EGR disconnect

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Feb 23, 2011 | 11:35 AM

Creosoter

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EGR disconnect

Anybody disconnected the EGR valve on a 6.4? I disconnected the EGR on a 6.0 last year while in CA pulling a 13000 lb 5th wheel. Truck computer said I had gotten 10.1 mpg on the trip from Louisiana to CA. On the way home, it said the mpg was 12.1. That's a 20% increase. On a 400 mile trip empty at 70mph, the computer showed 19.9 mpg (compared to about 15 with the EGR functioning). Unfortunately, I let a Ford dealer re-flash the truck and it all went away.
Curious what happens with the 6.4 under same conditions? Any ideas?
Charlie

Feb 23, 2011 | 06:52 PM

sportsfreaked

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From: Kansas City, MO area

I think that there are tuners that shut down the EGR and only allow it to operate at idle. I think I read that somewhere. Hopefully someone will chime in that knows for sure.

Feb 23, 2011 | 08:16 PM

fg250

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spartan has tunes that will cycle the egr as stock, or some at idle only, and some don't allow it to cycle at all.

Feb 23, 2011 | 09:53 PM

longview1

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The Spartan 210/250/275 have egr cycle at idle only. The higher tunes turn it off completely.

Feb 24, 2011 | 07:59 AM

fg250

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Quote:

Originally Posted by longview1

The Spartan 210/250/275 have egr cycle at idle only. The higher tunes turn it off completely.

actually, the 275 doesn't cycle it either.

Feb 24, 2011 | 08:27 AM

Creosoter

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EGR disconnect

Thanks for the info, but I'm really looking for somebody who has just unplugged the electrical feed to the valve to find out what happened.
Anybody out there?

Feb 24, 2011 | 08:35 AM

fg250

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Quote:

Originally Posted by Creosoter

Thanks for the info, but I'm really looking for somebody who has just unplugged the electrical feed to the valve to find out what happened.
Anybody out there?

it would probably throw a code the first time the ecm told it to open and it didn't.