well
my setup till now
was

strup header + tanabe axle exhaust.

i was throwing off CEL (of course) so i used the anti fouler for second o2sensor.
boom couple days later. CEL is gone.

now
2 days ago. i took off the tanabe concept G and put back on the stock exhaust.
and today.. im throwing CEL again.!! ..

will this CEL go away.?? is this happening becuase i took off the exhaust and went back to stock..?
need sum help!




aaa edit!
also a second question.

its souding almost as if im running stock header.. T.T like there is no loudness coming from the header (engine) area.. is this normal..?
i thought even thought running stock exhaust
the engine area. still would have a loudness when i rev up. or drive...
need sum help

 

nobody knows what the problem is..?

has anyone gone back to their stock exhaust like i did?