Meth injection and Stage3

So who's running a meth kit and keeping HOM here? Curious cuz I am planning to do a custom kit and wondering how much meth you're injecting, in terms of mixture, and nozzle(s), and when you are activating it.

 

subscribing

 

Somebody fill me in, you can not be talking about the meth I'm thinking about...

 

already answered in the other thread, but i'll put it here anyway.

i'm using a 50/50 mix. two 3lph nozzels, activating at 10 and 20psi. i've had this set up for about two and a half years and never had a problem holding hom. well actually i did but it was completly unrelated (pos fidanza cam gears cracked and the cams were rattling around). i also use C16 when i'm in hom so that helps.

 

Damn, you use C16 AND meth to hold HOM? I hold HOM on 110 alone, but I am planning to get the meth kit so that I can run pump 93 and hold HOM. One of the SRT4 guys in San Antonio does that right now, but not everyone has a lot of luck holding HOM with just meth. Can you not hold with just C16, or with just meth?

As for doing the turbo and fuel first, the failsafe I'm counting on is the Mopar PCM. It should kick me out of HOM if I get 5+ degrees of knock, and I have a techgauge and a/f gauge in the car so I can monitor knock levels as well as the a/f, so I think I'll be safe. I'll be dyno tuning the meth kit anyways, to be sure.

 

it might kick you out of hom, but remember that boost levels don't change in hom only timing does. so even though you're not in hom, you're still running a risk. especially if you're changing the turbo out, you cannot count on the ecu to control that anymore. it's designed for certain perameters, which you are not going to be working within anymore. and if you're going to be using a fuel controller, well the ecu isn't controlling very much anymore at that point. any good tuner will tell you that you should mod and tune first, then add in w/i. it's not designed as a power-adder, it's only a safety feature. and one that can (and does) fail on occassion.

i hold hom fine with c16. i am not using w/i as a way to hold hom, i'm using it to prevent detonation, which is all that it's designed to do. in fact, i do not hold with just w/i i've tried it. i am also running higher boost than normal so that is mostly the reason. but even before i changed boost levels i could not hold hom with 93 and w/i, even with a 50/50 mix.

 

Hmm, well I guess it's a matter of tuning philsophies. I plan to go for HOM with the meth alone, a few have been successful with that. I don't plan to run more than 25psi on the stock S3 turbo, which is what it runs now, but if I actually do the turbo upgrade then I will be rethinking the whole thing anyways, not just dropping it in with the same meth parameters.

How much boost are you pushing btw, and what are you setting the boost with?

 

i spike 29 and hold 27. i'm using a agp wga and a kinetic mbc.

 

and what turbo are u holding 27 psi

 

a s3 turbo. once fuel and the ems goes in i'll be uping that to holding 29psi.

 

it cant be a stock S3 cause im raising the bs flag

 

it is a stock s3 turbo as in the turbo has never been touched. i was going to send it to f&f, glad i didn't though with the mess that he's made. the turbo is good for about 30psi, i've had many a conversation with daryll regarding these turbos and where they run out of steam. remember too, i have various other mods so i'm not exactly a "stock" s3.

 

so its holding 27 psi at redline

 

that would be what my boost gauge says at the track

 

The stock S3 turbo can hold at least 27psi, one of my friends has his setup doing that right now. Mine was set to 25psi, although I'm having some other issues right now and it won't give me anything above 15... but that's a different topic .

 

I running 100% Methanol from 16 to 24psi on my 57trim and a 6.2lph nozzle

 

so start a thread! 15 psi low :no:

and i know it holds 27 perfectly fine. it's usually a case of "well mine isn't doing that so yours can't be either." i'm actually getting yelled at to turn the boost up, there is more left in this turbo. now that i have the fuel for it i will.......

 

Ah, it's no big deal right now, I'm pretty sure it's a misfire or something. It's the ECU that's holding me back right now, I watched it and I got 20psi the other night and all of a sudden it dropped to 15 flat, it doesn't creep down, it just holds it there. After it dropped to 15, from that point on, it would not go above 15.

The ECU is seeing something that it doesn't like, and limiting me to 15psi, so I'm going to start with the basics and replace my plugs with some Iridium's for starters, then see how it does. I'm pretty sure I'm going to just skip the whole DAB thing and get a MBC too, DAB is neat but I realize I would never use it once I get the NDE TCS installed, and it will probably hold better with the MBC too.

Any recommendations on MBC's?

 

What Fuel Mods do you recommend for running that amount of boost? I have the 255 walbro and Direct port injection. My AFR' s got a little leaner after installing crane cams and porting the intake. It went from 11.4 to about 12.2. This is at 25 psi

 

return line and bigger injectors will definetly help. the stock s2/3 injectors are pretty big and might be able to get the job done with a return line one.