1996 GMC C3500
This just a question in general. How long does a straight pipe (no muffler or catalytic converter) need to be to prevent damage to the valves? and without a muffler or catalytic converter what percent of HP the the engine increase?
This just a question in general. How long does a straight pipe (no muffler or catalytic converter) need to be to prevent damage to the valves? and without a muffler or catalytic converter what percent of HP the the engine increase?
Oct 25, 2010 at 5:53 PM
