I've done 100HP shot rhrough a stock Zetec.
I would not recommend anything about 50 without some tuning.
My 65HP shot (with tuning) got me into low 14s, with just a cat-back exhaust, udp, and optimized TB.


Frank McCoy aka Mod-deth aka Mid Life Crisis aka SVT Doood aka mcgainer is a SCAM ARTIST Pre98 Zetec - Some Mods