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Discussion Starter · #1 ·
I am looking for Pump mods, i know there are things like changing the arm length using different springs using washers and a different bolt?
What i am wondering is becuase i cant search for afc i cant find all the different pump mods and afc mods that can be done...i would like some in depth directions or places for me to look to find these topics.
 

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Discussion Starter · #2 ·
bump.....anyone.....
 

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i would say just gut the afc by removing the whole arm assembly! as for pump mods get your 3 or 4k gsk springs and cut your own plate down
 

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Discussion Starter · #5 ·
could you go into a little more detail for me on the spring and its function an the spring rate you used and also a little more detail about the washer? i am putting together a binder on my truck and trying to learn all i can about the fueling system, also the post at the diesel garage is good! also where does the 2095 plug go?
 

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The spring pressure/rate determines the amount of boost required to move the AFC arm x amount of mm. I tried TSTs light spring but it was way to light. Right now I have there heavy spring (lighter than 215 spring but heavier than 160, 175, & 180 spring) and its still a too light but close enough to be adjustable. When I get a larger turbo I'll go back to my stock 215 spring.

The stock washer is cup shaped and the lip on the cup hits the housing before anything else. Even in full forward position a stock AFC will bottom out before the governor arm reaches an aggresive plate. In this situation the plate is useless. By removing the cup, or switching the washers you allow a few extra mm of travel for the AFC arm, which allows the governor arm to ride on the plate like intended.

The 2095 plug, aka "mack plug", goes in the end of the p-pump. In all but the 215hp pumps the rack will bottom out on the stock rack plug before ideal rack travel is reached. Again a plate may be useless in this situation. The 2095 plug is like 2mm deeper and allows that much more travel, to obtain full 21mm of rack travel.

After much searching I found the picture I was looking for. The plug sticks out pretty well and is hard to miss (incase you do its the pewter one :SMART:)
 
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