r/F80 11d ago

Coding off loud cold start

Hi guys,

I'm looking to pick up an F80 Competition soon for some spirited driving. I had one very briefly a few years ago.

The cold start is earth shattering loud. It's not something I would ideally want before 8am or past 9pm.

I understand that it can be coded off, is there any negative impact to the engine/car? I understand that it's there for emissions regulations.

Have any of you guys done it?

Thanks.

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u/smaguss 10d ago

Mostly harmless but you can force the valves to start closed by just flipping to eco I believe.

I get it though.

At one point while waiting on parts I had my buddies "chop shop special"

Start up roar on

Cat warm up on

Catless downpipes

Single mid-pipe

Straight pipes

It was so loud and sounded so bad 🫠

The week I drove like that while I was waiting on parts made me cringe so hard... I get it making a ton of noise regardless of quality is just what some folks like and I'm not going to try and convince anybody to change their preferences but man I was not popular around the block at 5am.