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JFairman JFairman is offline
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Join Date: Jul 2006
Location: S. Florida
Posts: 7,274
Originally Posted by boosted 89 View Post
Thanks. 911st

How do you determined if the FD has been upgraded..mine is a grey/aluminum
Take a picture of it and post it here.

What you can see on the outside..
The short 12mm wrench size fuel supply banjo bolt and banjo fitting for the frequency valve is removed and a plug is screwed in in place of it.

Then the longer 12mm wrench size return line banjo bolt is removed along with the frequency valve's return line banjo fitting thats piggybacked onto it with the WUR return line banjo fitting.

Then the shorter 12mm wrench size banjo bolt that was used to supply fuel to the frequency valve is screwed into the fuel head where the longer banjo bolt was because only the banjo fitting return line from the WUR is installed on it after the frequency valve has been removed.

If the fuel head was modified by flowtech there will be a dab of green or brown paint on the edge of the 4mm differential valve spring tension adjustment cover button head allen screws on the top and on the Torx screws in the bottom.
There is no locking or modification ID paint on stock fuel head screws.

A CIS Flowtech modified USA aluminum lambda fuel head usually has the Bosch ID tag removed and "CIS M 007" is stamped into the housing.
You can see that in this pic.
Old 05-11-2010, 10:04 AM
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