01-04-2021, 02:42 PM | #23 |
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Installed the catless downpipe today and it fixed the sound issue that I had. Now the car feels right and even better from 200 cell catted to catless. The burbles are more litt and I feel the turbo breathing better. Also the start up exhaust roar (bm3 tune) sounds louder and meaner.
Here are the pics of the fabspeed 200 cell HJS catted downpipe. It doesn't look too bad but maybe the inside got damaged or clogged somewhat. Last edited by D CHOI; 01-04-2021 at 03:06 PM.. |
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01-04-2021, 06:33 PM | #25 | |
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01-04-2021, 06:34 PM | #26 |
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01-18-2021, 05:30 PM | #28 |
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To much fuel to make more aggressive pops will damage any cats. On the old N54 cars there was a way to make those cars pop and bang real loud and it destroyed the cats real quick. Here is a picture of my fabspeed cat after 8800 miles with a mild tune and stock bmw pops. Just like new.
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01-20-2021, 05:30 AM | #29 | |
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01-20-2021, 03:41 PM | #30 |
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I will tell you from experience in the legal field, that federal emissions warranty is barely worth more than the paper it is printed on. The hoops you have to jump through for enforcement are absurd, and even going to court you face an extremely uphill battle thanks to some bad precedent (at least in CA, I can't comment from experience outside of that jurisdiction).
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01-21-2021, 01:04 PM | #31 | |
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I'm positive it exist and is mandatory, as when this summer, the dealer handed me a print out of my remaining coverage and it listed this specific coverage that was itemized separately. This endorsement also listed in the back of your vehicle's manual. It's a federally-mandated law, not an optional service that they can pick and choose to enforce. https://www.consumerreports.org/cro/...-bmw/index.htm . |
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01-22-2021, 06:12 PM | #32 | |
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02-02-2021, 08:07 PM | #33 |
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Another update on my sound issue. It turns out my resonator on my fi exhaust had some leaks/cracks. Now the back pressure is back and the pops are more solid and aggressive. Exhaust note sounds more tight too.
Not sure how the resonator got damaged but I'm thinking it's the probably the aggressive burbles and the popping. |
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