Anyone has this? how is it? loud? cause a CEL?

 

Any header is going to be loud. Any header will also throw a CEL unless you use an anti fouler.

 

but does anybody has the racelands header and s pipe? what u think about it?

 

you get what you pay for. cheap+cheap=crap

 

^^^ true... All after market headers will be louder. But some will be louder then others. So regardless of the performance the header you choose it will never be as quiet as the OEM header. As for the CEL... you can make your own anti-fouler pretty easily and cheep. If yu can't find a DIY on here, just shoot me a PM and I'll give you the steps to make it. Oh and just incase you weren't familar with the doing this it needs to be installed on the "secondary" o2 which is the one just before the cat.