Im doing a full tune up my 2003 325xi beamer & i wanted to get some info on if it would be a good idea to replace my coil packs and boots when changing my spark plugs or just replace my plugs?
If you don't have any misfires then I would skip the coils unless you just want to spend the money, Save the old ones if they work well as you might want them later.
You could add a set of high performance coils which are not that expensive.
Thank you. So I should just replace the sparks? Because I don't have any misfires.
This is entirely up to you.
NGK plugs, have a boot or 2 in case of cracks.
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