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I have loosened everything as much as I can. I may have to take off connectors to provide more slack ( which I prefer not to do). I will call Dinan tomorrow. Their intructions show arrows to the areas where the sensors are but I do see the harness pulled to the side in any of their pics. At least 3 inches of slack is need to get to both passenger side sensors. I have done many upgrades,but this one is not easy as the instructions depict.
I actually agree with this. I've done this install a few times and I can never manage to get much slack from the front engine harness, it really makes getting to two of the four sensors a major PITA. I've followed the instructions perfectly, counted all bolts/screws and even used another installation guide from a different piggyback manufacture as a supplement to Dinan's... still, I can only manage 1-2 inches slack from the harness. It's just barely enough to squeeze in there with some pick tools to undo the sensor and use a few fingers to finagle the Dinan plug in. It would be great if someone had tips on how to get more slack from the front engine harness.
I would NOT cut those factory zip ties though, I think they would be nearly impossible to put back on since they were likely installed when MB assembled the harness.
Since Dinan did the harness install for mine I can't speak to the Dinan harness, but I previously installed the Rebellion harness and that was the same experience, you'll get 1-2 inches of slack, and then if you really put some pressure you'll get the last bit. But it's going to be tight either way. Just take your time.
The instructions do not tell you,but it helps to release the remaining sensor connectors that feed the harness along the fuel rail. You might consider an extra pair of hands....one person to pull the harness while you pick at the sensor connector in question.
Ok got finished with the install -- Was kind of a PITA but doable. Getting to the sensors and plugging in the new harness especially #2 was a *****. Having 2 people would be helpful as Art had mentioned, to pull the harness up and hold it while you try to plug in the DINAN harness. The instructions from DINAN were sparse but was enough get you through the install. I found that if you can cup your hand (facing upwards) you can barely reach the clip release from #2 then take a flat head screwdriver and pop it off through the top of the hole. Here are photos of where harness 3 and 4 are to compliment the Dinan instructions. Also in step 4 of the instructions, the photo shows the airbox and intake ducts still on -- At this point, it should be off. Also, remember when you go to unplug 1 and 2, label them, or set them far enough apart, so you don't confuse it later when you go to plug it into the DINAN harness. I mixed them up, but think I got it right (50/50 chance, no CEL light and runs so I guess I got it right lol) -- Dinan instructions read you should get 5-6" of movement from the harness to access the sensors, I was only able to get about 1". Cutting the plastic ties is not necessary as OP asked.. Overall I'm very satisfied with the results. The car pulls significantly harder now and from a rolling 10mph start in Sport+, the wheels break loose a little. Probably will go get it dyno'd soon. Glad I went with the DINAN piggyback, as this is my daily and I can't afford to ship my ECU out to have it tuned and untuned when I return the car after the lease is over. It's plenty of power for a daily for anyone considering this tune, I would recommend it. And nice thing is you can uninstall it and sell later on if need be. Also, I'm left with one black screw, 2 go to the coolant tank, where's the last one go? And where did you guys mount the ECU?
Has anyone in Canada done this update, particularly in Alberta? I tried to order this directly from Dinan and I keep getting a message they won't accept international orders via credit cards. I would love to get from someone local if possible.
Has anyone in Canada done this update, particularly in Alberta? I tried to order this directly from Dinan and I keep getting a message they won't accept international orders via credit cards. I would love to get from someone local if possible.
Don't know anyone in Canada but you can contact Golan from Autotalent, I'm sure he wouldn't have a problem sending to Canada
Ok got finished with the install -- Was kind of a PITA but doable. Getting to the sensors and plugging in the new harness especially #2 was a *****. Having 2 people would be helpful as Art had mentioned, to pull the harness up and hold it while you try to plug in the DINAN harness. The instructions from DINAN were sparse but was enough get you through the install. I found that if you can cup your hand (facing upwards) you can barely reach the clip release from #2 then take a flat head screwdriver and pop it off through the top of the hole. Here are photos of where harness 3 and 4 are to compliment the Dinan instructions. Also in step 4 of the instructions, the photo shows the airbox and intake ducts still on -- At this point, it should be off. Also, remember when you go to unplug 1 and 2, label them, or set them far enough apart, so you don't confuse it later when you go to plug it into the DINAN harness. I mixed them up, but think I got it right (50/50 chance, no CEL light and runs so I guess I got it right lol) -- Dinan instructions read you should get 5-6" of movement from the harness to access the sensors, I was only able to get about 1". Cutting the plastic ties is not necessary as OP asked.. Overall I'm very satisfied with the results. The car pulls significantly harder now and from a rolling 10mph start in Sport+, the wheels break loose a little. Probably will go get it dyno'd soon. Glad I went with the DINAN piggyback, as this is my daily and I can't afford to ship my ECU out to have it tuned and untuned when I return the car after the lease is over. It's plenty of power for a daily for anyone considering this tune, I would recommend it. And nice thing is you can uninstall it and sell later on if need be. Also, I'm left with one black screw, 2 go to the coolant tank, where's the last one go? And where did you guys mount the ECU?
