PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

BS3...crank reference input

Old Jun 7, 2007 | 05:41 PM
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Default BS3...crank reference input

I'm trying to do this and I think they have me probing the wrong wires. The ECM pinout doesn't match the ECM. I was just wondering if anyone else had any insight into this...tips. I called BS, but their is no answer and the mailbox is full.


thanks
scott
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Old Jun 7, 2007 | 05:44 PM
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It doesnt work the way they describe it, I did mine with a timing light and an indexed balancer. I tried every way to do it like in the instructions but I could never get it to work. I ended up with 348.5 on the reference FWIW.
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Old Jun 7, 2007 | 06:39 PM
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That's good and bad..lol. I was thinking I was a real jackass.

Did you just play with numbers in the crank reference until your timing lined up with your pointer? I have an ATI, so it has degrees.
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Old Jun 7, 2007 | 07:00 PM
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Pretty much thats about it, I think most guys end up in the 346-350 degree range from what I gather. I made a pointer out of sheet aluminum, use the front two pan bolts to hold it on and time it from the bottom. I had the heads off when I did the BS3 so finding exact TDC wasnt a problem.
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Old Jun 7, 2007 | 07:19 PM
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Cool, thanks alot. I have been killing my self for the last 2 evenings trying to probe these wires..lol
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