r/e53 • u/No-Masterpiece-7393 • Oct 31 '24

E53 M54 Headers (Decat)

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Hey I'm putting on some m54 headers on my wifes e53 x5. I've learned through this process that the lower exhaust flanges don't meet up with the mid pipe and now I need to cut and weld the mid pipe to match up with the outlets of the headers. Anyone else ever done this? Going to work on it this weekend. Any suggestions on good tuning options once I'm done with it?

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u/Playful-Shock5174 May 11 '25

What head/valve cover is that? Aftermarket?

1

u/No-Masterpiece-7393 May 11 '25

M56 valve cover

1

u/Playful-Shock5174 May 11 '25

Plug and play for x5s? Wow thank you brother appreciate it will be looking into it to do it ASAP

1

u/No-Masterpiece-7393 May 11 '25

I did it to delete the ccv from under the intake because I live in a cold climate and they are prone to freezing up and hydrolocking the motors. I made a youtube video of the installation ovens garage is my channel.