Originally Posted by JEB1
Question for you, Stang. I had an Audi some years back that I had tuned with great results. But I was concerned with warranty issues so I bought a new ECU, had it tuned, and kept my stock ECU in reserve. Whenever I went to the dealer for warranty work, I put the old ECU back in. Do you by chance know what a new ECU costs, and does the act of pulling the ECU leave a trail of fault codes that sort of defeats the purpose?
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As for warranty issues, the dealer software, wiTech, is not capable of accessing or extracting tables that were changed for tuning in the ECU. The only way the dealer will know if something has changed is if they're watching engine parameters for a running condition. I brought mine in for service, they claimed that they reprogrammed the engine ecu, air suspension ecu, but really never did because it was still tuned and still lowered. No one mentioned anything.
So, the answer to your question about swapping ECU's. I am answering this based on my current knowledge on this ECU. We would have to purchase a new ecu, approx $600. You send me your ECU, I transfer the file and install the tune. Then transfer this file to the NEW ecu.
** I have to make sure that all tables will be able to be transferred. I will get back to you today or early tomorrow on this. Yes, the act of pulling the ecu does leave a trail. It leaves a "Loss of communication with BCM and low voltage to ECU". When vehicles have dead batteries, these codes also can appear. At our shop, we overlook these majority of the time because its 1 in 1,000 that the ecu has an actual loss of communication. Long story short, I don't think this will cause a red flag.
Originally Posted by Codyturgeon
I put the bluespark on before my still evolving learning curve on the DPF & EGR delete benefits, go figure. Tuning diesels is all new to me. 1400 miles stock and 600 with the bluespark. It helps for now But I now want the full deletes so it will have to go. I'm planning on going your route if you are willing to tune my ecu and give me a little help haha. I have googled its location but haven't found a straight forward answer yet. I looked under the driver side dash and see some parts that could be it but I'm uncertain. Where is it exactly? Is it also referred to as the PCM? Can I just buy a new ecu from somewhere and send that back and forth to you for tuning. If so do you know where at, it's hard to find any info at all on this as they are so new. I need my truck as it's a daily driver so swapping between the ECU's would be best for me. Also I wouldn't be hollowing out my exhaust until this winter when the farm slows down. Sorry for all the noob questions I just can't seem to find any info anywhere
Don't be sorry! It's a learning curve. You'll quickly catch on. I will give you as much help as you need and I can offer. We have enough knowledge on this ECU to answer most questions.
ECU Location : Right front of engine compartment. If you open the hood, when looking at engine, it's on the left. Mounted vertically.
Removal - Fairly simple
1. remove 2 ecu connectors from ecu.
2. One 8 mm bolt on the bottom of the ecu, 2 on top.
3. Lift out of vehicle.
Any other questions?