Harley truck tune needed
#6
be careful with those predators with the blown 5.4s they have tendency to add timing over the set curve and blow up. they work good as long as your conservitive with it. i know thats how it is with the fords i dont know how it is with the chevys. good luck with the tune man. i would go with sct.
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Suburban2500
INTERNAL ENGINE MODIFICATIONS
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Jul 19, 2015 04:50 PM





