Recent content by Harold Kelvington

58 mm I installed a 58mm throttle body on my L98 and the top speed went from 156 mph to 165 mph. Note: I matched the TB to the plenum and removed the hump that is just in front of the EGR injection holes, which I welded closed. Also I matched the runners to the heads, small amount to make...

Disabled valves I have had my 06 Z06 over at K & N Engineering and they used it to develope there new intake for the Z06. During the dyno testing they noticed a decrease in the low end torque with the valves disabled. Not much but a few. The kit is making impressive HP addition. I am a K & N...

Looking for information on how to disable tire pressure system so it will not affect traction control system Anybody have information or know of some one that has knowledge about system(s)