jackrabb1t Posted June 26, 2017 Report Share Posted June 26, 2017 I am running a MSD Digital 6A ignition control on my 1987 Mazda RX-7. It is connected to the stock leading coil and boosts the power through the stock coil to the two leading spark plugs. The trailing coil is completely stock. Should this part be considered a ‘Distributor, non-OE, or aftermarket ignition system’ or ‘Ignition coil(s), aftermarket’ for purposes of value-add disclosure on the tech sheet? Quote Link to comment Share on other sites More sharing options...
mender Posted June 26, 2017 Report Share Posted June 26, 2017 Non-OE ignition system. You answered your own question; it doesn't replace a coil. Quote Link to comment Share on other sites More sharing options...
jackrabb1t Posted June 26, 2017 Author Report Share Posted June 26, 2017 8 minutes ago, mender said: Non-OE ignition system. You answered your own question; it doesn't replace a coil. I was leaning towards classifying it as a non-OE ignition system since it doesn't replace the stock coil. At the same time, it's not really a non-OE ignition system either in the sense that it doesn't holistically replace stock ignition components. Quote Link to comment Share on other sites More sharing options...
mender Posted June 26, 2017 Report Share Posted June 26, 2017 Best is to email Phil, he has the last word. Quote Link to comment Share on other sites More sharing options...
Ron_e Posted June 26, 2017 Report Share Posted June 26, 2017 In whole or in part it replaces the ignition system. Kind of like if I ran headers on 7 cylinders but somehow used the stock manifold on the 8th cylinder - can I get a reduction on the 25 points? Anyway, Phil has your answer. Quote Link to comment Share on other sites More sharing options...
Ogren-Engineering Posted June 26, 2017 Report Share Posted June 26, 2017 it's either stock or not . No need to bother Phil. 2 Quote Link to comment Share on other sites More sharing options...
jackrabb1t Posted June 26, 2017 Author Report Share Posted June 26, 2017 9 minutes ago, mender said: Best is to email Phil, he has the last word. 5 minutes ago, Ron_e said: In whole or in part it replaces the ignition system. Kind of like if I ran headers on 7 cylinders but somehow used the stock manifold on the 8th cylinder - can I get a reduction on the 25 points? Anyway, Phil has your answer. Phil has been emailed. Quote Link to comment Share on other sites More sharing options...
Eman911 Posted June 26, 2017 Report Share Posted June 26, 2017 I'm running Megasquirt with ignition control and was advised although it uses the stock dizzy and module that it is considered a non-OE ignition system. Quote Link to comment Share on other sites More sharing options...
Ogren-Engineering Posted June 27, 2017 Report Share Posted June 27, 2017 (edited) The rule says that ECU is free . IMHO if you use the stock coil and dizzy and driving the fuel , you are under the open ECU part of the rule . If the ECU strictly runs the stock coil dwell, than the rule goes to non stock ignition. IMHO ; The rule regarding non stock ignition is not in concert with the open ECU rule and should be changed . But at this point, for zero points the ECU must also run the Fuel management. Edited June 27, 2017 by flyinglizard Quote Link to comment Share on other sites More sharing options...
mender Posted June 27, 2017 Report Share Posted June 27, 2017 (edited) The open ECU rule was to allow EFI users the same tuning that non-EFI users had. In other words, a different ECU, chip, and/or reprogramming are to tune an existing system and are now free. Adding an MSD isn't tuning and isn't free. Edited June 27, 2017 by mender 1 Quote Link to comment Share on other sites More sharing options...
Ogren-Engineering Posted June 27, 2017 Report Share Posted June 27, 2017 MSD tunes the dwell time just like the Megasquirt can. If the MS is free the MSD should also be free. Quote Link to comment Share on other sites More sharing options...
jackrabb1t Posted June 27, 2017 Author Report Share Posted June 27, 2017 Phil has decreed. It falls under the 'Non-OE Ignition System' category, so 20 points. Quote Link to comment Share on other sites More sharing options...
Ogren-Engineering Posted June 27, 2017 Report Share Posted June 27, 2017 (edited) Put in a letter. If one is free both should be. Actually the MS can do tons more than the MSD. All the MSD will do is shut off the car while leading. The ECU is out of the barn . Many teams have fit them into their points and the ECU is totally un-policable . Edited June 27, 2017 by flyinglizard 1 Quote Link to comment Share on other sites More sharing options...
mender Posted June 27, 2017 Report Share Posted June 27, 2017 Or he might take the position that if one takes points, so should the other. Good intentions and all that. 1 Quote Link to comment Share on other sites More sharing options...
mender Posted June 27, 2017 Report Share Posted June 27, 2017 1 hour ago, flyinglizard said: MSD tunes the dwell time just like the Megasquirt can. If the MS is free the MSD should also be free. MSD is a major change in ignition system operation, from inductive discharge to capacitive discharge as a way of getting around the typical stock ignition system dwell/coil saturation limitations. Coil-on-plug in modern ignition systems, another major change in ignition system operation, has made CDI superfluous. 2 Quote Link to comment Share on other sites More sharing options...
mhr650 Posted June 27, 2017 Report Share Posted June 27, 2017 55 minutes ago, mender said: Coil-on-plug in modern ignition systems, another major change in ignition system operation, has made CDI superfluous. Definitely, I love the LS coils on my rotary… Quote Link to comment Share on other sites More sharing options...
Eman911 Posted July 4, 2017 Report Share Posted July 4, 2017 And I love the word "superfluous"! Quote Link to comment Share on other sites More sharing options...
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