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Originally Posted by Speenybean
I know this is f90 but looking for any and all advice. Thanks everyone.
So turns out bank 1 cylinder 3 injector failed and stuck open. POS Bmw is Not covering it through the extended injector warranty due to claims that my car is tuned and has voided it. Waiting for Indy to confirm wether I need EU5 or EU6 injector. My question is should I replace just the faulty injector? Or all 4 on that bank? Or just replace all 8 on both banks? Also my Indy does not have access to ista for which people have told me the car will need to be coded one new injector/s are installed. Am I able to drive the car slowly to dealer without injectors being coded without harming the vehicle? Thanks everyone for your help.
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Unless you know exactly which type of injector, then its should be OK to replace just the faulty injector. If cost is not too high, it would be good to replace all 8 injectors to have more uniform fuel spray and combustion among all 8 cylinders in my opinion. I might be too conservative on such things, but I would always assume balance is key....