Originally posted by REGS12
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However having said that about the ONLY reason to install a tuning box is because you want to maintain your warranty. With a 4 year old car that really isn't an issue so I would go and get a proper ECU tune.
Gains from a decent tuning box is generally only about 50% what you get from a good ECU tune. So bang for buck you're better off going for the full tune.
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