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Aug 30, 2016 | 10:00 AM

#61

Iaff113

Thread Starter

Laughing Gas

Joined: Oct 2012

Posts: 1,202

Likes: 1

From: Frederick MD

Hey also on this x4 I see on some tunes it has an option to turn off EGR is this used to get rid of the CEL. Or does it turn the valve off?

Aug 30, 2016 | 12:04 PM

#62

WatsonR

Lead Driver

Joined: May 2014

Posts: 6,545

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From: Virginia Beach VA

turns off the CEL. You want the EGR to work, it controls the fan speed, not just the valve opening and closing.

Aug 30, 2016 | 12:22 PM

#63

Toreador_Diesel

FTE Leadership Emeritus

Joined: Sep 2003

Posts: 12,258

Likes: 770

From: Houston, Texas

Quote:

Originally Posted by 6.0Vanman

Just looking for more clarification as I look for the holy grail of tunes (does it exist?). From what I've gleaned is PHP usually flashes a 2005-2007 truck to the VXCF4 stragegy which seems odd given your rationale above. I believe that IDP uses the VXCF9 strategy and Gearhead the VXCF5. Not sure they change that if you tell them you have the Atlas40.

Still waiting on a revision from Gearhead but I think I might try PHP. I suspect they know how to make a PCM tune play well with their FICM tuning.

That they do....

Given my rationale above is exactly why PHP rolls people with a 2005-2007 Super Duty back to VXCF4H2; it runs great and plays well with the Atlas 40.

Quote:

Originally Posted by AGE mechanic

My truck has that VXCF4 strategy and runs VERY good with the SRL+ and Atlas 40. You could almost call it, CRAZY good.

What version of VXCF4 are you running?