Quote:
Originally Posted by Sonny01
I put a K&N intake on my '09 Silverado 5.3 Flex engine and was wondering about the benefit...if any...of installing a set of short tube headers that mate up with the existing exhaust system. I did a search and didn't come up with anything. Is it worth it and who makes the best set? About the only other thing I might do is get a Superchips Cortex programmer.
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What are you wanting?
Gas mileage or power?
Hard to get both at same time.
K&N filters do not help much.
Headers do not help much unless you have all of the other racing goodies to go with them.
Sometimes chips or programers can help but are a illegal operation for driving on a federal funded highway.