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Question About Modifying The Afc

Old Feb 13, 2008 | 11:58 PM
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Smile Question About Modifying The Afc

When Talking About Modifying The Afc Housing. What Is It That Other Do? Do You Shave The Arm Or Make More Room In The Housing. Thanks
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Old Feb 14, 2008 | 08:08 AM
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Originally Posted by RUSSELLEE22
When Talking About Modifying The Afc Housing. What Is It That Other Do? Do You Shave The Arm Or Make More Room In The Housing. Thanks
You can either shave the foot off the arm. . .or is that the hand. Or you can take it completely out.
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Old Feb 14, 2008 | 11:43 AM
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Did It Help You Out Much? Or Just Cause Alot Egt's And Smoke?
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Old Feb 14, 2008 | 03:30 PM
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Originally Posted by RUSSELLEE22
Did It Help You Out Much? Or Just Cause Alot Egt's And Smoke?
I tried taking it out and it was crazy smoky. I just moved it forward a bit, so mine is mostly stock.
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Old Feb 14, 2008 | 08:18 PM
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Most people are happy with sliding it forward on the slots and turning the star wheel full forward. All free and reversible changes. Next step is a longer but lower tension spring. Allows better smoke control.
Gutting it gains little except more smoke. Properly adjusted and you still get full rack travel.
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Old Feb 15, 2008 | 12:55 PM
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Just slide it as far forward as you can, and crank the start wheel forward as well.
I think cutting or gutting the afc is foolish, not reversible. The best thing for modifying it is to swap out the afc spring for a lighter spring from TST.
And the reason you want a functioning afc is because when you get as heavily fueled as my trucks, you can't have tons of fuel flooding the bottom end when the airflow isn't there, absolutely kills performance. A functioning afc is also key in getting the best mileage and drivability while cruising.
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Old Feb 15, 2008 | 01:28 PM
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Originally Posted by MikeR
Just slide it as far forward as you can, and crank the start wheel forward as well.
I think cutting or gutting the afc is foolish, not reversible. The best thing for modifying it is to swap out the afc spring for a lighter spring from TST.
And the reason you want a functioning afc is because when you get as heavily fueled as my trucks, you can't have tons of fuel flooding the bottom end when the airflow isn't there, absolutely kills performance. A functioning afc is also key in getting the best mileage and drivability while cruising.

While I'll admit gutting the AFC isn't for everybody, it is still very drivable, even smoke free. Just need a steady foot. Its not a truck you'd want to loan out to an inexperienced driver, since it doesn't take much pedal to start leaving clouds of smoke, but thats just one more reason I have to not lend out my truck. And gutting it is completely reversible.
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Old Feb 16, 2008 | 04:16 PM
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Originally Posted by Tate
While I'll admit gutting the AFC isn't for everybody, it is still very drivable, even smoke free. Just need a steady foot. Its not a truck you'd want to loan out to an inexperienced driver, since it doesn't take much pedal to start leaving clouds of smoke, but thats just one more reason I have to not lend out my truck. And gutting it is completely reversible.
I don't know buddy, put those F1s in and tell me you can still drive around smoke free?
I'm with Mike on this one, once you get enough fuel happening your afc becomes very important on a DD. I would mod the AFC for full travel and keep it whole.
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Old Feb 16, 2008 | 06:49 PM
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The 370's are gonna have to wait, as the 12v is on a stand, not in a vehicle. Thats gonna be a race truck anyhow. I am driving with 150hp DDP's in the 24v with a gutted AFC, 10 plate full forward, and have absolutely no problems driving smoke free. And the 62 is fairly slow to build boost. I can't hot rod smoke free, but I can drive daily smoke free. The twins will help the hot rodding though.
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Old Feb 16, 2008 | 08:58 PM
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.........how would you gut the AFC housing....im new with the 12 Valves
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Old Feb 17, 2008 | 03:02 PM
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Take the housing off. Looking at the front of it, take teh screw off the front, pull the rod that it was locking in, and the foot will drop out. Put the pin an screw back in, put housing back on, and you're done. You can throw the foot away if you like. I keep it in my Cummins tool kit if I ever want to put it back.
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Old Feb 17, 2008 | 08:47 PM
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Not that it matters, but figured I'd chime in:

After reading about the AFC I decided to gut mine and see how it was. Very easy to do and I think the results are well worth it.

It does not smoke unless you want it to. I like the feeling of it much better than before and I think it is more responsive.

Of course it is 100% reversible just incase someone else needs to drive the truck or if I decide to sell it.
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