do they make a performance chip that has proven to increase power?
Some! But Cheap Ebay Performance Chips does not increase power!
How much more power do you really need or want? Sometimes it can be too much for the car. Let's say for example that you were able to get 500 horsepower? Don't you think it would be excessive? Listen, I've known some people who have done that, and their cars cease to drive as daily vehicles if you know what I mean. Don't go overboard.
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