If you had a high speed miss before you installed the Petronix - you had something wrong with your original system. I.e., you are comparing "apples to oranges." And a 4 MPG gain? Again, your breaker system obviously was not working as designed.
Standard Petronix Ignitor kit offers no difference in potential firing voltage. Ignitor II and Ignitor III does raise "potential" voltage if you opt for a different coil.
I've got over 50 old farm tractors and crawlers. For the ones with gas engines? None miss-fire at high RPMs when tuned correctly.
Also have a 1970 Chevy Nova with a 307 V8. Ran fine with breaker points but needed a tune up once in awhile. Stuck in a later OEM GM breakerless high-energy ignition. Runs just the same and MPGs didn't improve AT ALL. But, no more tune ups and if a part fails - I can easily get at an auto-parts store since it's OEM GM parts and not after-market.
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Today's Featured Article - Sunday Drives - by Cowboy. Summer was finally upon us here in Northern Maine. We have two types of industry up here, one being "Forestry" (Wood Products) and the other "Farming" (Potatoes). There is no shortage of farm tractors and equipment around here! I have been restoring old Farm Tractors for the past 6 years, and have found it easier and less expensive to hit all the auctions and purchase whole tractors for parts needed. My wife who works at a local school, and only has weekends and summers off, while on t
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