Need help wiring ignition timing on the PP6

[macipusy]

So I have had a problem tuning the ignition timing on my PP6...if you basically change any values in the ignition map it will misfire all over the place.

I want to double check that the wiring is correct. I need to know the color of the ignition timing wire from the PP6 and where it needs to be spliced into the ECU wiring.

I have a 91 SS.

[Legacy777]

How does your wiring compare to this?

http://main.experiencetherave.com/subar ... cyrev2.doc

[macipusy]

Thanks for the file.....I will check that against my wiring in the next couple of days and report back with the findings.

opefully I can get this resolved before my dyno tune on the 7th.

[macipusy]

I forgot to mention that I am running thr PP6 with a MAP sensor. Would this affect any of the wiring in the writeup?

[Legacy777]

What do you mean? Your trying to use the PP as a MAP based system?

If so, I don't really see how you will be able to do this. The sensor response curvers are completely different between a MAF sensor and a MAP sensor. MAF sensors have parametric response curves, while MAP sensors have linear response curves.

[macipusy]

I have a PP MAP sensor hooked up (little blue box about 1/4 size of the PP6) that has a vaccum line hooked to the manifold and a couple of wires spliced in. I am not sure how this works with the MAF but its been working good for the past year, as far as fuel map goes.

I am going to try to create a diagram of how the MAP and PP6 are spliced together and to the ECU. Maybe then you can help me figure out what is really happening, since I am a noob when it comes to electronics.

[macipusy]

OK....went crawled under the dash and noted all the wiring for the PP6 and the MAP.

The MAP has 3 wires (B/R, Y, B) and a vaccum line that is tapped in to the intake manifold.

The B/R from MAP is spliced with the R pin#13 from PP6 and T'd into B48.2

The B form MAP is spliced with the B pin #1 from PP6 andT'd into F47.15....not the F47.14 like in the writeup....but I think that is ok, both are grounds

The Y from MAP is a straight connection to the Br pin#7 from PP6....this I don't understand.

NOw the ignition stuff....looks like all the wires you listed for ignition to cyl 1/2 are switched to cyl 3/4 and vice versa. I am guessing that this is causing the car to misfire when any values are inserted into the ignition map. Does this make sense?

Also the B/W pin#10 on PP6 is spliced into the harness side of B48.9 along with the L pin#6 from PP6

B/Br pin#22 and G/Y pin#11 are not hooled up at all.


Let me know what you think. Mainly I just want the ignition stuff to work when I go get tuned.

Thanks

[Legacy777]

I'll have to take a closer look when I get some time at the PP wiring.

As for the ignition stuff, yeah I would tend to agree with you about your comments. If they are wired backwards, that could mess things up.

[macipusy]

Swapped the ignition wires that were in question yesterday and I am getting tuned today in a couple of hours. I will post and let you know if the ignition adjustments work....crossing my fingers, thanks for the help.

[macipusy]

The ignition adjustment seems to be fixed even though we didn't really use it in the tune. It definitely was not misfiring all over the place like before.

I did fry the ignitor by leaving the key in the on position with the engine off. Lesson learned.

[Legacy777]

I don't understand why the perfect powers do this, but yeah Doug has experienced this issue as well.

[macipusy]

Here is the pic of inside the fried ignitor.....looks like the center connection burned out.



I would be interested knowing what that center pin actually is.