ok i put a megan mid on with an s pipe and alphaworks headers yesterday. everything is bolted up and sounds good ( i have two resignators in the mid pipe) and i did the anti flower DIY but my CEL came on as soon as the car started. is it definitely the 02 sensor? and if i dont fix it today will the car run lean?

 

also i has a different smell to it, is that because i have no cats?

 

bump

 

if anything, the car is going to run rich, not lean

and yes, as soon as it senses the cat is gone, it will start to run rich.

best advice i can give you is to go get the code read somewhere, and make sure its an 02 code. and then buy 2 antifoulers and use them to fool the 02 sensor in the Spipe.

 

or just buy the WeaponR antifowler and call it a day

 

yes it'll smell since you deleted both cats, and as chicotuner said, go for the weaponr one. it's a bit pricey, but it's been proven to work, since i've been on mine for over a year, and i've never experienced any CELs.
aaaand thennn it's header, not headers, resonator, not reisgnator, and anti-fouler, not antiflower.
sorry, just had to throw those in there.