4 inch st borla
03-17-2010, 12:38 AM
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4 inch st borla Borla makes a muffler with a 4 inch inlet and outlet. Thinking of going to a straight 4inch exhaust with borla's race muffler i believe is called the xr1 race muffler. As for the rest of my setup includes a tsp 228r cam, patriot 2.5 stage 59cc ls6 heads, weiand ls6 intake milled to 90mm along with a 90mmfast tb and LT with a y pipe. wondering what kind of gains i will see and how hard this setup will be to fab/install
03-17-2010, 06:39 PM
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If you're going to dump it before the axle it would be rather easy to install. I have a 4" xr1 dumped at the axle. All you would need is a 4" adapter coming from your y-pipe and bolt up a hanger for the muffler. the setup sounds good and gets the job done.
