New to this import thing

[spray_bombed]

hey whats up everyone? Anyways, I'm new to this import thing, and I just got my hands on a 90 lx coupe 5 speed. I've done the basics: Intake, headers, high flo cat, flywheel, ignition coil, plugs, wires, 2 fart cans (hey what can i say? I'm 18 and still love the pissed off weedwacker sound). But since I put the headers on, my check engine light has been coming on once my motor is warm. I'm thinking I need a new o2 sensor but do I need to reset something in the ECU so that it wont burn off extra gas (put all my money into the car and need all the mpg I can get). Thanks alot for the help guys

[cali-racer]

u have to get the code first before u do anything so u know what it is exactly ur dealing with!...o2 sensor's are expensive

[JdmH22Cb7]

u have to get the code first before u do anything so u know what it is exactly ur dealing with!...o2 sensor's are expensive

my friend had the exact same problem and it was his o2 sensor and they cost around 65 at autozone new also check the code and reset by taking the fuse outta the fuse panel underneath the hood read in your owners manual or get a chiltons manual and it will explain better how too

[Akira_kj]

make sure the o2 sensor got plugged in all the way, you did a header right so the o2 was removed and put in the new manifold. make sure it got plugged all the way back in, cost less than replacing it.

yes 80$ is spendy for a new o2 sensor.

Good Luck.

any reason for 2 mufflers? Did you split the exhaust? 2 each there own.