If they arent maxed out its not going to help anything. And if you do uncap them and not get them flow tested it could lead to other issues.
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Yes this is true. It all depends on the power he goes for after getting it tuned. With the stock injectors he'll be good until I think 400whp, correct me if I'm wrong. He can get up to 350whp on just the cam and springs alone. That's been proven.
Depending on how much growth you are planning to do with the truck would determine if you will need to do the injectors. Like RDF1 said don't mess with them if you don't plan on having more than 400 to the ground. If you get the bug to go faster research injectors and other power adders.
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