[Boca Porsche]

I have been reading about performance chips. However, most people are reporting the effect from them combined with other modafications. Does anyone have any experience with the chip with no other mods? I have an '88 Carerra that is completely stock. I am interested in adding a chip but I am not doing other mods. Do you feel an effect from the chip alone? I also have noticed there are many chips out there. Which one is the best? I drive my car daily. I am mostly interested in response under 4,500 rpm and around town driving.