Thanks for the heads up! Trying to decide on what I wanna do. I don't have a windows pc so, tuning would be difficult.. unless I partition part of my HDD for windows on my macbook.
Everyone seems to say that this is the first and best mod you can do for yourself and your Si. Was thinking of doing FP and Intake or Header together to start out. What do you think?
Also gotta get these new coils on!