You guys need to check this out
02-10-2009, 03:00 PM
#28
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2007 E63 w/P30 and Eurotech CF Diffuser
3) The idea that the TCU can be flashed through the ECU on new cars is not too far fetched. I recall one of the technicians that was working on my car told me that when Mercedes released a new TCU update, we (the dealer) flash it through the ECU. This means they do NOT take the TCU out for a complete flash. However, I've yet to confirm this, and will try to get a definite answer in the next couple of days.
As a result of the same experience, I found that the TCU datalogs at least temperature, and accepts programming about 3 times faster than the ECU.
I was also told that the TCU would adapt from where it was to where it needs to be in about 1 lap of Laguna Seca.
02-10-2009, 04:38 PM
#30
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2001 clk55 AMG
Here's another thing I've experienced with MHP and I don't hear people talking about. andy say's his price is so high because of the massive amount of time it takes to tune an ECU TCU 40hours+ if that were true how could he receive the ECU TCU on Tuesday and ship it out Wednesday
02-10-2009, 06:10 PM
#31
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2005 E55 ///AMG
Here's another thing I've experienced with MHP and I don't hear people talking about. andy say's his price is so high because of the massive amount of time it takes to tune an ECU TCU 40hours+ if that were true how could he receive the ECU TCU on Tuesday and ship it out Wednesday
02-10-2009, 06:28 PM
#32
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E63 P30, CL500 Sport
Whether or not "through the ECU" or not, I can 100% confirm that the TCU can be programmed through the same port under the dash that is used to program the ECU.
As a result of the same experience, I found that the TCU datalogs at least temperature, and accepts programming about 3 times faster than the ECU.
I was also told that the TCU would adapt from where it was to where it needs to be in about 1 lap of Laguna Seca.
As a result of the same experience, I found that the TCU datalogs at least temperature, and accepts programming about 3 times faster than the ECU.
I was also told that the TCU would adapt from where it was to where it needs to be in about 1 lap of Laguna Seca.
I may have mis-understood the technician then. He told me that they can flash the TCU without removing the TCU (or anything eles) out of the car, and I was under the impression that anything connected to the OBDII port goes through the ECU first. I will try to go to the dealer and actually watch him re-flash my TCU and see if it's through the ECU itself or not hopefully in the next few days 
By the way, are you sure that the necessary adaptations are usually complete after 1 lap only?
02-10-2009, 07:52 PM
#34
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E63 P30, CL500 Sport
I wish we could get some kind of clarification from the MHP team at least on what's going on.....
02-11-2009, 09:54 PM
#35
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2005 E55 ///AMG
I just don't think he wanted to admit this as his custom tuning is a nice sales pitch.
