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Go Back   TDR Roundtable > RAM: The Third Generation - 3G (2003 - 2009) > 6.7L Engine and Transmissions (2007.5+)

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EGR Delete Knock reduced by MP-8
Old 05-03-2008, 01:12 AM   #1 (permalink)
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Join Date: Sep 2002
Posts: 42
Exclamation EGR Delete Knock reduced by MP-8

Well,
I have been playing around with my Edge & MP-8 to see if I can lessen the knock that shows up at low RPM since I did the EGR delete.

Setting the MP-8 at 75% and Edge at level 3 seems to be a good balance but the knock is still very noticeable when first starting up in the morning, and when accelerating from low RPM.

I read through all the posts I could find on the "EGR Delete Knock" and came to the conclusion that it is caused by not enough fuel at low RPM(as dictated by the ECM look-up tables). I don't know if the ECM is retarding the timing or not as part of the process and no one seems to know for sure on the forums.

In Any case, (sorry for the long winded post) with the Edge on level 3 and the MP-8 turned all the way up there is a NOTICEABLE decrease in engine knock. I am thinking about upgrading the tips on my injectors to get more fuel into the cylinder with each event (or better dispersion) to see if there is a further decrease in knock.

I heard rumors that adding an FASS system to the trucks is also helping the knock issue but no one has confirmed it for sure.

Is anyone else playing around with trying to reduce the knock?

Cheers,

Yukon Chris
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White 07.5 2500 Mega 4X4 Laramie 6.7l, Slider 5th Wheel, Lights, Wheels, AV Package, Edge Juice w/ Att, BHAF, MP-8 & 5" BADP 5"TB, EGR Deleted
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