03-27-2024, 12:56 AM | #1 |
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Valves not opening properly
When clicking my M1/M2 buttons, my valves don’t open unless I blip the throttle.
Anyone else have this “issue” or know what I can do to fix it? |
03-27-2024, 09:40 AM | #3 |
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03-27-2024, 09:52 AM | #4 |
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Wonder if they're sticking? Mine open/close with the buttons without touching the gas.
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03-27-2024, 03:54 PM | #8 |
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03-27-2024, 05:28 PM | #9 |
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Same in my F82. Only in Sport or Sport mode would the valve open once I blip the throttle.
If you want a really loud start up, you can turn your car to “On” but not have your foot on the brake. Then press M1 or M2 (whichever one has Sport/Sport+ for engine, tap the gas and you’ll hear the valve open. Then start the car normally. It’s gonna be loud! |
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03-27-2024, 05:31 PM | #10 |
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This is standard operation for the stock software, the valves will only open under certain load conditions and modes or through the service/testing modes. If you want full control you need a tune or valve controller.
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03-27-2024, 08:27 PM | #11 |
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You can code yours to always open on sport/sport+!
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03-28-2024, 09:26 AM | #12 |
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Easiest thing to do would be to download bimmerlink (www.bimmerlink.app) and buy one of the recommended OBD adapters (the nexus nexlink is one of the cheaper options on the list and is somewhere around $30). It allows you to open and control the valves whenever you want.
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03-28-2024, 09:55 AM | #13 | |
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The valves fully open with the app which is great. I think it's much better than buying a valve controller from dAhler for $500. Just my $0.02
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04-11-2024, 03:21 PM | #14 |
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You can also install a CG Precision VSC-2 to control the valves with a remote control from inside the car. You can even use a homelink button to control it using the VSC-2. I have a used one for sale if interested.
https://f80.bimmerpost.com/forums/sh....php?t=2092379 |
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04-14-2024, 12:43 AM | #16 |
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On my 2016 M4 that was totalled the valves would immediately open when switching to sport/sport plus. This is with Bootmod3 stage 2 tune. The 2020 M4 I have now which has the same tune I notice the valves do not open until you blip the gas. Not sure why.
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04-14-2024, 09:27 AM | #17 | |
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Were both your M4s the same transmission? |
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04-14-2024, 11:15 AM | #18 | |
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04-22-2024, 10:24 PM | #19 | |
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04-22-2024, 10:36 PM | #20 |
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this happened to me, i had to reflash my tune and it fixed it.
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04-22-2024, 10:43 PM | #21 | |
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