GT-ER

I don't know what to do...I'm only going to do one thing for now.

Either intall a huge water reservoir in the trunk or install a meth system.

I will not be getting a special tune for the meth system, it'll do whatever it can do on the tune I currently have. Same goes for the intercooler reservoir.

What would you guys do?

AKnight55

Rear tank

Benz-O-Rama

Meth, as long as you dont optimize tuning for it.

GT-ER

Yup....I figured this would happen...lol.

Why one over the other?

Benz-O-Rama

Tank will only give you short periods of lower IAT. Meth will provide lower IAT, for a longer period. Tank is safer, but as long as you dont tune for meth, it's just as safe.

Nitrous>Meth>Tank>Nothing

shardul

iTrader: (1)

doesn't methanol produce a richer mixture?

GT-ER

Yes, I wonder how much lower though.

Benz-O-Rama

You're considering a water/meth mix right? Not straight meth. Or are you?

Benz-O-Rama

Just do a tank and meth kit. You're nuts anyway....why stop at one.

GT-ER

I'd do straight meth...I mean...why not right?

Cause I just bought a set of injectors and I'm also looking for a throttle body so money is kinda tight.

Me nuts? Just because I dremeled out a new keyway on my $3,000 AMG crank shaft?

urbamworm

Meth injection hands down, a rear tank only dreams to keep intake temps in check like spraying water or water/meth in to the intake tract.

GT-ER

Would a 150psi system be enough for a single M8 injector pre intercooler?

urbamworm

I run one of the older Snow Performance kits in my Audi that has the 150psi pump and I run a 625cc nozzle. I believe an M8 is around 500cc, I am sure 500cc would make a substantial difference still. I would try to look around and see what size nozzle some guys are running. I forget who it was but someone posted an intake air temp log graph with meth, I want to say it was sneaky neon, maybe look for the thread where he posted that and then find out what size he uses because I remember the graph looking really good.

GT-ER

Well...I just ordered one. Since I'm not tuning for it I don't want to go too big because I'm afraid of my A/F ratio going to low. Plus, I plan on running straight meth.

It's a 150psi cooling mist kit with an M8 injector. It cost me $245 shipped...not bad.

urbamworm

I actually was looking at that same one myself for the E55. My Audi has a progressive kit but I figured something simple would suffice. Also I don't know if there is a difference with this car or not but my a/f is identical with my meth injection running or off in my other car. I usually run 0*F washer fluid from Walmart 80% of the time but on occasion get a 5 gallon jug of meth and mix it 50/50 but don't notice a difference. And I wouldn't run straight meth if I was you especially if not using it as an octane booster and tuning for it. Water is much better at cooling than meth is.

PACougar

I had a tank built for both, if money's tight you might want to go that route so you can easily add the other later on.

shardul

iTrader: (1)

where do you plan to place the injection nozzle

GT-ER

Pre intercooler.

shardul

iTrader: (1)

ok nice. try to use some ss braided line because the nylon lines supplies with the kit melt easy once they get close to the engine.

GT-ER

Really? I had this kit before on my G35 with no issues. Hmmmmm.....

chawkins2001

Meth kits are cheap, which one did you go with, and is it trunk mount or engine bay mount?

GT-ER

I went with cooling mist. It's a trunk mount setup.

urbamworm, I didn't know water cooled better than meth. Are you sure about this? How about if I run straight water?

kamilclk430

Looking to do a meth kit as well, I guess it will not hurt to have the tank along with the meth kit. The more cooling the better.

urbamworm

110% sure. Water has a higher latent heat of evaporation and will take heat out of the air longer since it doesn't instantly flash like methanol and will have cooler temps in the cylinders. Methanol has a higher one than gasoline so cools better than gas but water cools even better than methanol to be used for detonation control. That is why they recommend a 50/50 mix to get a "best of both worlds" scenario of water for the best cooling and protection and meth for the octane boost. I have ran straight water before several times in my Audi, but like I said before I usually run the washer fluid that has about 25% meth in it, just have to make sure you don't use one with other detergents or you could gum up your injector.

Silverr1

Can you use just tap water or does it have to be distilled since all of the water will theoretically flash to steam?