12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

Egts still warm

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Old 12-07-2015, 12:13 PM
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Default Egts still warm

Installed my killer b finally and still have the hot egts. Must just be the tire size now (37s) and 7in lift? With 3.54 gear ratio.
 
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Old 12-07-2015, 12:27 PM
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Where's your fuel plate set at? That's your egt control.
 
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Old 12-07-2015, 12:30 PM
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#0 plate pushed all the way up. Could my pre boost fueling screw be cranked to far too much fuel before boost.
 
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Old 12-08-2015, 08:09 AM
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Pull the plate back. That's your full fuel setting. In theory you should beable to mat it and stay in it and the egts will level off and stay at your desired heat. Hopefully around 1600 or under. Pre boost is just wasted fuel and it will cause it to heat up a little sooner just like star wheel. But the plate is final egt/fuel. Start there. Your smoke screw is just to light the turbo, when set properly there should be minimal pre boost smoke
 
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Old 12-08-2015, 10:19 AM
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I will be losing power then if I set the fuel plate back.
 
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Old 12-08-2015, 10:26 AM
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Just checked and I have my Pyro tapped before the turbo.
 
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Old 12-08-2015, 11:19 AM
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It's supposed to be tapped before the turbo, ideally on the back 3 cylinders. And no you won't, you can't use all the fuel because your getting too hot. You wouldn't tow, or race or anything over 1600 degrees unless you have a built race engine so why would you need more fuel. Smoke and fuel is not power. Properly burnt fuel is power. 12 valves take a lot more tuning then throwing in a 0 plate full forward and cranking the star wheel. The plate is there for a reason. To control egt's. If you want better tunability get afc live. You will beable to fine tune it to your liking from the cab. You also likely need more timing. Stock timing and dumping fuel won't get you that far.
 
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Old 12-08-2015, 11:48 AM
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Did not like how the motor ran with advanced timing and I have fine tuned it but now it's hotter with this turbo... wide open I hit 1400 not bad and the truck is pretty smokeless when driving it does not poor neither would I let it. I just don't like cruising at 950
 
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Old 12-08-2015, 12:06 PM
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Oh well if it's just your cruising egts it may be your gearing is a bit off like you said. Should be close to 2000 rpm at cruising speed and that should help your egts.
 
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Old 12-08-2015, 03:05 PM
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I am 1900rpms at about 73mph at 6 or 7 pounds of boost
 



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