View Single Post
RarlyL8 RarlyL8 is offline
Crotchety Old Bastard
RarlyL8's Avatar
Join Date: Jan 2000
Location: Huntsville, AL
Posts: 14,101
We talk a lot about adjusting the WUR because most of them are very old and out of spec or used on modified engines. Adjusting them is usually a one-time deal. You check your A/F ratios, adjust if needed, and lock it down.

Could be that the WUR name stuck (pre-911) because the cold pressure function is most noted when it falls out of spec and your car becomes difficult to start. The dealerships and shops simply tossed it out and installed a new one. I guess we should be thankful that Bosch did not incorporate the WUR into the fuel head.
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
Old 09-22-2007, 06:02 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #56 (permalink)