Post by
s13rb25det »
https://forums.nicoclub.com/s13rb25det-u27134.html
Mon Nov 12, 2007 6:39 pm
hey, I moved down to the peoples republic of california from washington and has have a very hard time passing smog in my 91 nissan 240sx. any way it was a gross polluter the first time I took it in for both hc, and nox, so I di a complete tune up and installed a new cat and retested again it failed it did come down a little in the nox from 2200 to 1500ish. so then I decided that I would try putting alchy in my tank and trying it again, so I put in 2 gallons of denatured alky on a close to empty tank and retested, BOOM!!! super low smog numbers!! my nox went down to 400 and both hc and co pretty much didnt exist. so just a heads up to all you guys that this alchola in the fuel tank trick does work with no bad side effects. hope this helps some people