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Old 02-14-2007, 07:04 PM   #21
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Originally Posted by RotorNutFD3S View Post
Haha! No, that's not why. It was the numbers. It was just putting out slightly more pollution than the limit. Get the cat in, pull back some of the fuel, make sure everything is fresh, and do it again.
The cat will lower the exhaust pollution numbers.
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Old 02-14-2007, 07:28 PM   #22
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You can pass the actual emissions test w/o a cat if there's no visual. I was asking for the numbers on the actual results sheet. Those numbers tell you what you need to do to pass. My old protege would fail at stock timing, so I backed the advance down to 2* and passed. If you're that close, something little can mean the difference between pass or fail. With a programmable ecu, you CAN tune the car to pass as-is.
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Old 02-14-2007, 07:31 PM   #23
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Originally Posted by 92yella View Post
Maybe it was the fact the CAT WAS REMOVED!
Maybe not. I've probably done fifty emissions tests and had a visual cat check once. They no longer look under the hood either. And there are emissions laws regarding engine swaps. Get the point? What really matters is what's coming out of the exhaust pipe IMO - that's what's polluting.
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Old 02-14-2007, 07:38 PM   #24
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just buy a used cat...there is one on miata.net right now.

its how I got my FM cat...but then again I don't have to 'pass' visual inspection anymore, well...technically I do but you get the point
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Old 02-14-2007, 09:32 PM   #25
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Yeah. Well, I'm just trading for the Jackson High Flow cause it's free, put it on there, fixing the tune to pass, and going back and passing.
Every place in my county does a visual check for the cat, even if they have to put a mirror under the car. Evidentally there was a huge bust on the local testing shops recently, that's what I was told anyway.
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Old 02-15-2007, 02:22 PM   #26
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$50 "tip" and you can pass... you just have to find the right shop.
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Old 02-15-2007, 05:55 PM   #27
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$50 "tip" and you can pass... you just have to find the right shop.
Yeah, I'd love to find the right shop! But I don't think that there are very many around here, and not any that are talking, that's for sure.
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Old 02-15-2007, 06:22 PM   #28
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so what exactly didn't pass?
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Old 02-15-2007, 06:56 PM   #29
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yea,show up with a $100,they woulnt even put it on the rollers.
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Old 02-15-2007, 06:58 PM   #30
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Well, they did 2 tests, a 25/25 test (25 pounds of load at 25 MPH) and a 50/15 test (50 pounds of load at 15 MPH).
Here's the results:
HC-ppm - Pass (25/15) Fail (50/15)
CO% - Fail (25/15) Fail (50/15)
NOx ppm - Fail (25/15) Fail (50/15)
I can't remember the numbers exactly, but I do remember that everything was just above the allowed limit, except the one thing that did pass, and it was actually well under the limit.
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