Ford Designed the AWD in House... - Page 3 - Ford Focus RS Forum
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post #21 of 22 (permalink) Old 02-16-2018, 11:06 PM
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RDU de-activation

Just found out from COBB that there is a "plug" that attaches to the center diff that will DE-ACTIVATE the rear diff. This MUST be done for any and ALL dyno tests! Apparently the car cannot spin a 4-wheel dyno, as there is to be some slippage for the RS System to work, and the dyno will throw that off. So rear wheels MUST be not powered on a test. I can try to cut and paste the COBB explanation if anybody would like to read it.
In addition, if any RS owners have watched COBB U, and seen all their presentations, it would sound/look like that we need a re-tune if we add on a Cold Air Intake and new hi-flow filter!
NOT SO, again, according to COBB: Their examples use a Subaru STI, which IS a MAF sensor determining car. The RS uses MAP tuning, so adding a new filter doesn't change a thing. I can't remember all the details, but can try to cut and paste if anybody wants to read it!
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post #22 of 22 (permalink) Old 07-16-2018, 05:59 AM
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it's just the total system design and arrangement that was developed by Ford's engineering team using Haldex's parts catalog as a basis...
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