Join Date: May 2013
Location: Central NY
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I just picked up a Bully Dog 40410 tuner with the basic intent of bumping the idle up a bit on my 2011 SV to solve the current low idle shake that is so prevalent on these trucks. Maybe it works, maybe it doesn't but it seem like a simple enough thing to try since I am out of Nissan options. However, as I search and read through some threads on this tuner they all read with a similar assumption of understanding just what these units can do. As a complete noob to this sort of thing, if you would indulge me, I thought I'd post a few questions to help bring me up to speed a bit. So I welcome all of your advice and opinions.
I do understand the need to download the software, unit updates and the like from the website so i am good there. But before I go plugging the unit into the truck interface and making any changes I better have an idea of what I might be getting into. I have also had a couple PM chats with a couple very nice forum members who have also provided some nice groundwork but I want to build on that. So here goes.
1) First and foremost, if I plug in and make any changes whatsoever to the current stock programming I can at any time revert back to that current stock state of programming, correct? And, perhaps just as important, just what state of stock does it revert to? What I mean by that is because I have had the latest TSB for the idle applied by the dealer would that be the point it reverts to or would it go back to the original stock programming?
It will read whatever is currently programmed into the pcm, incl any dealer updates, and save it as the stock program
2) For those of you that have used this unit, were there any warranty worries? Does using a unit like this risk voiding the factory warranty? I have read these leave traces of use even when returned to stock programming. Just curious what your experiences have been on this front
Never had an issue with it but IF your dealer wanted to be a douche I suppose they could technically deny you a related warranty service. However, there is no way that any dealer tech would be able to tell that you have the tuner if you returned it to stock and removed the unit before taking it in for warranty repairs assuming that you don't leave all of the wiring/connectors hanging out under the dash right next to the OBD port that they will have to tap into for repairs or updates
3) Because I have read about three things specifically these are commonly use for: WOT (no longer available) wasn't aware of this. It's still avail for my '11 which I believe is the same tune for the '12, not sure on the '13, idle and 2* advance what other applications, parameters or changes have you had good successes with that?
It also has gauge pod features that allow you to create your own ideal gauge cluster. Another cool feature is the "driving coach". It is basically a nanny that tells you when your driving is hurting possible mpg. Basically it beeps and the green light goes yellow to red when you are accelerating too quickly or decelerating too quickly to teach you how to be a fuel miser and it grades you on each driving cycle. It's fun to play with and it WILL get you better mileage if you don't mind driving like your grandma.
It can also read and erase codes, which occasionally comes in very handy
4) If I am using regular/87 octane fuel is there a standard or built in ‘tune’ program to apply?
Yes, just set the 87 octane tune and it will do the rest. Just folow the direction prompts on the screen during install
5) What changes have you made that have given you the greatest, quantifiable MPG increases?
Without a doubt just following the driving coach feature. The rest of the mods just make you want to smash your foot to the floor constantly which has the expected affect on mpg ; )
6) Given that giant plug on the rear of the rather small unit what mounting options and/or locations have you found that you like? I have the suction cup windshield mount but and thinking about something a little more permanent or less obvious to the outside world. Perhaps down on the center console. I did see a RAM ball mount that could have some merit.
There is a thread dedicated to where users have mounted these. It's basically your preference. I used the suction mount on my 06 and just drilled a tiny mouse hole in the A pillar bezel to run the cable through. Makes it a bit tough to pull it out for visits to the dealership though.
Thanks in advance and hopefully others will find this discussion helpful as well.
I had a similar issue with mine on the update side. I'll have to check and get back with you on the year range, but it's nissan/infiniti.
Once it says "initializing communication" it's looking for the OBDII connection with the truck's ECM. Following the foldout instructions that came with the tuner to "connect to your vehicle". Before connecting tho, make sure you've downloaded the latest bullydog updater, and you have the correct software on the GT for your year. Will edit this once I verify the year/model info on mine.
EDIT: Mine is showing `07-`12 Nissan/Infiniti on the boot screen. You need to download the correct binary files through the updater. It's been a while since I did mine, so I can't give you any help on that (forgot what I did to get it) but you could call their tech support number and they can send it to you and tell you how to load it on the tuner in USB mode.
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