Real tech discussion on design, fabrication, testing, development of custom or adapted parts for Pontiac Fieros. Not questions about the power a CAI will give.
Whille the S1's are somewhat upgradeable, the aftermarket is focused on the S2's. The S2 is superior in pretty much every way. I believe the S2 was used from '96 on.
i personally wouldnt bother with a series 1.
Much much much more after market support and power with a series 2.
97 and up GTP/ Regals etc. Although i believe buicks got the series 2 s3.8sc in 96.