My DD needs tune up to pass emission

[00CelicaGT]

dude, i will bet you if you retard your ignition timing all the way. that shiit will pass first shot..

I highly doubt he will know how to retard his timing if he can even do something as simple as changing spark plugs, wires, and etc...

[Jecht]

I highly doubt he will know how to retard his timing if he can even do something as simple as changing spark plugs, wires, and etc...

x2 if he is asking how to pass emissions, he probably can't retard the timing on his Civic. As per checking if the cat is okay, just unbolt it and check the inside to see if its intact. Or you could just find a testing place that will let you retake the test for free if it doesn't pass the first time you paid for it and keep fixing things until it passes.