Transient Plasma Systems is working on a new advanced ignition system that could replace traditional spark plugs in gasoline engines. This could reduce emissions and improve the efficiency of internal ...

Swapping in a new HEI, or even just pulling one out to service, is quite simple. All it requires is basic handtools and some background info on how the distributor works in conjunction with the engine ...

Around 1975, General Motors made a significant advancement in stock passenger ignition technology: the High Energy Ignition (HEI). One of its major features was installation simplicity. The coil was ...

In 2019, we took a look at an interesting new advanced ignition system from Transient Plasma Systems. It replaces the conventional spark plugs in a vehicle's engine with an ignition module that uses ...

It wasn't all that long ago that GM engineers designed the original HEI system to replace the decades old points-type ignitions. In the mid-'70s, leaner mixtures demanded greater voltage and more ...