Originally Posted by CIVICSPENCE
I didn't really understand, how do they know what you car needs and how to tune it?
If you really want to understand ECU tuning, go to
www.pgmfi.org and start by reading their threads.
My bf tunes cars with their Crome software. He starts with burning a base map on the chip, factoring the car's performance mods. Then he hooks up his wideband O2 sensor and laptop, and proceeds to street tune the car based on the air to fuel ratios at the various rpms and gears. The dyno is the last stop, if desired. It's all very cool to watch, but not everyone gets the big picture.
Your should really find someone from the
www.pgmfi.org board that is local to you to tune your car imo.
I like the Crome software as it is openware and is actively under constant development. You can have features like the check engine light be a shiftlight and program in full throttle launch. It's a good group of people over in that forum.