So I found a dealer in Vancouver that ordered me one from Dinan. How long did it take you to install this?
So I found a dealer in Vancouver that ordered me one from Dinan. How long did it take you to install this?
Nice, about 3 hours -- It was my first time. Make sure you have some Torx drivers/bits (I think 17 and 25). Having a person to help is helpful but not necessary, good luck!
Question on the Dinan piggyback.. Lets say I get it installed by a dinan authorized dealer but then I want to go back to stock for the winter or for any visit to the dealer, is that possible? If so, is it only a simple step required because I cannot be installing/uninstalling the entire thing by myself and nor would i want to pay someone to do that each time. Thanks.
Question on the Dinan piggyback.. Lets say I get it installed by a dinan authorized dealer but then I want to go back to stock for the winter or for any visit to the dealer, is that possible? If so, is it only a simple step required because I cannot be installing/uninstalling the entire thing by myself and nor would i want to pay someone to do that each time. Thanks.
This is one of the main reasons I went with the RENNTECH , can load and unload the tune by just plugging the dongle into the odb port
This is one of the main reasons I went with the RENNTECH , can load and unload the tune by just plugging the dongle into the odb port
:-)
But thats a tune whereas Dinan is just a piggyback. From my understanding if you tune your ECU, the dealer can and will find out even if you back to stock prior. However, with a piggyback it seems that there shouldnt be a concern on that front since the piggyback is just 'fooling' the ECU which never really goes above stock boost etc on paper at least so the dealer wouldnt know.
I wonder if that is true or just my misunderstanding.
But thats a tune whereas Dinan is just a piggyback. From my understanding if you tune your ECU, the dealer can and will find out even if you back to stock prior. However, with a piggyback it seems that there shouldnt be a concern on that front since the piggyback is just 'fooling' the ECU which never really goes above stock boost etc on paper at least so the dealer wouldnt know.
I wonder if that is true or just my misunderstanding.
Well they ony will tell if they GO real deep, and if you are flashing it alot... if you are NOT flashing it over and over again, then the counts are low, and more so, would have to be a reason for them to dig deep. (which I believe can only be done at AMG or the like) as I dont think dealerships have the tools to do that type of investigation local. <- I could be wrong on this point
With a piggy back, you would have to uninstall the harness etc, as if a tech looks under the hood they will see it. (because its installed) now some companies have ones that you can put a cap on, and remove the box, and this works if the tech has no reason to look for somethings else.
Well they ony will tell if they GO real deep, and if you are flashing it alot... if you are NOT flashing it over and over again, then the counts are low, and more so, would have to be a reason for them to dig deep. (which I believe can only be done at AMG or the like) as I dont think dealerships have the tools to do that type of investigation local. <- I could be wrong on this point
With a piggy back, you would have to uninstall the harness etc, as if a tech looks under the hood they will see it. (because its installed) now some companies have ones that you can put a cap on, and remove the box, and this works if the tech has no reason to look for somethings else.
Yeah removing and installing the harness just seems like a PITA. OBD tunes are prob the easiest but i just cant get myself to go that route since i believe anything goes wrong with the car and the dealer will blame the tune. My exhaust valves were malfunctioning and the dealer refused to fix them because they blamed the sec cat delete.. i mean how ridiculous is that and these are AMG performance centres that im going to.
I guess im just gonna end up staying stock as far as power is concerned sigh
Yeah removing and installing the harness just seems like a PITA. OBD tunes are prob the easiest but i just cant get myself to go that route since i believe anything goes wrong with the car and the dealer will blame the tune. My exhaust valves were malfunctioning and the dealer refused to fix them because they blamed the sec cat delete.. i mean how ridiculous is that and these are AMG performance centres that im going to.
I guess im just gonna end up staying stock as far as power is concerned sigh
It sucks that you have that bad of a dealership... The local dealer ships dont look at ECU flash data unless there is an overwhelming issue..(someone on here had turbo's go out) and they were concerned they would look at that, and they didnt.
My dealer knows I have the exhaust swaped (from the DP's back) and they dont give a crap.) and I have heard of some dealerships being dicks about it.
I LOVE my renntech tune.. it made the car even that much more !
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