its a complete replacement of your stock ecu, only the 00 to 02's
2003+ have a drive by wire system that isnt compatible with the pfc
you can manipulate absolutely everything with the ecu
for lift engagement, lift disengagement, rev limit, af ratio, vvt angles, ignition timing etc.
some honda fanbois like to compare it to hondata's reflashes, but a more accurate comparison would be to a k-pro unit.
i have one, and now is the best time to get them from monkeywrenchracing.com
they now come with free pfc commanders that allow you to adjust the settings yourself
they also have preloaded maps that best suits your current mods
i have one and its the best mod i could have done for my '02 gts, now being able to land lift on the 1-2 and 2-3 shift now
im at 180whp and 130wtq with some tuning to go
btw it connects to your vehicle under the Hood
, someone has pictures floating around here
all in all its about a 2 maybe 3 minute install