in the next few months I will be smogging the ol B16a. The setup is: B16a i/h/e, Spoon cam gears, Fields vtec cont. and a hollowed out cat. All the settings are stock. Recent tuneup etc. have been performed. Other than retarding the timing, leaning the fuel out are there any other ways of passing the IM240 emissions test. I plan on using a new cat conv. Any suggestions on what cats work well for emissions yet arent too restrictive?