Will this stuff work
 

Im having problems passing emissions has anyone tried using smog or emissions pass? Will it be ok to use on rotaries?

i can't answer that question but i would suggest reading the faq..it has a how to pass emissions post.

I was shocked that I passed emissions but I was glad that they only had one sniffer for the dual exhaust. Yay!!!! Plus I'm in Illinois. Tougher to pass in California, I believe. With their two cat cars.