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I'm not too sure about a tow/brake tune with the switch. I would assume you can get a little more power out of it? But I was under the impression of a tow/brake tune basically limits the truck to keep everything safe while towing so you can't flip it over to a 150hp tune and blow up.
 

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... The SOTF tunes are designed for max performance (if you buy up to that level) and with the switch, simply cuts fuel, timing and boost. ...
This is what I can't wrap my head around. Granted, I know very little about tuning, but how can a switch that's only tied into a single sensor adjust the timing maps? Boost would be limited a bit due to less fueling on lower levels, but I just don't see how timing can be adjusted.
 

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The way I'm guessing, is obviously if it limits boost from a higher tune, there must be something written in there telling the PCM to either pull, or add timing. I mean, it makes sense. You're not going to command more fuel and boost and have the timing at the stock setting. That just sounds like a recipe for disaster.
 

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Discussion Starter #24
So with that in mind, when you are on a "single" tune (like the tow/brake), does it matter which position the switch is in?

I just got the EZLYNK with the Tyrant tunes, so still playing with the different levels using the SOTF switch, so can't comment yet on being able to tell the dif. I started on 2 and switched to 3 now. That seems like a good level so far.

The tow/brake tune if freakin' awesome for towing my 16K lbs 5th wheel!! Love it!!

Mark
How are you liking the shifting point and hows the throttle response? Any lag?
 

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Discussion Starter #25
You're talking about totally different things. The difference is with a full dyno tune is adjusting every parameter you can to squeeze out as much as you can without breaking it. The SOTF tunes are designed for max performance (if you buy up to that level) and with the switch, simply cuts fuel, timing and boost. So yes, they are safe, and are not changing the entire map of the truck on the fly, that would be ridiculous. This is my take on them, I could be wrong on it.

I personally don't care for them though, I don't really believe in them. Haven't been in a 6.7 with them, but my friend had an 06 LBZ with PPEI SOTF tunes, and I couldn't tell a difference when the switch was on 3, or 5. Only thing I could tell when it was on 5 is that it didn't have enough fuel which on a Dmax is a common problem with HP tunes.
Yeah that's what i gather from all the info in here too. I don't mine how the tune are set up. As long as its safe and stuff don't break from a bad tune.
 

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This is what I can't wrap my head around. Granted, I know very little about tuning, but how can a switch that's only tied into a single sensor adjust the timing maps? Boost would be limited a bit due to less fueling on lower levels, but I just don't see how timing can be adjusted.
Me too!! Some switches connect to the fuel temp sensor, while my No Limit switch connects to the air temp sensor!!

Mark
 

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How are you liking the shifting point and hows the throttle response? Any lag?
Love the shifting!! And the lag is all but gone. Tyrant got it right!!

Mark
 

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If you're looking for comparison, I have Tyrant, then bought Gearhead(which I think were really No Limit tunes because Gearhead doesn't suck at all) just to try and compare. There is no comparison. Their Extreme felt like my Tyrant Performance, I've never tried the Tyrant Extreme. I know guys have GDP and say those are excellent too but I don't have experience with that. I can absolutely recommend Tyrant 200% though.
 

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Discussion Starter #30
If you're looking for comparison, I have Tyrant, then bought Gearhead(which I think were really No Limit tunes because Gearhead doesn't suck at all) just to try and compare. There is no comparison. Their Extreme felt like my Tyrant Performance, I've never tried the Tyrant Extreme. I know guys have GDP and say those are excellent too but I don't have experience with that. I can absolutely recommend Tyrant 200% though.
Yes i'm looking for comparison. I hear tyrant was the tune to go with. I bought my truck with 62k and it was already delete and tune. The guy just told me it was on a mild tune. No tuner hook up or anything. The truck runs fine and now its at 126k and no problem but i'm looking for adding a ezlink and tyrant tune.
 

