I made my sr pass with flying colors on hot rod status. Here’s what I did to make sure it passed… (keep in mind I even have hks 264 step 2 cams)
-1 year old catco cat
-brand new O2 sensor
-brand new water temp sensor
-brand new spark plugs
-filled up with 94
Results:
ASM2525
-HC ppm 74 / 318
-CO% 0.40 / 2.52
-NO ppm 390 / 3353
-dilution 15.4
Curb Idle Test
-HC ppm 133 / 300
-CO% 0.54 / 1.50
-dilution 14.7