03-18-2021, 11:58 AM | #45 |
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im fairly confident it will last even longer than that. We have not one fail from use and we have been selling them for a long time
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03-18-2021, 01:18 PM | #46 |
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03-18-2021, 04:34 PM | #47 |
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I have the AA highflow catted DP. I have had it about a year. I enjoy the sound on my stock exhaust and the improved performance. It is just enough louder than stock for my tastes.
I have just recently started get the CEL for catalyst efficiency. I will clear it and it will come back after a few days. I do not run any burbles. I reached out to AA and they have been great. They said just ship it back to them and they will replace the cat free of charge. I have to pay shipping to them, but they pay shipping back. They say to expect a 1 day turnaround time once it's received. I am still pleased with my purchase as I was able to pass my obd2 emissions check a few months back. Once I have the time to remove it and ship it back, I will report back on the experience.
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03-18-2021, 09:02 PM | #48 |
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03-20-2021, 09:48 PM | #49 | |
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03-21-2021, 07:10 PM | #50 |
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I went with CG will update once installed.
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03-22-2021, 10:40 AM | #51 |
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07-09-2021, 05:04 AM | #52 | |
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Just a thought
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1) you did not measure or keep a consistent distance between the comparisons 2) decibels are given on a logarithmic scale, so small changes can equal fairly large results. |
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07-09-2021, 11:01 AM | #53 | |
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But to answer your question, the first two before/after videos were filmed with the same phone at basically the same distance/orientation relative to the exhaust so i considered the factors above to the extent possible. dB readings were from the same phone. Yes, i know its logarithmic. The bottom line is that OEM DP to fabspeed with no change in exhaust is almost negligible given how much the stock exhaust mutes everything. The resonator delete is what made the real difference. The final video was filmed with a different mic (GoPro hero8), different orientation, engine under load, etc. |
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07-09-2021, 12:52 PM | #54 | |
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07-09-2021, 03:57 PM | #55 |
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08-08-2021, 05:27 PM | #56 | |
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No CEL guarantee is nice, but will any of these pass a Georgia emissions test? If that means removing it once a year and putting the stock one back in, forget it.
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08-08-2021, 08:01 PM | #57 | |
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The others listed guarantee no CEL and should get the emission monitor ready, but in theory can technically still fail a visual inspection (very unlikely). I've been running fabspeed for 2 years and have never gotten a CEL and my emission monitor is ready. Same should be true for CG. |
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08-11-2021, 04:12 PM | #58 | |
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12-18-2021, 11:27 PM | #59 | |
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12-19-2021, 12:49 AM | #60 |
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In california no, it will fail the visual inspection.
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12-19-2021, 10:52 AM | #61 |
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+1 no downpipe is legal in CA as it needs Carb approval not just EPA
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12-19-2021, 04:35 PM | #62 | ||
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12-19-2021, 05:10 PM | #63 |
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im not worried on the visual inspection. I just dont want remove and reinstall every two years. Interested in a high flow catted DP and possibly bungs on the sensors so it gets less of a reading. Has anyone tried this or have recommendations on catted dp with bungs?
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12-20-2021, 01:46 PM | #64 | |
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Get a DP that basses OBD2 check like fabspeed or AA. The only thing you have to worry about is the visual, which i also wouldn't stress about if you can pass the OBD check. Note that in CA you also need to be on 100% OEM DME software when you go in due to CalID/CVN checks. |
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12-21-2021, 10:24 AM | #65 | ||
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12-21-2021, 01:19 PM | #66 | |
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The opposite is not necessarily true - it is possible to not throw a CEL, but also not get emission monitor ready. I have been running fabspeed for more than 2 years and no CEL ever and emission monitors are ready. AA should be the same. |
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