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      09-28-2011, 05:08 PM   #19
JCtx
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Drives: No BMW yet
Join Date: May 2008
Location: El Paso TX

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Quote:
Originally Posted by Ateam View Post
I was wondering how the dealers recieve cars that go in with no cats? I would think the smell would immediatly give it away and while I know cat delete alone cannot void warranty.
First thing to remember is it's a federal offense to remove cats, so they'd be fully justified to cancel warranty on that alone. But the kicker is no cats require tuning to remove the CEL, so no CEL means you're tuned. And a tune can void your entire powertrain warranty. And no, there's no reversing a tune; it can always be detected that DME was tampered with.

That's why unless you count a BMW service manager as your drinking buddy, I'd seriously question doing any of that crap to a car under warranty. And if you already did, taking it there with those mods wouldn't even cross my mind. But to each his own. Good luck.
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