14 sierra headers and tune

Meadows

New member
Nov 10, 2014
14
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Had Swg install and tune my 14 sierra. Runs very strong. 38 hp increase. 361 rwhp and 400 tq. Check out their fb page for pics. Matt
 
Swg performance temple tx mustang dyno e85

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Kooks 1 7/8 inch tubes
 
I want to look at the gearing of the 6l80 I may do 410s

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Edit again. I may dyno it again a record it tomorrow.

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Also thinking with a shorter tire ~29 it should make a 373 gear a bit more aggressive. Any suggestions?