Originally Posted by shiv@vishnu
Stg 1-- stock and mild bolt-on (intake, cat-back, dps, etc,.)
Stg 2-- intake and no cats
Stg 3-- intake, no cats and FMIC
There is some flexibility with those requirements of course. Just don't use a map that is too aggressive for your mods.
Do some datalogging of stage 2 and stage 3. High flow cats flow at about double the CFM of stock.