Originally Posted by LTracer
In short there is no 'target #' per say for most of the parameters you can to tune. The parameters depend on many factors such as mods/climate/fuel etc. Two identical cars could individually perform better with custom tunes.
Here's a starting point:
The two books at the bottom of that page are great for those with little background. It takes studying, time, and patience if you really want to understand your car and what the heck you are tuning.
ive accually allready bought the jeff hartman book and have been reading it . i ve also been on the opensource forums and have been trying to learn , but im such a noob at ecu tuning . im more of like ohh my water pump is shot let me fix it and upgrade it while im at it . but looking at some of the dynos of tuned 07 2.5i's man thats some untapped free power . i realize that in modern cars its all about the ecu . ive managed to pull my stock rom . and ive been checking out how to use the software , i feel comfortable using it i just like i said dont know what i should be tweeking and why