Does the porting, polishing and installing of bigger valves hurt the already weak low-end torque of a naturally aspirated 2.5 litre engine? I don't drag race my car and having some grunt comming off of a corner at the road course is more important to me.

The Original Owner of 1998 SVT Contour #3384 of 6535, Toreador Red/Midnight Blue, Assembled September 3rd, 1997 Also the Original Owner of a 1998.5 Contour SE Sport V6 5-speed, Vibrant White/Greystone Sport Cloth, Assembled August 6th, 1998