Tuned *and* deleted?

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Sailing Santa

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I bought a ‘16 2500 6.7HD, and it came (to me) “fully deleted”, and it has a five position rotary switch/knob - supposedly for a tuner. First let me say, twiddling the knob produces no apparent changes in mileage or performance. Second, I always thought that the tuners acted primarily on the emissions garbage added onto the engine. So, with that thought, this is a dead and useless knob. The harness from this piece of detritus disappears into the dash to places unknown. I don’t know if it’s actually connected to anything.
Am I correct in thinking that tuning and deleting are at cross purposes? If not, I’d like to install a Banks unit. I’ve got everything else from them installed already.
 

crash68

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If a truck is deleted it must have a tune or the engine wouldn't run and dashboard would look like a Christmas tree. Now how much the engine is tuned for power/fuel economy depends on who tuned the engine and what the person who installed the tune paid for.
As for the Banks stuff, you'll probably need to return the vehicle to stock as their stuff all has an E.O. number which means it meets the CARB and Federal emissions standards. Depending on how mild or aggressive your current tune is, the engine may not run correctly or be detrimental to itself.
 

MADDOG

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Sounds like the programmer was removed so you have no tunes to select via the knob.

If there are no differences in how the truck runs regardless of switch position then that confirms for me that there is no programmer on the truck or the switch is not connected to one.

My '17 was fully deleted and tuned. The Edge programmer I used included a display that I mounted in the A-pillar as shown below. Having the tune on a deleted truck is not a conflict. Rather, the tune was needed to manage the PCM program to avoid throwing codes because some of the stock parts are missing. Also, the tune takes advantage of being able to tweak engine performance parameters which it can't do until the Cummins unlock is completed using the programmer. My '17 ran much better with the full delete and custom tunes. When I turned it to the 5th position on the switch it was a real beast.

The truck may have been returned to stock tune before the programmer was removed which a lot of owners do but it would be throwing a lot of codes.

You start with a stock tune flash to the PCM then go from there.

2017 56.jpg
 

chri5k

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You may want to check under the hood for the EGR system. It might still be there but commanded to 0 by the tune. Next check the exhaust system to see if it has the SCR and DPF. These will be very noticeable as large "bulges with wires and tubes sticking out of them" in the exhaust pipe. If the emissions equipment has been removed, I would not put a stock tune on it since it would start to throw codes due to the missing parts. Your best would be to contact one of the custom tuning shops to see about getting a tuner and some tunes from them so they will provide support for any PCM tuning related issues.
 

mtnrider

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You are not going to "feel" the difference turning the knob (for the most part). You'd really have to do some full throttle pulls or get on a dyno to see it. And I don't recommend that by the way unless you want to buy a new transmission.... I advise you keep the knob turned all the way counter clockwise to the lowest setting. Also do not disconnect it, if it is a CCV type switch it will default to the highest HP setting, and there goes the transmission again

Banks does not have a tuner for these trucks and never will have a delete tuner so you are out of luck there. And don't fall victim to the banks sales pitches....

Basically you are stuck with what is loaded on the truck (which you have no idea what that is) or purchasing new delete tuning and hardware from Canada.

.
 

nlambert182

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I bought a ‘16 2500 6.7HD, and it came (to me) “fully deleted”, and it has a five position rotary switch/knob - supposedly for a tuner. First let me say, twiddling the knob produces no apparent changes in mileage or performance. Second, I always thought that the tuners acted primarily on the emissions garbage added onto the engine. So, with that thought, this is a dead and useless knob. The harness from this piece of detritus disappears into the dash to places unknown. I don’t know if it’s actually connected to anything.
Am I correct in thinking that tuning and deleting are at cross purposes? If not, I’d like to install a Banks unit. I’ve got everything else from them installed already.
If you delete the emissions system from a diesel, it HAS to have a tune on it for the computer to allow the truck to function properly. Otherwise the stock tune will think the emissions equipment has failed and will put the truck into limp mode.

You could have one stock HP tune loaded on the truck and the previous owner may have taken the tuner with them. If it were me..... I wouldnt worry about it and run with what you have. The 68RFEs don't take well to cranking the HP anyhow.... I always ran mine on the stock HP tune. As for Banks.... eh..... I haven't heard much in the way of positive reviews in regards to their tunes.
 
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