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Puny Bird
Join Date: Nov 2002
Location: Port Hope (near Toronto) On, Canada
Posts: 4,566
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I have no idea how to make the stock CDI work.
There are two warring camps on the MSD Twin plug debate, some say 2 boxes, some say one is fine.
Pros and cons
Single MSD box
Pro if the box fails not a big deal, other than the tow home.
Con, you may lose a hair of HP if you use only one box, but this point is debatable.
Twin boxes
Pro Many say more HP
Con if one box was to fail you would be running the engine on single plug, on a high CR motor that could result in engine damage.
My thought is for a race car 2 boxes, but for a street car, where losing a couple of HP isn't a big issue, a single box is just fine.
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'74 Porsche 914, 3.0/6
'72 Porsche 914, 1.7, wife's summer DD
'67 Bug, 2600cc T4,'67 Bus, 2.0 T1
Not putting miles on your car is like not having sex with your girlfriend, so she'll be more desirable to her next boyfriend.
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