Dammit!
Just came from the treadmill test and failed. They test at 15mph and at 25mph. HC and CO passed fine on both. NOx barely passed at 25mph and failed by 3 lousy ppm out of about 870 at 15 mph!
Any great suggestions? By the way it is 98 degrees and very humid here today. I decided to turn OFF my manual cooling fan switch for the test and let the EEC cycle the fan during the test.
Plugs and wires are new, O2 sensors are nearly new, new MAC cold air intake, Borla cat-back exhaust, custom exhaust up front with supposedly new hi-flo cats.
I replaced the 3-cat staock system with two cats. The technician thought it could be the cats. He also said the weather was LOUSY for the test today - hottest day of the summer so far.
Could it be poor cats? Could it be cats too far back? The new front end exhaust moved them back beside the tranny and straigtened out the curves. Something else in the engine? It runs GREAT at all speed including idle and WOT.
I'm pissed! Any suggestions would be helpful. I have to get it fixed in August or I can't register.
Jon
Just came from the treadmill test and failed. They test at 15mph and at 25mph. HC and CO passed fine on both. NOx barely passed at 25mph and failed by 3 lousy ppm out of about 870 at 15 mph!
Any great suggestions? By the way it is 98 degrees and very humid here today. I decided to turn OFF my manual cooling fan switch for the test and let the EEC cycle the fan during the test.
Plugs and wires are new, O2 sensors are nearly new, new MAC cold air intake, Borla cat-back exhaust, custom exhaust up front with supposedly new hi-flo cats.
I replaced the 3-cat staock system with two cats. The technician thought it could be the cats. He also said the weather was LOUSY for the test today - hottest day of the summer so far.
Could it be poor cats? Could it be cats too far back? The new front end exhaust moved them back beside the tranny and straigtened out the curves. Something else in the engine? It runs GREAT at all speed including idle and WOT.
I'm pissed! Any suggestions would be helpful. I have to get it fixed in August or I can't register.
Jon