Ok This Saturday is D-Day for my car, we are changing the ball joints and installing the exhaust system, and the exhaust system will consist of 2.5" pipe from the down pipe to a break point, where we are installing exhaust flanges, and after that more pipe to an offset 2.5"inlet/outlet flow master 40 series delta to a nice tip, but once I have all thi installed, I am going to have to hook up a serial port out (I think) to the wiring in my car, ( I have no ideas which ones yet, hopefully someone has schematics for setting this up and what i need to get for parts from the source to make this plug, and I need to start data logging, so I I can find if all my sensors work and see what parameters they are set at, I also need these logs because I currently have swapped in a 3400 out of a 99 Chevy Venture and swapped it over to standard, and I ALSO NEED TO KNOW WHICH WIRE i TAP INTO FOR THE TACHOMETER. and I also am going to get a custom chip burnt for my setup. I am currently using all the sensors and wiring and ecu from a 91 3.1L cavalier with non a/c and I also have deleted my EGR and AC. I checked out the one on 60degreev6.com, and i am unsure as if this is going to be the chip i should go with. Does anyone who has experience with tuning or data logging have any insight for me?