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Old 08-13-2007, 07:05 AM   #1
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Default Dual Fuel Feed - an Alternative?

So i read about the dual fuel feed modification that's being done and decided to do it too.
Only thing is i decided I would weld it, for the sake of completeness.
Now, for the usual mod, the second feed would be tapped at the END of fuel rail, after cylinder number 4.
I sent it to the shop with the above instructions and of course, they decided that they had a better way of doing it. What they've done is tap the second feed between cylinder 3 and 4, just before the return.
I'm just wondering, are there any negative implications to this?
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Old 08-13-2007, 08:12 AM   #2
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Yes there is that wont work as well. Tell the shop they are idiots and cna DIAF and then take off there bull **** and do it properly. If htey wanted to do **** a better way they would have relocated the return to between 2/3 and put the other feed on the end. what kind of shop are you dealing with that blatently diregards what you tell them to do? I hope you did not pay for that stuff. Grab some JB weld and get that sucker done right but yo might need a new fuel rail by now :(
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Old 08-13-2007, 11:20 AM   #3
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Put in the correct sized plug (1/8" NPT) and use a good thread sealant. Make sure it doesn't protrude into the rail more than necessary.

Re-drill and tap.

Or run it the way it is, as I doubt there will be any really appreciable difference between yours and how others have done it (or a stock rail for that matter).
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Old 08-13-2007, 06:57 PM   #4
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the whole point of doing it at the end of the rail is to help ensure #4 gets the same amount of fuel before exiting the FPR....not before it....
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Old 08-14-2007, 11:01 AM   #5
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hmm. ok. So I gather I've just made a useless modification?
Now tapping before the exit means that I'm back to square one?
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Old 08-14-2007, 11:47 AM   #6
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Beat them with a stick and make them buy you a new rail and do it correctly.

As stated... entire point is to feed after the FPR so you get consistant fuel pressure across the rail.
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Old 08-19-2007, 10:45 AM   #7
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sigh. Ok. So what happens now that it's feeding before the fuel rail? I'm back to square one?
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