I don't believe in them for most N/A cars. Adding those bolt-ons you mentioned shouldn't increase airflow enough to push the ECU out of it's maps. My 12v car has a head with big valves, cams, intake, exhaust, etc, etc.. and a GIAC cam chip runs it perfectly. No crazy trim adjustments or anything.
Running that FPR on your mildly modified motor will probably piss off the ECU because it has to adjust to the unexpected fuel reported by the O2 sensor, or it'll be unable to adjst and rich you will run.
I don't think it'll hurt anything tho.
Modified by FatSean at 10:07 AM 9-18-2003