10-18-2020, 12:28 PM | #1 |
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Preparing for BM3 Stage 2
My car is an 18' 440i with 1800+ miles on it and I have already flash BM3 Stage 1 93oct.
I've ordered the following: VRSF 4.5" Catless Downpipe Agency Power B58 Short Ram Air Intake Valvetronic Designs Axel Back Exhaust I have 2 questions: 1. Can I run Stage 2 93 AGG without a mid-pipe? 2. With only 1800+ miles on the vehicle do I need to replace the plugs? I've read that I should swap them for NGK 97506. Thanks in advance for your help. |
10-18-2020, 12:45 PM | #2 |
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All that stage 2 requires is a high flow downpipe. The rest of the bits are not necessary, including switching out plugs.
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10-18-2020, 01:57 PM | #3 | |
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2) No, but when I replaced mine (gapped 0.022"), I went from 32mpg to 36mpg on the highway (50mi trip on 85 cruise). |
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10-18-2020, 11:10 PM | #4 | |
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10-19-2020, 09:13 AM | #5 | |
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2- No Enjoy
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