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Did you have someone else tune on before or just stock and now delete with Tyrant tune?
I did a full deleted about 1 1/2 yrs ago and went with the H&S Mini Maxx and canned tunes...whenever EZ LYNK was just barely on the market at the time. I REALLY wish I would have just gone with it, but I was a little scared of something that new. The Tyrant tunes make the canned H&S tunes look really bad!! I really like everything about the new tunes.

I do wish someone who really knows would explain how the SOTF really works...what it actually does.

Mark
 

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Discussion Starter #32
Does anyone know if the ezlink will be able to save my current tow tune i have? The truck was delete and tune before i purchase it and it didn't come with a tuner. I wondering if i can use my current tune with the ez link with a hot tune.
 

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Does anyone know if the ezlink will be able to save my current tow tune i have? The truck was delete and tune before i purchase it and it didn't come with a tuner. I wondering if i can use my current tune with the ez link with a hot tune.
I know most any tuner backs up and saves the original stock tune on a truck when you go from stock to tuning with deletes. I am not sure if they will do it with a tune already loaded, although one would think they are the same. You would have to contact your tuner of choice and ask them.

At the very least, I would think you would be able to install the Ez-Lynk and data log the current tow tune you are talking about. You could then wirelessly send that information or "profile" off to your tuner and they could replicate it and send it back to your Ez-Lynk unit. Odds are though, the tow tune that you get from Tyrant or GDP is going to better then the one you already have.
 

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Discussion Starter #34
I know most any tuner backs up and saves the original stock tune on a truck when you go from stock to tuning with deletes. I am not sure if they will do it with a tune already loaded, although one would think they are the same. You would have to contact your tuner of choice and ask them.

At the very least, I would think you would be able to install the Ez-Lynk and data log the current tow tune you are talking about. You could then wirelessly send that information or "profile" off to your tuner and they could replicate it and send it back to your Ez-Lynk unit. Odds are though, the tow tune that you get from Tyrant or GDP is going to better then the one you already have.
I was thinking the same thing that since it save the factory map before putting the deleted tunes on. I'm sure the tyrant tune will be a lot better than what i have now but i was just trying to find a way to save a few bucks. Also i don't feel the need to run a bunch of different tune. A tow and hot tune will be enough for me.
 

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Discussion Starter #35
I just order my EZ-Link today with Tyrant tune. I hope i don't regret this tune over my current one. I will update with my review.
 

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Discussion Starter #36
Question for anyone running the tyrant tune and is on a 11-14 model. What boost level are you seeing? My truck on the SOTF 0-155hp and 0-165hp smokey tune only sees 26psi. I would think its a little more. I even try lower setting and notice same boost level but you can tell it pulls weaker. i'm thinking that's because of less fuel and timing.
 

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My truck would hit 28-29 on it.
 

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I am running a tyrant street tune - i see 26-28 as well

I found a good thread on a different forum stating that 28 was the max tuners were typically allowing on the 11-14 trucks due to the turbo limitations.
 

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Discussion Starter #39
@jman37 and Cmunsell.
I guess mine is around right than. My vendor did say that's where they want it to be only because of the limitation of the turbo.

I notice my mid range isn't as good as my last tune. I don't know if i just have to get use to the new tune or what about i have try different setting and on the SOTF level 2 being a tow tune. Compare that to my last tune. I kinda like my old tow tune better. I'm not completely sold yet on the level 2 tune. I feel the truck is holding 4th gear too long for daily driving. On my old tune. The truck shifts perfectly and smooth threw all gear without holding any gear. I like that more. When i do turn on tow/haul mode. The truck will hold gear longer for better power and down shift gear to slow down the truck. On the Tyrant tune with tow/haul mode. i barely notice a different than without it on.
 

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Discussion Starter #40
Have you guys have any luck with your vendor replying back to you threw the ezlink? I have message my vendor threw ez link with no response back. I was e-mailing them by personal e-mail but they have stop replying back to me also after saying they will send me a revise map/file. It's been about two week and i sent them a check up e-mail and still no reply.
 
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