Hello all members..im new to the forums
I got a question..Does anyone here have a Renntech Ecu Chip for sale for my E55? it is an 2005

 

You can't re-use an ECU tune on a different car. Each ECU must be vin-coded and initialized before a flash. This means you'll need $3500 if you really want the RennTech tune. You may want to check out the following companies as well:

- Kleemann
- MHP (offers TCU tuning as well)
- MKB
- Evosport (They use Powerchip)
- Brabus
- LET (probably best value)

 

well yah bro
the price doesnt matter for me because i have about 10k ready to go for only upgrades
but what do u prefer should i flash it (will it help?)
because i want to get the car up to 650hp an stop

 

you absolutely CAN re-use an ECU on a different car. ECU does have to be vin-coded but a person with the right knowledge and tools can do it. I had it done......ran me 250$ for work and 250$ for a spare ECU from a junkyard.

The ECU must be either the same part number or a "replacement" part number which can be found in EPC.

 

I know the ECU itself can be re-used, but it'd have to be re-vin coded. The question is when you re-vin code the ECU, do you lose the tune?

 

You will not lose anything . . .
Thing is from what I read here is that not many people can do this, therfore making the whole process fairly inconvenient. Considering what LET tunes run, it may not be financially advantageous to transfer ECUs between cars.

My cost on the latest part # E55 ECU was about 1560$ from Mercedes with a 7 day lead time.

 

To the OP....this upgrade is very much worth the money. Its the single best power mod you can do to the car. We did this to both our C32's and new C63's with incredible results. You wont be dissapointed. I wouldnt half step with the used ECU. Turn around time is quick and hassle free.

Myles

 

Not to add confusion, but there is no new ecu needed for the 55k. Flashing a 63 is a complete different story.
Technically, it is no more than a file. You need a tool to download from one car and upload to another (flashbooster). Simple as that. The code is NOT re-written for each client. To be clear, yes some manipulation is needed for the uploaded file to fully replace the OEM one, but again that is not anything that is proprietary to a tuner. This is why all the tuners are so paranoid of having their tunes seen by the competition.

 

Isnt it VIN coded? i thought you could not copy a tune from one car and flash another one with it of the same class, same engine etc.... It would work, no?

 

How do you think it is done now? yes, it needs to be coded, but the flash is just a copy. The tuners DO NOT take each and every file and make all of the parameter changes. It is like formatting a HD. You have to do that part and configure it to the car, but the flash you add can be generic. Again, not something anyone can do, but then again not anyone would have a flashbooster.

 

What I'm trying to get at is this: can an ECU tune still work after the ECU is re-initialized and re-vin coded to another car? For example, lets say someone has a tuned ECU of an E55. Can someone else with another E55 buy that ECU, then vin-coded to his/her vehicle, and still use that same tune or would that tune be lost?

 

OK Mo, I get your question and I do not know that answer. I have not played much with swapping ECUs in my car. I do know that a typical replacement ECU comes as a blank.

Now, what I am saying is an option is not to even swap your ECU out but to simply have the file downloaded from a tuned car and flashed onto an unflashed car. Legalities aside, this is a very easy task with minimal coding needed. Again, I am only speaking to the E55k. I do not know of any flashboosters that work with the 63 setups yet, other than the ones at MB.

If anyone has a spare E55k ECU and wants to experiment, I'm down....

 

Buy the tune from Renntech. If you have an issue with the tune they will take care of it. If there is an update to your tune they will do it free. Why would you want to by a scabbed tune anways?

 

yeah it will work. when you change the vin coding it has nothing to do with fuel and timing maps (tune).

once again the key is having a person with right skills/knowledge and right tools. i found a person here in PA that is absolutely ridiculous with ECUs and other euro car electronics. he had a renntech S65 at his shop that was amazing while my car was there.

 

The E55 tune is actually $2495 not $3495 like they are for the 63 AMG motors from RENNtech

Yes most tuners vin code the ECU files so that they can not be unloaded on to another vehicle, however I'm sure there are people out there that will crack the code buts whos codes are they cracking, and is it really worth it. Because the warranty will not be there if something happens to that ECU or motor because of that ECU file.

Since you've got the 10k budget, I would recommend purchasing a pulley, Kleemann Headers, 80MM or 82mm throttle body and a ECU tune, or a full RENNtech package 4

Let me know if you need any help.

James

 

82? 82 at the mouth or do you mean small area? That would help....

 

who sells an 82mm body?

 

I'm not sure, but I think there is an mAMG one that is an 82 at the mouth, but still the same at the hump. Maybe James has a legit 82mm or it really shouldn't be advertised as that...

 

82mm at the internals, benzgal has it on her E55, remember when the 80mm came out it was really the 78 like how RENNtech called it, however for what ever reason people still call it an 80mm

pm me for pricing

 

I do remember, just did not know that any of the MB units were 82mm internal. I knew the old Maybach was the biggest and it was a legit 80mm.

hmmmmmmm, I may have to look into this. I still want something closer to a 95mm but if this is actually 4mm larger than the VRP internals, then it is worth a look.