Hondata K-Pro DUAL, Acura TSX 04-06 K24 with DBW ECU 5AT & 6MT

It consists of three parts:

• A K-Pro installed into a Hondata or user suppliedcompatible ECU
• The dual adapter harness
• Reflashing your stock ECU

Applications

• 2004-2006 K24 US market Acura TSX Manual with  ECU part # 37820-RBB-(A02-A05)
• 2004-2006 K24 US market Acura TSX Auto with  ECU part # 37820-RBB-(A54-A61)

Pricing

For customers that already have a Hondata reflash, there is a $100 discount.

* These prices include the Dual adapter harness, reflashing the stock ECU, and modifying the circuitry of both ECUs to work together.

Are there any other costs?

Yes. The K-Pro requires an Air-Fuel ratio sensor from a US 2004-2005 D17 Civic(Part # 36531-PLR-003) as the stock sensor is incompatible. This is a plug in replacement for the front air fuel ratio sensor. You purchase this from your Honda dealer.

Features

Main features:

• Factory reliability for your TSX.
• Easy starting.
• Dash water temperature display functions normally.
• All the features of the K-Pro:
• Injector re-calibration.
• Fully mapped boost tables.
• Nitrous control.
• Datalogging.
• Boost control.
• And more...

See the K-Pro page for more information.

Operating notes

The K-Pro dual was designed to operate your car as safely as possible. In order to do this, we switch off systems in the stock ECU that the K-Pro takes control over. This enables the stock ECU to run without any error codes. No error codes means the VSA (vehicle stability assist) works as intended.

As there is no communication between the stock ECU and K-Pro, the status of the cruise control and air-conditioning, under control of the stock ECU, is not conveyed to the K-Pro.

We were unable to get the cruise control functioning safely, so cruise control is permanently switched off in the stock ECU.

With air conditioning in operation the idle speed may briefly change by 100 RPM when the compressor is engaged or disengaged.

Should the K-Pro need repair or maintenance, the stock ECU can still operate the car by itself if the adapter harness is removed and you have stock injectors. The rev limit is lower (6000 rpm) and VTEC disabled. 

K-Pro Dual compatible  ECUs

Used ECUs for the K-Pro Dual  may be sourced from the following vehicles

• 2002-2004 RSX Base 5 speed (PND -A0# ECU)
• 2002-2004 RSX Type S 6 speed (PRB A03-A08, PRB-305 ECU)
• 2002-2005 Civic Si (PNF ECU)

These two ECUs have fewer emissions controls & nitrous outputs (2 instead of 4)

• 2001-2005 Japanese DC5 Integra Type R (PRC ECU)
• 2003-2005 Japanese Civic Type R (PRD ECU)

Can I send a used K-Pro

Yes. Any 02-04 K-Pro is suitable for K-Pro dual ECU operation providing the unit works perfectly.   (After conversion to dual ECU operation the K-Pro cannot be converted back for single ECU operation.)

How do I purchase this?

Fill out this form and send with your stock ECU and a donor ECU from the list above (if not purchasing a new ECU) to Hondata.

What do I need to send?

Send the stock ECU with a matched key and immobilizer and a donor ECU from the list above (if not purchasing a new ECU)

How do I remove my ECU and immobilizer?

The ECU is located behind plastic panels to the right of the driver's right foot and the left of the passenger's left foot. Both panels will need to be removed. You will need a Philips screwdriver and 10mm socket. Complete removal instructions are to be found on this page. Alternatively you may download and print out the TSX ECU removal pdf file(300k).

What gains can I expect?

The stock TSX ECU limits the cam advance to 20 degrees. (even though the mechanism is capable of 25 degrees) By machining the VTC mechanism to allow 45 degrees of advance and using the K-Pro you can pick up torque throughout the rev range, especially if you have an intake and headers.

The following graph is a test of a stock ECU followed a few minutes later by a tuned K-Pro in an internally stock 2004 TSX. For both tests the TSX is equipped with a 45 degree VTC mechanism and identical bolt-ons:

• Injen intake
• Hytech headers,
• High flow cat,
• Hytech exhaust

• Green line is K-Pro tuned with the dual adapter harness (3600 rpm vtec point)
• Pink line is stock ECU
  
  

Check here for more tuning information.

If I sell the car or K-Pro, how do I return the ECU to stock?

Send the stock ECU + cashier's check for $100 to Hondata. This covers the cost of reflashing the ECU back to stock and return freight for the continental USA.

What about the 07 and 08 TSX?

Hondata cannot program the 07 and 08 Acura TSX ECUs. It is possible that an 04-06 ECU might work in an 07-08 TSX, but this has not been tested.

Notes

OBDII Scan tools.  OBDII and Honda factory scan tools connect to the stock ECU. They will not register the status of systems like VTEC and the oxygen sensor as they are switched off. This must be accessed through the K-Pro datalogging. Note that the K-Pro is not smog legal, and for off road use only.

User Supplied ECUs. User supplied ECUs must be checked before sending to Hondata. Any damaged or faulty ECUs will incur a processing cost.

ECU Mounting. The dual adapter harness is designed to allow the stock ECU to remain in the factory position and the harness then can be run under the carpet along center tunnel and the K-Pro ECU placed under orbehind the passenger's seat. Picture showingECU in footwell.