gaskill
Member
Bought 2005 that was stock expect for callaway s/c. Dynoed on mustang 1750 & was 407/430. Installed headers,cam,heads,exhaust & meth (used only to cool),smaller pulley & dynoed 511/544. Then smaller(2.8) pulley & dynoed 580/520. Peak hp @ 65oo & 8psi when run over. QUESTION: Is it normal for tq to go down this much & if so could you explain why. Thanks for replies
