Went to get the TTA tested today and it failed.
I used the "guaranteed to pass". The car is mostly stock except for 37 LB inj. and TT chip.
Reading Limit
HC GPM 1.34 2.25 PASS
CO GPM 30.64 23.74 FAIL
MOX GPM 1.67 3.25 PASS
My plan of attack is to order a TT emissions chip, change oil, new plugs and then re-try. The O2 is a delco and is about 1.5 years old.
I wanted to see if this was good plan before proceeding????
Thanx:smile:

Reading Limit
HC GPM 1.34 2.25 PASS
CO GPM 30.64 23.74 FAIL
MOX GPM 1.67 3.25 PASS
My plan of attack is to order a TT emissions chip, change oil, new plugs and then re-try. The O2 is a delco and is about 1.5 years old.
I wanted to see if this was good plan before proceeding????
Thanx:smile: