Distributor

I have a DUI paper catalog [ remember those? ]. In it, in more than one place, it talks about the 'explosion' of the A/F mixture. Of course there is no explosion during normal combustion & anybody who is selling ign components & doesn't know this.....should not be in the ign business.
The DUI stuff is overpriced.
The most important part of the electronic inductive ign system is the module & coil; & the HEI module & E core coil produces the highest output for a very modest price & is very simple to hook up. A no brainer. The stock type HEI module which switches, 5.5 amps can be upgraded to a MSD # 83647 module that switches 7.5 amps & has an inbuilt rev limiter. Testing by D. Vizard showed the MSD module ran to 8500 rpm, the limit of the test rig.
The spark testing was done using pressurised nitrogen @ 142 psi, which is a more severe test the conditions in a running engine.