I was going to install a Roush I/C supercharger kit on my truck but now that I have seen an Edge programmer add over 50rwhp I have decided that I might save myself some money and gas mileage. Anyways....

I wanted to ask you guys how does a 5.4L 3v do with a full exhaust w/ longtube headers?

What are the rwhp gains?
MPG increase?
Too Loud?
Best company to buy from?
Best price?

-Thanks

 

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I have used the search feature, go beat your meat