How much hp/ft lbs of tq does the AC take away from your engine?

 

not sure, but underdrive pullies will eliminate the hp/tq loss

 

about 15 HP last number I saw.

 

Im not sure either but roundman's number makes sense

 

about 5-6% well worth it on a hot day

 

Keep the A/C unless your going to be a Pure drag car. When it's out outside there nothing worse then sweat dripping from your nose because you wanted to gain 5 to 10 Hp. I have the smog pump and A/C on my car both work. In fact i ran 12.06 With my a/c on last month lol.

 

Grab yourself some underdrive pulleys and you should get about 10-15 horse back.

 

Iis it possible to put the pullies on and keep your battery from dying when you have up to 3000W running through your car?

 

probably not.

 

you might be able to get by with some underdrive pulleys if you replace the stock alternator with a high output one that can put out lots of amps, but I just don't know for sure. With that big a sound system, you probably need a bigger alternator already!