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Discussion Starter #1
I have had an MSD box sitting in my garage for acouple months now. Been trying to get the guts up to install it, my car is running great and i don't want to tweak anything. Who has had experience with these boxes and do they make a noticeable difference? I have HEI on the car already.

Also how easy are they to install? i know the instructions make it sound easy but i usually have to throw the instructions away and go with the flow.
thanks
 

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easy

follow the instructions and its easy. I went fom the gm hei to a full msd system and it woke the car up quite a bit down low.
Noticable diff for sure.
 

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Easy to install just follow instructions. What distributor are you going to run with it, use the HEI to trigger it or something else? If the HEI has a good coil and module you may or may not notice any difference. I can go between a fully contained HEI that I set up and an MSD 6AL and MSD distributor and there is no performance difference at the track. If the HEI was just factory stock then you will probably notice a crisper running engine below 3000 prm.
 

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Discussion Starter #5
thanks for all the help guys!

I have the summit HEI distributer on it right now and have had no problems.
should i look at getting a better coil or anything else that will help the box?
 
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