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Old 02-17-2006, 09:02 PM
zavikan zavikan is offline
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Stage 1v2 VS Stage 1v4

What are the differences anyways?
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Old 02-18-2006, 10:33 AM
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V2 had only changes to the fuel curve.

"In the Stage One code we retained the shape of the Subaru fuel map while moving the entire fuel curve down to a focus around 12.9 to 1." www.ecutune.com

But V4 had changes to the fuel and timing curves.

"Starting in Stage I v4 performance was further increased by adding ignition advance to a table used in conjunction with the dual knock sensors to actively seek the borderline of knock."
www.ecutune.com

I had V2 and then went to V4. I felt a diffence, but it was not as much as going from OEM to V2. I would say that V4 on the first day felt like V2 with a week of learn time.
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Old 02-18-2006, 03:26 PM
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Whats the difference from v3 to v4?




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Old 02-18-2006, 03:43 PM
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I think it was a fix to the 87 octane code.
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