I have a jdm b16 in a 91 hatch. and i had to go to emissions so i went and it failed the NOx ... the limit was 2.0 and i had a 2.159..
i was wondering if anyone knows anything i can try to get it down .100
thanks

 

Yeah, mix up some denatured alcohol in your gas. Works for me every time.

 

try some RXP from autozone. put it in your gas tank and you should be straight.
worked wonders for me.