How to Install a DIS4?

[Identity Crisis]

I have a DIS4 that I want to install but I dont have any of the instructions as this was a used item.

Anyone done this before? Can you help me out?

I have heard enough from people about it being a waste of time, but I have my reasons. #1 N20 #2 Garrett T4(maybe)

Thanks

[bszopi]

http://www.msdignition.com/pdf/frm25956_for_62112_62152/frm25956.pdf

The internet is your friend...

[Coyote_Rage]

just out of curiosity it would be a waste of time why?

[OldSkoolGP]

Because unless you're running boost and very high octane fuel, it's just not necessary. The stock GM DIS system produces 20,000 volts, way more than any other manufacturer's system. You don't gain anything on an N/A by having a 40,000 volt spark. The reason to use the MSD box is when you have a situation with boost where the spark could possibly be blown out.

[Identity Crisis]

Downloaded the installation wiring diagram today.

Hopefully by the end of the weekend I will have the DIS and the APEXI NEO installed. Middle of July I will install the N20 and APEXI Grounding system. Then I am done for this year.

Next year, Headers/exhaust

[ForcedFirebird]

you have a situation with boost where the spark could possibly be blown out

Care to enlighten an ignorant one? I have heard many arguments that you can't "blow out" a 20,000 volt spark gapped at .035?

[Dave96z34]

I had fun with my msd....

[PCGUY112887]

Care to enlighten an ignorant one? I have heard many arguments that you can't "blow out" a 20,000 volt spark gapped at .035?

I'm sure with enough boost you could

[OldSkoolGP]

Well it would eb tough to blow out a .035 gapped plug. But most GM plugs are gapped stock at .045, and they should be. A larger spark that has to travel a longer distance has better potential to ignite the air fuel mix and more thoroughly combust it. In fact, the new Delco Iridium plugs are usually gapped at .060, but they have a very low resistance and can produce as hot a spark with the same voltage. I really can't think of a situation where you'd want to run as small a gap on your plugs as possible.