What did you do for your M3 today?

[0-60motorsports]

I would suggest reinforcement plates if using the GC plates, they seem to have less surface area compared to others.

I wish I could use TMS plates, but they don't work with my TCK's unfortunately.

Yes Sir Already have plates for many years.

[hogger453]

Valve adj. Vanos, plugs oil change all done. I rebuilt these as well. One surprisingly was a little rough.

Not a tick, not a rattle.

Simply smooth harmony from the engine

[Marc E46M3]

Did a pretty substantial audio upgrade recently, but tried to keep everything as OEM+ and reversible as possible.

Swapped in an XTRONS head unit for wireless CarPlay and optical out, Morel Virtus components up front, MATCH UP 8BMW DSP + UP 1FX amp, and a HELIX IK ES10.1-DVC2 10" sub. Doors and rear deck were also treated with sound deadening. Amps are hidden in the factory amp location, the sub takes up very little trunk space, and the Morels were installed with 3D-printed adapters so nothing had to be cut.

The difference is pretty dramatic compared to the BavSound system. Much cleaner sound, better imaging and bass, plus CarPlay and a backup camera, while the interior still looks relatively factory.

For anyone considering doing audio in an E46, the DSP and sound treatment are probably the two things I'd emphasize most. Better speakers are great, but getting the install and tuning right seems to be where a lot of the improvement comes from.

Happy to share more details on the setup if anyone is considering something similar. Full disclosure, the system was professionally installed so I can't answer any install questions