LOOK MA! NO DIZZY!

[GTRS Fiero]

So, with DIS, you still have an ICM.

[Fierofool]

Yes.  It tells the correct coil set when to fire.  Trivia Item:  Coilpacks fire two cylinders at one time.  One of them is at BDC and the other is at TDC. 

[Raydar]

I thought that one plug was at the top of the compression stroke (TDC) and the other was at the top of the exhaust stroke (TDC).

[Fierofool]

OOPS!  You're right.  I've always thought that method reduced the energy that was going to the one plug that really needed it but I guess they just upped it a little to compensate.  . 

[TopNotch]

In a waste spark ignition system, the two spark plugs on the same coil are actually in series. That means that one must fire in order for the other one to fire. The spark plug in the cylinder that's on the exhaust stroke faces much less dielectric resistance, and fires once the voltage reaches only about 2 or 3 kV. So if the system generates 40kV of spark, that leaves 37 or 38kV to fire the plug in the cylinder that's on the compression stroke. So very little electricity is wasted.
Having only 1/2 as many spark coils as cylinders reduces bulk and weight, so it's a good system.

[GTRS Fiero]

So, if there exists unburnt fuel in the combustion chamber, it may ignite going out the exhaust?

[GTRS Fiero]

Well, f85gtron, who will have their EGR completed in their RUNNING Fiero first?  Mine doesn't have the cradle in, yet.

[f85gtron]

I'll go ahead and concede now. I might go turbo first...

[GTRS Fiero]

[f85gtron]

If it's a competition, I'm open to it as long as it's friendly and there are clear ground rules that we both agree on.
1) starting now,
2) must be 7730 controlled, three solenoid type egr,
3) must be complete in installation and working before considered complete to win.
   A) proof will be in the form of a data log or pulling the wiring and throwing a code as evidenced by video.
4) programming the 7730 can be done by whatever source you choose (mail order tune or tuned personally). 

Agreed?
Any body else like to join in?
Pgackerman?

[GTRS Fiero]

A friendly competition.  Just meant to encourage progress.

I'm good with all, except A.  I have no way to pull a data log.  I figured you'd post a pic, the same as I would.  I don't post on youtube.  I don't know how I'll even know, my own self, since mine is being done.  I can pass along the info I get.

Mine is a 7730 ECU, with the 3-solenoid type EGR.

It's just a bragging rights competition.  The more, the merrier.  Actually, I was hoping you'd finish first, so I could see how it went, aesthetically.  Not that I want work on mine to slow down.

[f85gtron]

Ok. So strike out A and go with gentleman's assumption works for me.
ready......set.......GO!

Pgackerman, you'd better shake a leg!  We've got the jump on you!

[GTRS Fiero]

You've got a jump.  You're starting with a running car!  LOL!  I challenged.

C'mon, PG!

[GTRS Fiero]

Pgackerman?

Any progress, Ron?

[f85gtron]

None on my end. Tdy in Memphis AGAIN . No time as of yet and I'm getting discouraged.