08-25-2018, 12:27 PM | #1 |
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Performance exhaust & Intake
I’ve just bought a 2015 M5 and whilst it’s awesome it doesn’t sound like 560HP.
I’m considering adding a Cat Back Exhaust and an Intake... do I have to add a tune to avoid any potential issues? Or will it be fine just changing out the parts? |
08-25-2018, 01:51 PM | #2 |
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No tune required for cat back and intake, I'm currently running those same mods on stock tune, no problems. Now if you do catless downpipes then you'll want to get a tune for sure.
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08-25-2018, 06:44 PM | #4 |
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09-08-2018, 01:48 PM | #5 |
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because leaving the catalysts there are no problems and without catalysts you have to make a safe map?
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09-09-2018, 02:33 AM | #6 |
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Drives: M6 14 GC frozen grey & 21 M2C
Join Date: Jun 2016
Location: Saudi Arabia
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