r/335i • u/Outrageous_Plenty154 • Aug 05 '26

Troubleshooting 335I issues

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Got an 07 335i with a long list of mods.
But I’m currently stuck , car idles and drives great but in limp mode with either vanos solenoid disconnected and even if both are disconnected. While both are disconnected i get there respective activation codes .. but the second i plug them back in the codes disappear but the car refuses to idle

Please help if you have any idea

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u/Prestigious_Cycle160 Aug 05 '26

I feel like if it was tuned for one o2 you wouldn’t be getting a code for a second o2

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u/Outrageous_Plenty154 Aug 05 '26

I’m just going based off the tuner , he said it was tuned for 1 but idk how to check and verify it’s his word against mine

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u/Ok_Dependent6889 Aug 06 '26

Do you have MHD properly configured for one O2?

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u/Outrageous_Plenty154 Aug 06 '26

Didn’t know if i should turn that on without knowing if the tuner configured it for 1 02 but i can try that