Soundstream,
erm, I am not sure why in the 1st place u got SAFC II, if u r & d a bit u will know dat most of the APEXI electronic tunning products, such as SAFC, SITC, RSM etc etc r just being derived from POWER FC (in my own opinion) coz the way Power FC together with the FC commander (display) can do most of the stuff dat the inidividual gadgets can, n of coz more accurately. As for tunning the air flow, i believe nothing beats a full comp, in this case POWER FC is quite a standalone on its own albeit it is car specific. I think further more SAFC cannot do inition timing if i not mistaken....dats y ....in the market place ...u get tons of SAFC up for sale :)
If u search a bit more, u will even notice dat the world reknown NORRIS DESIGN evo was running power fc at some point of time churning out more than 600 hp !! (if my memory is not mistaken) 50-60 bhp increase yes easily.....however it all depends on who does the tunning n how much hardware u have......anyways in our beloved club, we have few members running on power fc n have achieve fantastic results on track n on street.....come TT with us join us on our runs n u will know our experiences..... of coz not to discredit other EMS, however i believe at the range of 4K .....nothing beats the ROI of a power fc...dats wat I call...COST EFFECTIVE.....n of coz if u r & d furthe more, W. is from a JAP tunning house...n fyi, his current Jap shop in Jap homeland has produced some fantastic runs n of coz time attacking the famous Tschukuba circuit......well he din tell me dis....HYPER REV n LANCER EVO jap magazines did :) (i just bought a few from kinokuniya ) hahaha
for the body kit i seriously suggest u hooked up with our S9....he is very well versed with the body kit stuff n sources around in town......n of coz he is super nice chap ah...dun bully him lor :P