0411 (P01) on a 4 cylinder?

[antus]

This thread is about 6+1 triggers viewtopic.php?t=128
Note that it is for an earlier generation of PCM so the module part numbers do not apply to P08, just the trigger wheel.

There is also a cad file you can modify to suit and get cut here viewtopic.php?p=123446#p123446

[Thorwon]

This thread is about 6+1 triggers viewtopic.php?t=128
Note that it is for an earlier generation of PCM so the module part numbers do not apply to P08, just the trigger wheel.

There is also a cad file you can modify to suit and get cut here viewtopic.php?p=123446#p123446

So according to the cad drawing the slots are 5 deg wide and 60 deg slot to slot. The +1 is 5 deg from one of them.

Is this correct? And it will work with the P08?

[antus]

I don't think it looks like 5 degrees, more like 10. I made mine to 10 and it is working well. I don't see it specified in the picture.
That is the GM 6+1. I have not tried it on the P08 (have only bench programmed the P08) but I would expect it to work.

viewtopic.php?p=125334#p125334 on a different generation of ECM with different ignition module. It is a cavalier system, but earlier D1927a module, about 1987-1991.

[Thorwon]

I don't think it looks like 5 degrees, more like 10. I made mine to 10 and it is working well. I don't see it specified in the picture.
That is the GM 6+1. I have not tried it on the P08 (have only bench programmed the P08) but I would expect it to work.

viewtopic.php?p=125334#p125334 on a different generation of ECM with different ignition module. It is a cavalier system, but earlier D1927a module, about 1987-1991.

So what ECM were you actually using? Delco?
Anyway this is how it measures in Qcad.

7x reluctor010.jpg

[antus]

haha well I can't argue with that. Yes its a delco 808, from about 1989 in the VL Walkinshaw V8 manual, though the VN/VP/VR modles to about 1997 in the VS V8 Commodore. But all the delco of the era used the same 4 wire ignition interface to the module and the logic was in the module. So this trigger system was only used in Australia on a Jackaroo v6, and so we need to import the D1927a cavalier module from the states, but it does interface with our ECM to provide coilpacks. After that the system changed a little and the ignition module went from 3 plugs to 2 plugs and is not compatible with my ecm thats the 19178835. I thnk you are looking at the generation after that. I believe the trigger stayed the same, though as I've not heard of or seen a different GM 6+1. For interest this site started to support the '808 computer and we developed the 12p software and some hardware for realtime. You can see that here. It's a really well known system, and it does run on the US '165 ECM too and is often used to convert that ECM from MAF to MAP in the states. viewtopic.php?p=3801

[Lowlyfe1]

I'm not really picky which ECM I use, I'm putting it on a 1987 Jeep 2.5L. I have a port injection intake, with 28 lb. injectors.
Would you know what they used in the S10 with the 2.2L? I want to build a system for my 2.5L that runs dependably.
I tried running it on a P01 with a modified V8 tune. But I just couldn't get it to run right.
So I pulled that system off and put a weber and HEI on it. It runs ok but not as good as I think it can.
So I decided to try and wire up a complete FI harness. I've just got to decide which ECM I'm going with.

Could you elaborate on what kind of problems you were having using a P01 ECU? I was planning on doing this on one of my project cars

[Thorwon]

Could you elaborate on what kind of problems you were having using a P01 ECU? I was planning on doing this on one of my project cars

I think the biggest issues I had was two fold.

1. I know just enough to be dangerous when it comes to tuning. (But in my defense, I haven't blown up any engines, yet.)

2. I was running the 2.5L 4 cylinder on a tune for a 5.7L V8. I had the DTCs for half the injectors/ignition turned off.
The computer was seeing less than half the air flow of what it is looking for through the MAF.
I tried lots of things, like changing cyl volume, engine size, among other settings. I just couldn't get it to run right.

I have a pre Vortec 5.7L I plan to use that P01 on. It's going into a 1986 Jeep Comanche.

That's why I'm looking to try a P08 with a 4 cylinder tune. It'll be a much closer starting point.

[AngelMarc]

Did GM ever put the P01 in a 4 cylinder...?

No, but you can do it anyway.
viewtopic.php?p=121461#p121461