Originally posted by GoldenTour:


what am i missing? can someone help me diagnose this before i buy precats and main cat?

by the way, I do have gutted precats but retained the main cat. heres a pic of the data from the smog test. Notice how my Hc levels kicked up on the 2nd test. and this causes the rest to come up.





It failed because of high hydrocarbons.

Was the catalytic converter all heated up and ready when you did the test? It might be good to get a Scanner to make sure it was ready before going for the test.

In addition, maybe having just the main cat isn't good enough for CA emmissions.

"Always do the cheap and easy ones first." 1996 V6 ATX 96K miles