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Old 08-16-2010, 11:20 AM
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635CSi 635CSi is offline
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Join Date: Sep 2005
Location: Toronto
Posts: 153
Quote:
Originally Posted by babymog View Post
My '91 had the 55 trim.

The .970 (1991) IP should deliver more fuel vs RPM because of the power curve, but I haven't verified. The down-side is the lower RPM limit of the .970.

I'd keep the .970 IP on the car, because the limits will match the transmission shift points. If the engine were going in with the '87 transmission and it's higher RPM shift points, I'd either turn up the .970 or fit the .960 IP.
I was planning on taking out the engine and transmission out together, the transmission in the 87 300SDL was bought from the dealer 2 years ago so I would rather use that one.
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90 350SDL (Rudolph)
91 350SDL (300SDL drivetrain)
87 BMW 635CSi (Swanhild)
89 BMW M6 (euro)
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