I am trying to figure out if i should buy the comptech s/c with the aftercooler or not. What do you all think? How much extra power does the a/c add? I know it lowers intake temp by 50 70 degrees. If i choose not to buy it will i be sacrificing anything besides power?? How many have it without the a/c??

thanks

 

Personally, if I went with the Comptech instead of the Vortech, I would get the aftercooled version. Why? I know I would eventually want more power and would get the aftercooler anyway, so why not save money and get them at the same time? In case you couldn't tell, I also paid cash for my S2000. I'm not paying anymore than I have too!

 

Comptech blown S2000's have been running reliably for years before they introduced the A/C. They only did this in response to Vortech bringing out their kit (with A/C). And they were putting out similar amounts of power before the A/C as they do with. Comptech knew what they were doing before the competition came along and who knows, if Vortech never happened, would Comptech have introduced an A/C?
However, as "hukares" so aptly put it, getting it with the A/C now will be an advantage if you ever wish to bump up the output. The A/C is kinda like insurance. You may not really need it (if you keep it stock out of the box) but it does give you that margin of safety that cooler intake temps can provide. For me, I wanted the "insurance", so I got the Vortech at a time when Comptech hadn't met the competition head on as yet. The final choice is up to you and your wallet.

 

I say it depends on where you live. Hot and humid...run an AC...if not, then don't worry about it.

 

Many Comptech SC where running fine without the A/C, after installing the A/C they started to run Lean

 

I suspect there may have been more to it than this. In most cases where an A/C was added to an existing Comptech set-up, other things were done at the same time. It would be nice to really see how many with ONLY an A/C added and nothing else done, ran lean when it didn't before. Guys were possibly putting on a smaller pulley to compensate for the slight loss in boost as a result of the A/C. They may have also added the ESM when they didn't have one before. They may have altered their injectors, added other piggy back devices, not changed their plugs and re-gapped them, etc.

 

In my case was like this, I was runnig ok without the aftercooler, then installed the Aftercooler for security reason more than 10 whp and I started to run lean.


Juan

 

That's interesting. Usually, the slightly less boost pressure as a result of adding an A/C will more than compensate for the cooler intake charge.

 

Xviper (your name is?)

According to comptech their aftercooler drops .5 psi the boost.

I remember that "Nobody" used his FRP to control the lean condition at high rpms, he was one of the first in having the AC

 

Keep in mind that the fuel is proportional to pressure. So if you cool the charge air it exerts less pressure and hence you get less fuel even though you have the same mass of air. Hence lean.