So there is a youtube channel where the guy installs invidia q300

ron v

The Forum Idiot
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My reply. Yes.
 

Tony-si

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You do need a tune to get any gains from an exhaust. Without it, the stock ecu tune will keep trying to adjust itself, and you could lose power.
see when this guy on this channel said no im going ok then he does not know much then.. Perhaps in his review he was disappointed in no performance gain...
 
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