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Old 09-19-2009, 08:06 PM   #1
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Dual stage switchover

Using the SCT datalogging software, what parameters would one use to determine exactly when the intake manifold switches from the long to short runners relating to RPM?


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Old 09-19-2009, 08:29 PM   #2
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i have no idea!

but i have a question!

Why would you want to do this? It's probably already changing over at the optimal point.

Take the SVT intake manifold for instance. There was a dyno a while back that showed one run with the manifold stuck on short runners, and another run stuck on long runners. The two runs were laid over each other and where they cross is the exact point the manifold switches over.

edit: also, did anyone actually confirm that we have this technology in our D23 intake manifolds?
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Old 09-20-2009, 09:14 PM   #3
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Its there. If you ever see a 2.0 manifold and a 2.3 side by side you will know.

But I was just curious to see for myself. No one knows?
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Old 09-20-2009, 10:08 PM   #4
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what is your 5-digit processor code (vehicle info, read strategy on the x2/x3) i can try to find it for you
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Old 09-20-2009, 10:31 PM   #5
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Its not the cars processor code right? That one is UAD3 (i think). If the info is on the Xcal itself, I will have to get that to you tomorrow as it is not at my house.
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Old 09-20-2009, 10:40 PM   #6
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theres probly a way to translate it but i havent figured it out. if you go to vehicle info then choose read strategy it will give you a 7-digit number/letters. I would need the first 5.

for instance, NFC1 is SBAF6ZD, I would need SBAF6
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