1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Msd Box Or Direct Fire?

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Old Nov 2, 2008 | 04:25 PM
  #1  
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Msd Box Or Direct Fire?

Which Do U Prefer Msd Or Direct Fire?
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Old Nov 2, 2008 | 04:56 PM
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How rich are you?

Direct fire is much cheaper and works.
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Old Nov 2, 2008 | 07:03 PM
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But MSD is s much stronger spark. I have MSD direct fire, best of both worlds.
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Old Nov 2, 2008 | 07:30 PM
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there are better things to spend your money on than an MSD Box.

$ 4 $ a 3rd coil an a couple of GM HEI can't be beat
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Old Nov 2, 2008 | 08:32 PM
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DLIDFIS FTW.

(Alphabet soup is fun.)
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Old Nov 3, 2008 | 05:15 PM
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I have the MSD system. It works fine but I noticed no difference when I went from the distributor to the MSD direct fire system. If you're car is running well, don't bother.
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Old Nov 3, 2008 | 08:33 PM
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both...
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Old Nov 11, 2008 | 01:25 PM
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Thumbs up

thanks i'll save my money and pick up a coil at the junkyard
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Old Nov 11, 2008 | 06:54 PM
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can anyone post up a wiring diagram to set up a direct fire?
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Old Nov 12, 2008 | 01:35 PM
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Originally Posted by mazda83
can anyone post up a wiring diagram to set up a direct fire?
There are several posts showing how to DIY on this board.
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Old Nov 12, 2008 | 02:11 PM
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https://www.rx7club.com/showthread.p...hlight=DLIDFIS

https://www.rx7club.com/showthread.p...hlight=DLIDFIS

http://www.geocities.com/cd23c/dlidfis.html

Search for DLIDFIS in the First Gen Archive.. Lots of info there.
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Old Nov 12, 2008 | 07:25 PM
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If you're looking for an improvement, use new parts rather than junk yard parts. I did DLIDFIS with two Blaster coils and GM HEI igniters and saw a marked improvement. Now revs without missing to 7K+. I left the trailing ignition alone and everything in place to go back to stock if desired, or to run both leading plugs off one igniter if needed. Total investment was about $100.

- David
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Old Nov 13, 2008 | 03:22 AM
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msd's
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