Acura TL Builder

What is it about the 2006 TL that makes it so odd? One thing I noticed is the Hondata adaptors don’t work for them, only 04-05 6MT models.

TheSauceBoss

If I recall correctly, the 2006 has a different ECU than the 04 and 05 in order to make a number of improvements, reducing torque steer was one of them.

Euro-R_Spec_TSX

The 04-05 ECU has a processor with 512KB of flash memory. The 06-08 ECU has a processor with 1MB flash memory.
For 07-08, the ECU has diagnostics over CAN. Earlier ECUs have diagnostics over K-Line (much slower). Moving to CAN
is a big change technology wise, so vehicle manufacturers like to wait for a model refresh to implement something like that.
Although the ECU upgrade was pretty substantial as well, so not sure why Honda decided to pull it ahead a year. From a
hardware perspective, the 06 ECU is the same as the 07-08 ECU and that's why it's possible to reflash the 07-08 program
onto the 06 ECU.

Reducing torque steer isn't possible in a 3rd gen TL by just an ECU upgrade. There are no sensors on the vehicle that
would make that possible.

horseshoez

iTrader: (2)

The upgraded 2006 6MT ECU was one of the reasons why I excluded my search for 2004 and 2005 models back when I was shopping.

Acura TL Builder

Does this mean Hondata Flashpro will work on the 2006 6MT like it does on the 2007-2008?

Because the Hondata units specifically state that its for “2007-2008” and “2007+”.

Euro-R_Spec_TSX

FlashPoo only supports diagnostics (and reflashing) over CAN, so natively it only works on 07-08 ECUs.
Since the vehicle wiring on a 06 TL is set up for diagnostics over K-Line, it won't have the CAN wires running
to the OBD2 port. You could run a 07-08 ECU in a 06 TL, but you wouldn't have the CAN wires running to
the OBD2 port unless you added them yourself. I think Hondata used to sell that harness by itself, but I
don't think they do anymore. Also, I'm not sure if FP has the option to force a reflash of the 06 ECU to
the 07-08 program, although technically it's possible.

Slpr04UA6

I’ve read here on Azine of many who have just used an ‘07-08 manual ecu in an ‘06, and was able to use flashpro. I don’t know everything involved, but hopefully justinspace can chime in (I believe he has done this, as others have).

Slpr04UA6

Found a thread on the swap. Yes there was some harness involved. Or re pinning of wires on an 06. A lot of info I’m not familiar with. But the link is below......


https://acurazine.com/forums/3g-tl-p...-885236/page2/

Acura TL Builder

With your understanding and technical data, Why the hell do you only have <350 posts on here? Please share more wth us, as we are hungrey to learn anything 3G related.

TheSauceBoss

So I looked a little further into this. According to the service manual, there are indeed steering angle sensors. And *apparently*, beginning in 2006 the ECU uses the data from these sensors under hard acceleration to reduce power/input when (and if) a certain steering angle is reached, due to torque steer moving the steering column.

Euro-R_Spec_TSX

LOL! I DO post a lot of good info!

Hmmm. Makes sense, but I wouldn't call that reducing torque steer. It reduces the torque input, so naturally it will reduce torque steer.
I think the Honda marketing dept is stretching on that one. The FK8 Civic Type-R has some fancy front suspension geometry to reduce torque steer. That seems like the best way to do it.

Longtimelurker

It looks like you guys know about the ecu in the 06. Do you know if 06 AT can be used in place of the 06 MT? There are a few differences based on the diagram, like clutch interlock, but mostly looks the same. Will I get a CEL of i put a AT ecu in a MT and can HDS fix this or is the difference hardware?

horseshoez

iTrader: (2)

I'm like 99% sure the two are not interchangeable. Why? There have been numerous threads here regarding folks who want to swap a manual transmission into their automatic 3G TL, and in every case I can remember, the advice was the project absolutely, positively, needed an ECU and wiring harness from a 6MT model.

There is a chance I'm wrong about this as I've never looked into it myself, so if someone has better information here, feel free to correct me.

Longtimelurker

Thanks for confirming. I bought the MT ecu for twice the price. Just need this thing to run until the new car comes in. Fingers crossed.