all afc star wheel and pre boost(smoke screw) waste gate answers - Dodge Cummins Diesel Forum
94-98 Performance Tech articles dealing with gaining power from the 2nd gen 12V engine

 
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post #1 of 9 (permalink) Old 12-28-2009, 10:00 PM Thread Starter
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Smile all afc star wheel and pre boost(smoke screw) waste gate answers

Ok theres to many threads about this so im guna sum it up.
Star wheel. Under allen head plug on top of afc turn towards engine for better throttle response (quicker fueling)
Pre boost aka smoke screw. On back of afc under cap. Turn it in or tighten it for more fuel from 0 to 10 psi of boost. Make it flush with locknut and screw star wheel all the way for max low boost fuel and plenty of smoke.

Afc slide. 2 8mm allen heads a flat head and breakoff screw loosen them to slide afc forward. Take out and remove afc. To gain access to fuel plate.
Break off screw just chisel it off or cut flate.head in it with dremel or hacksaw.
Slide afc to to get more power.
Fuel plate. Running no plate is safe you get max fuel all the time. Remove plate cut #100 profile its best in my opinion or order pre cut. The more agressive the profile the more power your guna get.
Waste gate. Plug with stock injectors you can control boost with your foot. Or get a 1/8th inch needle valve throw away stock elbow and put needle.valve in place use hose adapter works like boost elbow but cheaper hahaha.


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post #2 of 9 (permalink) Old 12-28-2009, 10:58 PM Thread Starter
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Also sliding the stock plate adds power. And you dont need to worry about egts with just star wheel cranked stock plate.slid and pre.boost adjusments

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post #3 of 9 (permalink) Old 12-29-2009, 01:26 AM
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anyone who bottoms out the smoke screw on the back of the afc to get max no boost smoke is a retard.


oh what did i say ?

congrats bud, u have stock injectors, no balls and your driving around pretending your making power

:


wake up.... does your truck smoke once it u have 10 psi boost? NO??

NO BALLS !!!!
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post #4 of 9 (permalink) Old 12-29-2009, 07:38 AM
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Quote:
Originally Posted by Kronic_187 View Post
anyone who bottoms out the smoke screw on the back of the afc to get max no boost smoke is a retard.


oh what did i say ?

congrats bud, u have stock injectors, no balls and your driving around pretending your making power

:


wake up.... does your truck smoke once it u have 10 psi boost? NO??

NO BALLS !!!!




He was trying to help people out and answer all there questions in one thread. so get off him for trying to help people out. i dont see you giving anyone advice so.......

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post #5 of 9 (permalink) Old 12-29-2009, 08:48 AM Thread Starter
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Shell smoke to 25psi

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post #6 of 9 (permalink) Old 12-29-2009, 10:06 AM Thread Starter
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Make this a sticky

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post #7 of 9 (permalink) Old 12-29-2009, 11:21 AM
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you don't bottom it out.... you screw it in until you just feel it touch the diaphram inside.

BUT, people who arn't adventurous enough to take the AFC off and apart to see how it works.... should not even be playing with it at all.

setup properly, your AFC controls your fuel delivery.

setting it so your pumpin full fuel @ 0 boost not only is retarded, but your actually delaying spool-up. Hindering preformance.

If your using HIGH egt to spool a turbo, those same EGT's will remain all the way through the powerband, hurting you on top. i'm willing to gaurantee this guy can hit 1300 or so within about 10 seconds.

also gauranteed this is also one of those guys that will drive around, and wait for the TC to lock up in 3rd with OD off, then lugg it to leave a cloud until it spools..... that is the only reason to set your fueling up this way..... NOT preformance. especially with a stock turbo.

Last edited by Kronic_187; 12-29-2009 at 11:25 AM.
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post #8 of 9 (permalink) Old 12-29-2009, 11:56 AM Thread Starter
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My egts get to that only when the waste gate is fully clsed

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post #9 of 9 (permalink) Old 02-11-2010, 08:16 PM Thread Starter
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new. to gut the afc. pull it off theres a bolt on the front remove it. then with a screw driver pry the tear drop shaped thind that the bolts holding off that will let the foot fall out. then replace tear drop thing replace the bolt and put afc back on the pump

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