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Discussion Starter · #1 ·
Hello
I just paid off my 09 sonata limited and since cars are so expensive, I may keep it.
I want to do exterior, interior and engine upgrades, potentially, to keep it fresh.
I wonder if doing head work could improve it's performance and mileage.
Is anyone using a chip or replaced computer?
Bargain performance mod ideas would be welcome including:
exhaust, cats, headers, head work, air flow etc

Thanks
 
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