Custom SCT tune - Ford Powerstroke Diesel Forum
6.0L Performance Parts Discussion What has or has not worked for you?

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post #1 of 12 Old 12-17-2012, 03:24 AM Thread Starter
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Custom SCT tune

Noob question but I bought the sct x3 from mkm customs and it
Comes with 3 free tunes... So this means they will email me those tunes based off my truck an what I ask them for? If so I know there's a way to delete the egr without a kit. Is that something I should look into or keep the truck as is which is stock and just get a better fuel economy tune which isy desired end state.
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post #2 of 12 Old 12-17-2012, 09:38 AM
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Yes you send them the info on your truck and they will send you the tune you want with your trucks information. The SCT can delete the EGR in terms of the check engine light. The only way to actually delete the EGR is to get a delete and install it. The tuner will only turn of the light IIRC

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post #3 of 12 Old 12-17-2012, 09:41 AM Thread Starter
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First off thanks for your reply its helpful. Secondly seeing as delete kits are illegal, would it benefit to unplug it while the truck is off to keep valve closed I'm basically just trying to save mpg for a trip I'm taking or just go with the tuner on economy?
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post #4 of 12 Old 12-17-2012, 09:42 AM
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I am not sure about that one. Hopefully another member with more info will chime in. Sorry

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post #5 of 12 Old 12-17-2012, 10:12 AM
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Quote:
Originally Posted by zdawg801 View Post
First off thanks for your reply its helpful. Secondly seeing as delete kits are illegal, would it benefit to unplug it while the truck is off to keep valve closed I'm basically just trying to save mpg for a trip I'm taking or just go with the tuner on economy?
Keeping the valve unplugged can cause the fan not to engage when needed or not engage fully.

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post #6 of 12 Old 12-17-2012, 11:18 AM
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There is NO benefit to unplugging the EGR valve EVER (even if the EGR cooler is gone). Some trucks don't exhibit any problems if they remove the valve completely but I wouldn't chance it as some do. Just delete the EGR in the tuning and call it a day. The ECMs on these trucks are VERY sensitive to not leaving things plugged in. Chances are if you do unplug it, the truck won't make as much power as if it were plugged in. Just my $.02

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post #7 of 12 Old 12-17-2012, 12:31 PM
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I always thought the "3 free tunes" were the canned tunes the device came with. That's how it was presented to me when I purchased mine in 2008.

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post #8 of 12 Old 12-17-2012, 02:55 PM
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Quote:
Originally Posted by windrunner408 View Post
There is NO benefit to unplugging the EGR valve EVER (even if the EGR cooler is gone). Some trucks don't exhibit any problems if they remove the valve completely but I wouldn't chance it as some do. Just delete the EGR in the tuning and call it a day. The ECMs on these trucks are VERY sensitive to not leaving things plugged in. Chances are if you do unplug it, the truck won't make as much power as if it were plugged in. Just my $.02
My 04 started to overheat as a result of the unplugged egr valve. Fortunately I was able to plug it back in and drive on.

Leave it plugged in and disable with SCT tuner. Doubt your will see mpgs go up but I suppose it's worth a shot.

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post #9 of 12 Old 12-17-2012, 03:01 PM
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Quote:
Originally Posted by windrunner408 View Post
There is NO benefit to unplugging the EGR valve EVER (even if the EGR cooler is gone). Some trucks don't exhibit any problems if they remove the valve completely but I wouldn't chance it as some do. Just delete the EGR in the tuning and call it a day. The ECMs on these trucks are VERY sensitive to not leaving things plugged in. Chances are if you do unplug it, the truck won't make as much power as if it were plugged in. Just my $.02
Not trying to hijack his thread, but any idea which strategies are affected or lose power with the EGR valve unplugged?? I have seen several people say that it affects the fan and such but I have never seen year models or strategies that show which ones. And since I'm posting anyway, I did not see any mpg gain by doing my EGR delete. Might have actually saw a lose. But that could be because I have the block off plate installed and no EGR valve.



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post #10 of 12 Old 12-17-2012, 03:41 PM
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Quote:
Originally Posted by Dirty_Stroke View Post
Not trying to hijack his thread, but any idea which strategies are affected or lose power with the EGR valve unplugged?? I have seen several people say that it affects the fan and such but I have never seen year models or strategies that show which ones. And since I'm posting anyway, I did not see any mpg gain by doing my EGR delete. Might have actually saw a lose. But that could be because I have the block off plate installed and no EGR valve.
The only two I'm aware of is the 06-07 trucks with VXCF9 strategy causes fan not reaching full RPM. The other is 03-early 04 with VXAP2 strategy causes no vane sweep. There may be more, not many monitor fan speed on a daily basis to document which years and strategies have side effects of unplugging EGR valve.


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