NOx
 

what would lower NOx levels on a 92 accord?

Re: NOx (dabigrog)
 

tune up and a new cat, new pcv valve, egr valve
i have heard that stuff you put in your gas tank works it says it lowers your emission.

Re: NOx (vjace)
 

only need to lower mine by 80 =/
how much egr valves run for?

Re: NOx (dabigrog)
 

clean out your egr ports and check your O2 sensor.. https://honda-tech.com/forums/images...es/emsmile.gif