ok..so ive been wanting to install some headers on my gs300...but it really seems like a pain with the o2 simulators and everything...and i was wondering why you even need o2 sims? they say the check engine light will come on...but i dont really understand why..(and this is keeping the stock y-pipe...so it doesnt have to do with the cats) any input would be great
thanks

 

i got headers, b-pipe and blitz nur spec....my y-pipe is stock....no CEL from O2 sensors.

 

any idea why so many ppl say they get it? and what headers do you have? (also...what is a b-pipe...ive head of it...but i dont remember what it is..)

 

Great question, what headers are on the market for a GS300. I've searched and the only thing out there seems to be the OBX.