View Full Version : MTM TCU self install
marklar182
October 27th, 2010, 00:56
First of all if you thinking about installing the chip yourself I recommend not doing so unless you have the cash in hand to replace the potentially fried TCU.
I choose to install myself since my occupation is electronics driven (not much SMD components though).
Removed the TCU and popped it open...WTF?
http://img263.imageshack.us/img263/2186/photoshz.jpg
Removed and soldered in the MTM. (GIAC is not in my vocab)
http://img146.imageshack.us/img146/6235/photo1hp.jpg
(MTM sticker removed for "OEM" appearance)
Now comes the Oh S*** moment; reinstalled the TCU, turned the key to run and "Press Clutch Pedal to Start Engine" is shown on the DIS. F***.
Scan with Vag-com, no TCU communication.
Pulled out TCU again, Ran the soldering iron over the pins again, and checked continuity between the pads and the pins on the chip; all good.
Reinstalled and tried again.....SUCCESS! RELIEF!
Replaced all the vacuum lines under the Intake and called it a night.
JSRS6
October 27th, 2010, 01:08
So that's all we have to do after the manual conversion is short out the tcu...vedddyy eeenteresting...
Aronis
October 27th, 2010, 01:43
How's it drive?
Why not just plug into the socket which was already there for the GIAC chip??
V8weight
October 27th, 2010, 01:51
How's it drive?
Why not just plug into the socket which was already there for the GIAC chip??
That's what I was thinking, is that not a chip socket? Why de-solder it? Yep, you can remove the tcu all together, and the car will display the "press clutch to start" message, and I believe it will start and run as well.
marklar182
October 27th, 2010, 02:07
Why not just plug into the socket which was already there for the GIAC chip??
That was my first thought, however, GIAC is encrypted and has a decoder chip on the bottom of the "socket"
I had no idea there was a tip chip installed already. MTM is much more sporty.
DHall1
October 27th, 2010, 02:30
So in your opinion the MTM TCU chip feels better than having the GIAC installed?
That was my first thought, however, GIAC is encrypted and has a decoder chip on the bottom of the "socket"
I had no idea there was a tip chip installed already. MTM is much more sporty.
marklar182
October 27th, 2010, 02:32
Give me a day or two and I will give you a definitive answer :)
DHall1
October 27th, 2010, 02:34
Did you update the Vag yet?
marklar182
October 27th, 2010, 02:37
New HEX-CAN cable on the way!
marklar182
October 27th, 2010, 17:24
Wow, after a nice cruise this morning I can tell many differences between GIAC and MTM.
- GIAC feels like they just altered the stock programming a bit (hold gears longer, ect), MTM feels like a complete remap.
- In Tip mode GIAC will still downshift automatically if you mash the gas, MTM holds the current gear (better IMO).
- GIAC would downshift hard into 1st when coming to a stop, MTM is smooth as silk.
Overall power delivery is noticeably linear with MTM.
DHall1
October 27th, 2010, 17:46
I held this theory in the past. Its nice to see a real world example of the difference.
Wow, after a nice cruise this morning I can tell many differences between GIAC and MTM.
- GIAC feels like they just altered the stock programming a bit (hold gears longer, ect), MTM feels like a complete remap.
- In Tip mode GIAC will still downshift automatically if you mash the gas, MTM holds the current gear (better IMO).
- GIAC would downshift hard into 1st when coming to a stop, MTM is smooth as silk.
Overall power delivery is noticeably linear with MTM.
Aronis
October 28th, 2010, 03:55
um...could you copy that chip if you had an eprom progamer??
viperbl
October 28th, 2010, 08:27
um...could you copy that chip if you had an eprom progamer??
Assuming you want to use it another car, why not just pay the people who spent coutless hours making these modified chips instead?
cmore
October 30th, 2010, 17:38
@marklar182 Was the time that the transmission takes to shift after click a paddle or pushing the shifter any quicker than the GIAC?
Where in the US can I have an MTM chip purchased and installed?
marklar182
October 30th, 2010, 17:45
@marklar182 Was the time that the transmission takes to shift after click a paddle or pushing the shifter any quicker than the GIAC?
Where in the US can I have an MTM chip purchased and installed?
I did not see a big change in the shifting time using the paddles GIAC vs MTM. Both are pretty quick.
http://www.hoppenmotorsport.com/audi_rs6_c5_tuning.htm is the place to purchase/install the MTM chip. You overnight your TCU along with the last six digits of your VIN and they install the chip and overnight the TCU back to you!
cmore
October 30th, 2010, 17:58
If you could guess, how long does the car take to shift after clicking the paddle? I supposedly have the O.CT TCU and it still takes almost a second to shift when I click the paddle. I have just assumed that it is just hydraulic slowness in the transmission and nothing software can make quicker.
I did not see a big change in the shifting time using the paddles GIAC vs MTM. Both are pretty quick.
http://www.hoppenmotorsport.com/audi_rs6_c5_tuning.htm is the place to purchase/install the MTM chip. You overnight your TCU along with the last six digits of your VIN and they install the chip and overnight the TCU back to you!
SzymekCRX
November 29th, 2011, 18:38
Shazaam ! Hoppen CHIP
Soldering finished, TCU installed, test-drive (one meter on D, one meter on R) in my garage done !
The proper testdrive in two days time :)
11996
lswing
November 29th, 2011, 19:19
First of all if you thinking about installing the chip yourself I recommend not doing so unless you have the cash in hand to replace the potentially fried TCU.
Yep, that cost me $700 bucks...I would highly recommend you let Hoppen solder for $40. I do see some great soldering skill out there though! Chip is great, tighter shifts, holds the rpm's longer per gear, doesn't jump around in Drive nearly as much, a rocket in Sport, twice as quick on the paddles, best $$ spent so far...