Quote:
Originally Posted by US///M3
Maybe because CA owners are more likely to run tunes, superchargers etc.
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Well first off, we have excluded supercharged failures from our data so there's that.
Second, your point seems unlikely to me. California has the strictest emission laws in the country, which tunes won't pass. Yes there are a lot of tuned cars but CA has 38 million people and 1.5 M annual vehicle sales. There are just a lot of cars here.
And anyway, there is no evidence whatsoever that CA owners are more likely to modify their engines with tunes. It's pure heresay.
Pat