f. boyle said:
bigger is better and can you imagine the sound of a 5 inch streight pipe, not to mention how fast the turbo would spool. but you are right to much of a pain in the but for the gain. not to mention it would probly only last a week if that before I crushed the tip in to my fender. so 4" stacks will work.
The reason I'm going 4 instead of 5 inch stacks is because I am pretty sure the 4" cause enough scavenging and it would be odd to ba able to interchange stacks between my big rig and my pickup.
pb- how many hp do you make with out the water/meth?
ps- think I found a KW and I think it has 4" duals anyways. so its still interchangable..... oh well. gonna paint em yellowLOL
Chainsaw