I dont' want to sound like a noob, but i just purchased a new pully. I just completed a FMIC + comptech supercharger set up not to long ago and what it seems like on my boost gauge I am making 1 psi less. Instead of going with a 7 psi pulley, I just went a head and bought a 10 psi pully. Its made of aluminum and should be here a month from now. They said they had to make it or something I don't know. I think the company was APS and I talked to Lee. Anywhom, I would really really like to do AEM EMS but I want to put the pulley on. So it leaves me with two options, buy an emanage or buy a vafc/safc. I'm broke right now, school just started and my mongomery gi bill hasn't come in yet. Plus I just quit my job and I'm trying to buy a shifterkart. So it looks like vafc or safc. I don't really care about lowering vtec or anything. I just want something to be safe and let me use the pully. so here is my question, will vafc be able to support 9 psi? It said on tech2motorsports.com that it needs some sort of engine management, also one of my friends told me

soo please help and keep the flaming to a low level

 

Congrats on your purchase... And good luck with your plans, I am in the Navy, waiting to get out and purchasing an S. (7 Months left, Thank GOD!!)

 

Thanks =) 7 months huh? lucky lucky! I still have quite a while left.

 

Here's two common misconceptions:
1) You installed some charge cooling and now the boost reads lower. So you think you lost something.

Keep in mind that if you cool a given volume of air it condenses and exerts less pressure, but there is the same amount of air there.

Now, you are running a system that uses the boost to work out how much fuel to add. As the boost now appears to be lower the fuel pressure will also be lower and you will run lean.

Now you want to install a 10psi pulley, presumably to get some use out of more of that boost gauge. So not only will you still be lean, but you'll have higher pressure too. And you want to fix this with a V-AFC?

2) The second misconception is that you can save money by spending it on smaller pulleys and ghetto tuning devices. How much do you think engine rebuilds cost?

You have a $30K car, a $5K supercharger, probably $1500 worth of intercooler, and you want to tune it with a $300 device?

 

Isn't a VAFC worthless on the comptech for engine tuning becase the map clamp leaves little room for adustment? I thought the VAFC only worked with vortech?

 

Both Comptech and Vortech use a similar MAP clamp so the argument is the same for both. I think the Vortech clamp value is a bit lower so you have more 'safe zone' to play with but the fact is the max value the ECU can handle is the same.

 

Increase boost = leaner condition = need more fuel. You cannot "add" fuel with a VAFC effectively enough to be safe (if at all). You can only remove fuel with it. This is not a cheap past time. Why would you make such mods knowing you can't afford to finish it? It sounded like you had the ideal situation with the stock Comptech A/C setup. But I suppose the grass is always greener on the other side of the fence. Unfortunately, it takes a lot of money to jump the fence.

 

yeah i guess you guys are right. i'll just use an emanage system for the time being rather than a vafc

 

I don't mean to sound like I'm flaming, but I don't understand the financial description. Why woud you quit your job and THEN look to buy a shifter kart on top of trying to tune the S with the costs associated with that? Hope you aren't planning on going into credit card debt and then look for any easy way out by declaring bankruptcy.

 

I was wondering the same thing....