What did you do for your M3 today?

[discoelk]

Got tired of waiting for someone to make a catted equal length section 1 so I built my own.

https://youtu.be/xfDVvbM_INo?si=ItVKdlgCyt8ya9y6

Some background. My car has had garbage manzo mid pipes since day 1. It was supposed to be a temporary solution for a broken flange section 1 when I bought the car 3-4 years ago but life happens. I welded in some cheapo 200cell cats when I did headers. They smelled like the wash coat was gone in the first 2000 miles also, so not great. That being said, I'm not the best person to judge stock "noise". The car was quiet and stock at low speed and load. It sounded really bad(IMO) under hard load. Resonance at 3000rpm also. Typical buzzy raspy S54.

This just sounds like stock but good to me. Less rasp, more refined, tone/volume is pretty close. Other mods are Karb race box and megan headers. The airbox dominates sound from the divers seat but reflection off buildings, curbs, and underpasses sounds great.

The butt dyno says it makes a little more top end power but butt dynos are pretty unreliable. I used 2.25in piping and 400 cell cats. The manzo stuff was 2.5in.

[EthanolTurbo]

Put a deposit down on some unicorn shit... stay tuned 😉

Any guesses?

[Grey Phox]

Put a deposit down on some unicorn shit... stay tuned 😉

Any guesses?

M Rain Interior lol. We probably have different ideas of what unicorn shit is.

[Cubieman]

Some boring stuff in comparison. I replaced the fan clutch to a E36 M3 for hopefully better cooling after reading through another thread.

Also replaced the OAS and the oil vent line from airbox>pan. Both were likely just fine but I guess I wanted something to do and didnt feel like installing my new yellowtag rack just yet.

Found a leak from the return hose>P.S reservoir, all this shit is basically brand new so that's unfortunate.

Maybe a basic hose clamp as opposed to the stock style clamp will fix this as its not leaking out the vent hole, its definitely from the hose connection.

[karter16]

Put a deposit down on some unicorn shit... stay tuned 😉

Any guesses?

Definitely brand-new-in-box purple-stripe floor mats 😉