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G87 / G42
BMW M2 and 2-Series Coupe
| 02-09-2025, 05:25 PM | #1 |
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JB4 & downpipe
I am looking at going with a JB4, but I was was wondering about clearing the CEL with a catless DP. Is that the difference between the "carb compliant" JB4 and the one that does not mention being carb compliant?
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| 02-09-2025, 07:21 PM | #2 |
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JB4 can clear the code, but it will come right back. The only way to turn off CEL for a catless downpipe is through a tuning platform, such as BM3 or MHD+.
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| 02-09-2025, 08:52 PM | #3 |
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There's no power advantage to running catless. Plenty of no cel dp options. Just do it the right way.
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2025 M240i Xdrive TNM - Dinan Springs - CF Goodies - More in process
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| 02-09-2025, 09:16 PM | #4 | |
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| 02-09-2025, 09:27 PM | #5 |
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Active autowerke for best price.
Fabspeed for best quality.
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2025 M240i Xdrive TNM - Dinan Springs - CF Goodies - More in process
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| 02-10-2025, 01:48 PM | #6 | |
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Fabspeed no CEL downpipe with HJS 200 CEL cats. Both will provide the same results, but HJS has a louder sound
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