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That’s why it’s tamper-proof. ;)

You can do it yourself on the engine by pulling the injection pump gear off and backing the engine up or by “spill timing” it, or send the injection pump out to any pump shop and have it changed internally so you can then just easily install and pin time it (can’t miss). Details for doing it...

You’re right, screw is initial, and star wheel is rate. Some have taken the jamb nuts right off the back of the main fuel rack and been fine, depends on how much load you will pull and if you want to drive by the EGT gauge or not.

I think pre-boost fuel and star wheel is same thing? Just don’t go too many amps.

Agree with above. Timing increase is not supposed to add hp to an otherwise stock engine, but it is reported to add efficiency (MPG), and then help additional mods take hold even better than they would with stock timing. This is what the RV group indicates, which appears to be the largest...

Yep. EGT gauge and then the video will be more than enough to get you in trouble. Move the injection timing to 16 degrees if you really want an efficiency boost as well.