GeneralDisorder

Rick,

I have replaced the front exhaust/catalytic converter with a magnaflow direct fit. As you suspected, my old one was pretty well burned out, with chunks of the honeycomb falling out when I removed it. Now it's rather LOUD and backfires quite a bit, but it seems to run better on the road. I plan on mixing in some denatured alcohol, as you've suggested, before I have it emmissions tested again. It still has some E85 gas mixed with regular unleaded in it, about 3-4 gal each. Is there anything else I can adjust to lean it out, and how far should I retard the timing when I do have it tested? Also, I've seen contradicting info online about the idle mixture screw. Is it clockwise leans out the mix, or the reverse? Thanks again for your help.

Brad