Horsepower

I have a 2001 V6 5 speed. I have the 17" torq thruster wheels. I am running on Mobile 1 0-20 oil. I have cleaned out the entire fuel system after 30k. I out a cold air intake and can really feel the difference in that. I have put on the true duals (2.25" tubing with 3" tips) with flowmaster 40 series mufflers. Anyone have a rough estimate of how much horsepower im putting out without paying for a dyno?
Also my next step is the diablo 3 setting chip? Any problems with these? Recommend something else? How much are they and installation? Where can I find them?

Chips are pointless unless you have severely modified your car.