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Registered
Join Date: Jan 2007
Location: SC
Posts: 1,640
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XDI2 + 3.6 + PMO Carbs
I am trying to figure out a good set up for the ignition advance for my new engine.
A 3.6 twin plug with PMO carbs and XDI2 ignition. Any of you with a similar set up? I will run the engine on a dyno next Friday but would like to have a fairly good map for the start of the tuning process. So far I think I would go with 10 for 1000, up to 30 for 3000 and back to 28 by 4000 and up. What do you guys think? |
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08-19-2012, 09:05 AM
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Chain fence eating turbo
Join Date: Dec 2008
Location: Austin, TX
Posts: 9,125
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What's your compression ratio and cams/cam timing?
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08-19-2012, 11:45 AM
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Registered
Join Date: Jan 2007
Location: SC
Posts: 1,640
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for now stock 964 cams and compretion ratio.
964 Cams are 470"/430" as far as I know and compression 11.3:1. Will change the cams to 490"/470" one day when I have to open the engine and maybe go with a different aftermarket piston profile.. |
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08-19-2012, 12:01 PM
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Registered
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
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What octane fuel will you be using?
Did you incorporate knock sensing into your XD12 installation?
__________________
Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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08-19-2012, 01:08 PM
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Registered
Join Date: Jan 2007
Location: SC
Posts: 1,640
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yes Steve, the knock sensor is connected to XDI2 but not activated in the wintec software.
I use only 95 and up. actually only 98 Octane. |
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08-19-2012, 01:11 PM
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Chain fence eating turbo
Join Date: Dec 2008
Location: Austin, TX
Posts: 9,125
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Well, I guess since you are going to tune on a dyno, maybe back out the timing a little over you initial numbers to play it safe.
You're going to get optimal numbers anyways once tuning so if it's too retatrded, at least it's safe. |
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08-20-2012, 06:20 AM
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