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piecesparts · 10-29-2011, 10:28 PM

I just put a set of Kooks Long tube headers with their catted 'Y' tube on the GMC SWB. There is a serious difference in performance and sound. I think that this was definitely a good install. The factory system is so inefficient in comparison.

10-29-2011, 10:28 PM	#1
piecesparts Parts and more parts Join Date: Nov 2003 Location: Lebo, Kansas (middle of nowhere Posts: 6,821	Headers on the 2011 GMC I just put a set of Kooks Long tube headers with their catted 'Y' tube on the GMC SWB. There is a serious difference in performance and sound. I think that this was definitely a good install. The factory system is so inefficient in comparison. __________________ Frank