Anybody familiar with the Sean Murphy Computer Controlled Quadrajet stage 2?
My new crate motor has what a couple of mechanics called a lean miss. The last one adjusted the carb and its running better than it ever has, however it still has a miss. Last week he told me to plug the EGR and run it a couple of days. He said the EGR might be leaning it out. I plugged it and it runs smoother, but still has a miss. I was thinking a performance version of the stock CC 750 Quadrajet might smooth it out.why stage 2 for you if yours is cc??
That's good to know, thanks. Do you mind if I ask what other changes you made to the Computer Control systems or emissions to get it to run right?I have a SMI stage 2 CC Q-Jet on my '87 El camino with a GMPP 350HO. Before, I had a stock unit wit richer secondary metering rods, but it was still a little flat coming on the secondaries. This new one works very well, no issues. They set up the stage 2 for your particular engine combination so it should work right out of the box.