u/Delicious_Note_8563

Got an 08 335i as a trade last year, it’s had a bunch of upgrades, stage 2+ with supporting mods. Drove it around a bunch with no issues but the last few times I’ve driven it’s not been happy.

Took it in for diagnostics at a local Euro / Performance workshop after codes thrown 7th December, they “couldn’t replicate the issue, codes cleared customer to continue driving” - as such I’ve kinda lost faith in them. Only other workshop nearby is booked for a few weeks.

Has anyone else had these codes pop up, what ended up being the issue?