Ok I just installed my intercooler and piping so thats the last bolt on I needed. Now I just gotta get tuned with meth and e85 and I just wanted to make sure I dont need anything extra to run meth or e85 on a stock motor

 

You won't have enough fuel pressure to run E85 unless the tuner limits the midrange quite a bit. Even at that it'll pop a CEL for LFP at high speeds & loads in 4th.

Better to tune for 1:1 E85 and 93, or commonly referred to E47. Plenty of fueling for that mix.

Spraying meth is not a good way to add WOT fuel, just cooling.

 

What's the purpose of running both?

 

If I had the money I would run both just to clean the valves.

 

Only the meth will clean the valves. The ethanol never passes across the valves but it could help keep the injectors clean.

 

A slight octane boost over just E. Meth isn't worth it IMO unless you don't have access to E85 like me.

 

I'm running e47 and a 7gph nozzel on my setup have been for awhile with no issues

 

I know.

 

once methonal is installed, and tuned for it, does it always have to be used?

 

That's kind of the point. If you're tuned for it, it should be used otherwise you run the risk of running lean or having too aggressive of tune for not having it.

 

u would never clean ur valves with e85 as it never touches them, maybe the bottom of them but thats it

 

with the ZZP 5th injector kit, the valves would get clean - but it would happen over time since the fuel is already atomized and only one injector is being used, it also depends on which e-fuel mix the driver uses as well - e85 or e90 or e47..

 

Yeah, but I doubt the OP will ever have a 5th injector. Atleast not in the near future.

 

Apparently none of you reads entire threads or posts before you post a comment.

I KNOW THE E85 WON'T CLEAN THE DAMN VALVES! I'm talking about the meth injection people, the METH INJECTION!

 

I understand that, lol.

 

You don't need anything else to run the methanol on your car.
Yes methanol is what gets the valves clean.

Give me a call with any of your questions

Chance

 

yes well thats different lol

 

The issue that I have with running WI (water injection) with meth on this car is that the car continually runs in closed loop. Introducing fuel outside of what the ECU knows means that you have some pretty serious potential for running lean if your additional fuel system craps out.

IMO, it would be unwise to run WI without a failsafe. This is true of any setup, but especially when your ECU fuel trims are depending on it to meet target AFR. Most cars run WOT in open loop, and it is much easier to introduce meth in those systems, IMO.

ex-water injection junkie.

 

With a properly setup water/methanol setup your 02 should not vary more than 1/2 point. This is not enought to cause damage if its removed. Main issue is that many people get that if a little is good more is better and start putting larger nozzles and running more than a 50/50 mix of meth water in the system. As you do this your car will be more dependent on it.

 

Actually, I'm going to argue that it is.

If you program the car for a proper .86 - .88 (12.6 - 12.9 AFR) target under WOT, the ECU will pull fuel to meet that if you are spraying WI with meth. If the meth goes away, now you're talking about 13+, until it can learn to retrim. Yes, this car runs very lean. Will it learn fast enough before starting to destroying itself? I dunno

I would agree with you that on most cars running in open loop that you can set them up in open loop to run somewhere a little richer, like 12.5 + WI to bring it down to 12 or so. Not as big of a deal if you run out. You'll always be guaranteed to have a certain amount of fuel.