hi all. i have a quick question concerning exhaust headers. it is my understanding that a stainless 4-1 one piece unit is good for producing high end power, but is detrimental to low end hp/torque. on the complete opposite end of the spectrum, i've also heard that a ceramic 4-2-1 two piece unit will produce better results throughout the entire rpm range, but will never recognize the high end output that the 4-1 would. is there any truth to these statements? i am considering a ceramic 4-2-1 setup (most likely dc sports) for my 2002 ex. i am more interested in a quick, reliable daily driver rather than a full blown race machine. also, is there any real benefit to wrapping the header on a daily driver. it seems that the heat wrap would lower the ambient air temperature in the engine bay. could this possibly make any underhood, open air element perform better? any input would be greatly appreciated. thanks...

 

the differences are not as dramatic as you have suggested...

a good 4-1 will be different to a good 4-2-1 but it is "horses for courses..."

(a daily driver is more benifited by a 4-2-1)

a heat wraped header may deteriorate quicker than a non-wraped one.

reducing under bonnet tempratures is good

HPC coating is great...

open element air filters should be shielded and seperate from engine bay heat. get a CAI duct from the front bumper to direct cold air at the filter...

i hope i have helped some.

t..