I barely passed this time and will most likely fail the next time if I don't get this sorted and I don't want to be scrambling after I have already failed so I need some help to get this thing up to snuff so here are the numbers
15mph test:
1660rpm
CO2 14.24%
O2 .21%
MAX AVG Measured
HC 123ppm 45ppm 94ppm
CO .73% .14% .42%
NO 711ppm 321ppm 705ppm

25mph test:
1630rpm
CO2 14.24%
O2 .07%
MAX AVG Measured
HC 103ppm 36ppm 56ppm
CO .93% .16% .22%
NO 613ppm 250ppm 317ppm

 

did you get it good and hot before you went in...I mean run it on the freeway for a few miles?...if so then I would say it is time for a tune up and or a o2 sensor..really need to get em hot before they get tested...just a thought
Cameron

 

Oh I did but like I mentioned the cat is about a foot back from stock so when that is fixed I hope it helps and I can visually check it

 

1. Clean throttle body and idle air control sensor.
2. Clean all of the vacuum fittings on the intake manifold. Some get clogged up.
3. Clean any sensors on your intake. There should be one with an electrical connector.
4. New O2 sensor. NTK ONLY! DO NOT USE ANY OTHER BRAND.
5. New CCV elbows and grommets on your valve cover.

Helping your engine breathe better will go a long way. Run an injector cleaner in your gas tank and manually clean your injectors by pulling them out. Give them new o-rings if they need them.

 

cleaned throttle body and the entire intake when I pulled the intake and exhaust to do the gasket and weld the cracks on the exhaust manifold, did the IAC, replaced TPS cleaned others, figured a new O2 should help

 

Replace the cat before your next test.
It will pass

 

The cat LOOKS new along with some shody exhaust work, though it is about a foot back from where it should be, would that affect operation of the cat since they have to heat up to operate properly, the reason behind the freeway driving trick before the test?

 

i would put the cat back where it should be...it is there for a reason...it has to get hot to do its job correctly... that right there could be the main reason for the high #s.... do what you want from the cat back but I would put the cat in the correct postion...something tells me that 02 may not be in the stock spot??? if not get it where it should be...another possible cause of high readings.
Cameron