So I hear some people talking about the Mopar Performance chips, and the Lighter weight pulleys

anyone used any of these?

 

I'v got a Mopar Performance PCM in my '93, its definitely a difference from stock, doesn't create miracles or anything like that, but it helps free up some power

 

I would not have bought one but a friend gave me a stage one Jet performance piggy back chip. I didn't notice any performace gain, it advertises 2 to 3 horse, but I noticed a little better milage, about 1/2 miles to the gallon.