the meth moves to a part of the tank where the pump cant push it where it needs to go? Sounds like another reason for a motor to blow. At least with E-85 you know you wont have to worry about a pump failing or simply a empty tank by mistake and why spend 40-50$ on a drum of meth and then have to get gas too? When you ll spend less then that in a full tank of e-85. Just my thoughts my advice would be to just GO GREEN.

Have you run meth before? If not then I don't see how you could give an opinion on running it and it's down falls.

Op: I have run meth and 91 and loved it for the time I ran it. It would not move to a part of the tank where it wouldn't push through the system just because you "hit it". The set up literally speak for its self. And if you were dedicated to your dms and the things you do to it then I honestly doubt anyone would ever let the tank get low enough to do damage. How hard is it to literally pop the trunk every time you stop? That's how I checked mine. And you don't have to buy drums. You can make your own blend and it be cheaper still.

I however did switch to E85 and without changing the tune I did get better ETs by almost a second. Well I changed the tune of course but I should've said with the same boost, and only changing fuels and nothing else. I ended with a 12.5 in my gsT and then my gasket blew 5-6 months ago and I have been building it since then. But E85 is great. It is easy to tune and the power you can be made is all over this site and the internet. I wouldn't be looking more towards the octane rating of the 100/meth vs. the E85, but would more look into safety of engine tuning, price, pros and cons to running each. I literally pulled up to the tank, put it in, changed deadtimes and drove off. It is easy to tune if you already are familiar with your EMS. You can run a lot more timing per psi that you could with gasoline and meth. I never ran 100oct and meth but with 91 and meth I would have 18 degrees at 24-26psi and after I switched to E85 my timing at the same boost level was 25 degrees. And I could've went further easily.

Either way, whichever you decide to do, research and play your pros and cons of each and be confident in your decision.

Good luck and God bless,

Anthony B.