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RarlyL8 RarlyL8 is offline
Crotchety Old Bastard
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Join Date: Jan 2000
Location: Huntsville, AL
Posts: 13,685
438120205 is the air meter assembly. The aluminum USA FD P/N is 438 100 145, black steel Euro is P/N 438 100 037. You're not going to get a different answer on FD/WUR compatibility, the system pressure spec is different for USA vs Euro and the WUR pressure ranges are set to match. You can mix and match WURs but the results are not optimal. A USA WUR paired with a Euro FD is more compatible than a Euro WUR paired with a USA FD. If you have Lambda things are further complicated.
RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8

Last edited by RarlyL8; 03-27-2016 at 11:54 AM..
Old 03-27-2016, 05:31 AM
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