hi, i bought a header for my 98 civic d16y8 motor and didnt expect much out of it. the problem now is that im getting horrible gas mileage. i was at about 35 mpg andnow im down to 24. to me, that loss in not worth the unnoticeable hp gain if any.

i think i wanan go back out and buy a used OEM exhaust manifold and put it back on. what do you guys think? if i do go for the OEM one again, anyone know where i can get one used or new for cheap and no cracks?

 

i forgot to mention that i had it on since september and the o2 sensor is in tack and there arent any problem with the header at all.

 

head over to the for sale forum. they can help you there.

 

try checking out the HT fore sale thread, Im sure someone has something. What kind of Header did you get?

 

megan 421 stainless i think.