Thread: Cold start
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      12-12-2012, 09:10 AM   #5
So Kewl Guy
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Drives: 2010 E93 M3 DCT
Join Date: Sep 2011
Location: Los Angeles

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Originally Posted by e90m3japan
I searched but could not find definite answer.
So I need your help!!! Please.

I was told by a tuner if I remove cold start it will damage my high flow cats!!?
Is this really true?!

Any help will be greatly appreciated!

The only purpose I found for cold start was for emissions and heating up the cats faster so they reach operating temps faster. Catless or even HFC doesn't need it.

You should ask the tuner why they think its terrible because I'm wondering too lol.
2010 E93 M3 / MS Catless X-Pipe / AA Catback / Vorsteiner Vented Hood and Bootlid E93 Trunk / ADV1 7.1 Wheels GB / LS3 LED Lights / Harrop Supercharger