Brian, If you are going to use 100LL especially, running both plugs will not only give you a more complete burn, but will prevent lead fouling of the second plugs. No matter how carefully you lean, you will still get carbon deposits, and lead fouling on the second set if you don't keep them burned off. You really are not saving anything, and you cause a delay in the safety purpose of the second ignition system, since you would nearly cutoff before switching the "backup" on. 2 plugs will actually produce slightly more horsepower than one set. Look at the Nissan 8plug 4 cylinder, and the Ford Ranger 2.3L 8plug 4cylinder, just to name a couple. They found it to be beneficial.
Colin & Bev Rainey KR2(td) crain...@cfl.rr.com http://kr-builder.org/Colin/index.html Sanford, Florida KR Gathering 2004-see ya in Mt Vernon
