05-19-2012, 11:21 AM
Ok so I'm running an ls6 with a tourquer v2 cam, stage II cnc'ed heads and a ls1 intake. The car sat for about a month and that month I started her up 4x's. When I finally got her on the ground everything seemed fine. They I started noticing a lot of loss of power, sputterring and backfire when accelerating. I ran a couple of fuel system cleaners and changed the spark plugs but the problem is still their. Then I started noticing she pulls fine in the morning(when cold) but the issues come back after. I'm running this set up in my Nissan 240sx s13 1991. Any help would much greatly be appreciated.