Here is the problem: I am at the limits of my fuel system (completely stock + 880cc injectors and Walbro 255). We could safely squeeze a bit more out of it as it is, maybe 550whp and 500tq. Maybe. I don't really want a whole lot more power than that anyway. At the moment my power goals are 575whp/520wtq on the Tuning Technologies dynojet and to break the 500+whp/440+wtq mark on Shiv's dyno. At the drag strip, this should give me consistent very very low 11's and around 127 mph. If ten's ever happen, that'll be nice, but I'm not making any predictions.

Now, if you are still with me, I could pay $1395 for the AMS 1200hp fuel system and have the piece of mind that my fuel system is not a weak link in my build up. Or, I could spend less than half that amount and get the AMS Alcohol injection kit. It is my belief that the kit would add an additional amount of fuel, therefore alleviating my need for a higher capacity fuel system in race situations.

Money is a factor, so please don't say "Get both."

Well???

 

id rather have complete peace of mind than have to worry about yet another thing that could go wrong (ie the meth not working, or leaking etcetc)

 

I would get your fuel system in order first. The last thing you want is a weak link after all the time and money you've spent on your set up. The alcohol injection will be great, but it will compliment your whole set up once the fuel delivery issues are addressed. I love my water/alcohol set up on my Evo, it definitely makes 91 octane more bearable.

 

Do you plan on running race gas and alky? Too achieve those numbers with the upgraded fuel system only will still require race gas. Not sure if pump + alchy will do enough.

 

I'd upgrade the fuel system.

Do you have to go with the 1,200 hp system?

I would think there have to be more cost effective packages. The Alcky at least to my understanding is more of an octane booster than an additional fuel source. If your system is at the limit now it would seem to be on the edge of failure and it would definately suck to pop your motor.

 

I would get the fuel system first. The alcohol injection systems that are available just don't have enough safety features to be safe, IMHO. The Aquamist 2d would be the only system I would use.

 

First, let's assume I don't mind the inherent risks of alcohol injection. I don't plan on using it all the time. And, I don't plan to race my car on 91octane with meth injection, although it would be fun to cruise around on 91 octane with meth on occaision. I've seen some pretty impressive results when it is working properly.

Right now, I am SAFELY limited to about 27.5 psi of boost due to my fuel system. Assuming the alcohol injection kit is working properly, would the addition of methanol injection allow me to make more power even if I am already using C-16 or some other high quality race fuel?

 

I asked a well knowin tuner this...and was told NO.

If you want to get 500whp on 91 then get the meth kit.

If you want to run more boost SAFELY i would buy the AMS kit.

 

Its interesting following your build a little, i would think that it is a pretty stout system capable of a ton of hp. Living with 91 oct is a compromise, it really is when the manual even recommends 94. You have also put alot into it, take your time but don't half *** it now, period.

NefBlk

 

meth injection is nice...you can trap 130+ on stock motor with it...go for that.

 

what kind of number are other people seeing on your set up, what is the limiting factor, if there is one?

 

Well, with all due respect to your tuner friend, he's wrong. Adding methanol on top of race gas WILL improve power as it contributes to a substantial in-clyinder cooling effect. This bump in VE is really hard to get by any other means short of one-shot ice chilled ICs or NOS injection.

Trying to get another 20-30whp (only 5% gains) out of your system by the addition of a meth injection system may not be very risky. Especially when you already have enough octane with the underlying c116 to protect you just in case it runs out. You can also rely on SMART leanrun protection under such a circumstance.

cheers,
shiv

 

What you should do can't be answered by anyone else because YOU have to make a decision as to how you're going to spend most of your time driving.

Having a 91oct map is a must, simply because you live in '91 land', and you'll be driving the car around. This won't stress the existing fuel system because you won't be making that much power on 91.

The second map is the big question. For starters, I'd absolutely recommend a meth injection kit, preferrably with a 15 gph nozzle. You won't be sorry.

Now, the only remaining decision is whether to tune the second map for 91 + meth, or race fuel + meth. If you're spending a good deal of time on the street and you don't care about winning the bench racing dyno queen wars, stick with 91 + meth and go have fun.

If you plan on doing a lot of racing and using race fuel, go with a race fuel + meth tune.

Either way, so long as you use the meth kit set up as I indicated, you can keep all that money in your pocket where upgrading the fuel system is concerned.

 

I guess I stand corrected