How do I get more off the line torque on my 4.8 silverado?
I have a 2005 silverado 4wd regular cab.Just the other day I outran a lightning,I was very suprised that I won.The truck is only a 4.8 and I know the lightning has more than I do.He had me of the line but when my rpm's hit 4000,in mid range I started to pull away from him.The only thing that I have in my truck is a real good flowing performance muffler,and k&n air filter.I was just wondering how do I get more acceration off the line without getting a supercharger or turbo?There just so damn expensive.Iwas thinking of going with a custom tune I'm wondering if that would make a huge difference?Should I get headers and high flow cats before the tune?What are your recommendations?

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