Back in early 2018, we decided to take a strong look at Performance Distributor’s specialty applications. Our coverage included areas where certain automotive applications could be improved, how modern technology could be paired with older architecture, and what new products could reach these markets.
We started by looking at Performance Distributors’ core ignition, the Davis Unified Ignition – or D.U.I. Based on the GM HEI system, “The DUI is a one-piece, one-wire ignition system. The DUI Coil is mounted inside the distributor cap and the Dyna-Module is in the distributor,” Steve Davis told us. Davis is the owner/operator of Performance Distributors.
Compact And Universal
We went on to explain how the compact D.U.I. unit fits just about anywhere a standard distributor fits and has all of its electronics – the distributor, coil, and control module – integrated into a single unit. This makes the D.U.I. ignition a simple plug-and-play unit with modern technology.
Modern technology comes in the form of the Dyna-Module, which is the brain of the D.U.I. ignition. “The Dyna-Module has two to three degrees of additional dwell time-calibrated into it, compared to stock modules, throughout the RPM range,” Davis added. “The extra dwell time allows whatever coil you run to saturate longer, intensifying the spark that winds up at your spark plugs.”
Our coverage went on to explain the modern features of the upgraded distributor cap and D.U.I. coil. Davis explained how these combined to “fire well into high-RPM, while the stock coils are bad about dropping off in the mid-range,” said Davis. The D.U.I. comes with the high-voltage coil built into the distributor cap. This not only makes for a simple one-wire hookup but also a nice compact fitment.
The article finished by looking at some vintage ignition systems and their weak areas that could be helped with a D.U.I. system. The Buick Nailhead’s breaker points style ignition and the Flathead Ford’s common shortcomings were discussed. For good measure, we also covered the Volkswagen Type 1 Air-Cooled ignition system because the engine was so prolific.
Modern technology has improved the performance of engines exponentially over the decades. Not only is it awesome to see a company applying that modern technology to legacy platforms and increasing their performance, reliability, and drivability, but doing so in a visually-unobtrusive and simple-to-install package such as the Performance Distributors Davis Unified Ignition system. The full article can be viewed by clicking here.