the header probably gives you more response on the HP side. Unless you are going to bore the intake manifold with the bbtb, it shows little effect. I don't think you will have any torgue gain with your 2.5" catback.
<hr width=60% noshade size=1 align=left>1997 Coupe FX -
Silver, King Kit, 17" Bk rims, 215/40R17 Toyo Guwn, Eibach Springs, Swaybars, SR Airbox, SR Shortshifter, SR Strutbars, SR 4-1 header, SR catback, SR 58mm TB, SR Big Brake, Blue Gauges, Neon footwells, 35% Silver Tint, Magnecor KV85
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