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Hondata 04-06 TSX ECU Reflash

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Hondata 04-06 TSX ECU Reflash

Part Number: K24A2

5 out of 55 out of 55 out of 55 out of 55 out of 5 5 customer reviews
$290.00 & Free Shipping

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The 2004-2006 Acura TSX reflash advances the ignition, alters the cam timing and optimizes the fuel for better driving and advanced performance. It adds up to 29hp and up to 26 ft/lbs fo torque.


  • 5000 rpm VTEC point decreased from 6000 rpm
  • 7600 rpm Rev limit, increased from 7300 rpm (for auto trans must be in sportshift mode)
  • Maximum torque gain 26 ft/lbs torque at 6000 rpm
  • Maximum power gain 29 hp at 6000 rpm
  • Peak torque increases from 169ft/lbs at 4500 rpm to 175 ft pounds at 7500 rpm
  • Peak power increases from 206 hp at 7100 rpm to 210 at 6800 rpm
  • Very wide flat smooth torque curve. 90% of peak torque available from 2000-7000 rpm
  • Fully dealer compatible - works with all Honda scan tools and equipment
  • The Hondata TSX reflash is designed for use with an intake and headers


Any K24A2 TSX Manual transmission owner with the ECU part numbers:
  • RBB-A02 - 04 TSX
  • RBB-A03 - 05 TSX
Any K24A2 TSX Auto transmission owner with the ECU part numbers :
  • RBB-A54 - 04 TSX
  • RBB-A55 - 05 TSX
After you order you will receive two emails; one with full instructions on where and how to send your ECU to Hondata and another with the form that you need to sign and include with your ECU.

You are required to send your ECU to Hondata for this service. This product is final sale.


Brand: Hondata
Part Number: K24A2
CARB Approved: Yes

5 Reviews 5 out of 55 out of 55 out of 55 out of 55 out of 5

5.0 out of 5.0 5 out of 55 out of 55 out of 55 out of 55 out of 5

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Most Recent

5.0 out of 5.0 5 out of 55 out of 55 out of 55 out of 55 out of 5

Great bang for the buck mod!

By Jake on 6/18/2012

Great value for the cost to benefit ratio. Doesn't add a huge amount of peak power BUT makes the car much more enjoyable all around..and definitely more eager to rip through 1st to 3rd - redlining them all of course! And I could be crazy but my mileage seems better but def as good as before but with the car being much quicker. My car is stock otherwise..looking to add an intake next which should further enhance the Reflash and the cars performance.

5.0 out of 5.0 5 out of 55 out of 55 out of 55 out of 55 out of 5

Definitley worth while

By RSS06TSXAuto on 10/31/2011

Besides road noise, one thing that has always annoyed me about the TSX Auto, is the transmission always seems to stay in too high of a gear, and the engine just didn't do much until it hit 6000 rpm. This fixed that by providing more power sooner, as well as I notice a 3% improvement in fuel economy. Passing without needing to use the sport shift mode can be done with more confidence. Note that below 4400rpm the car seems the same. Turnaround is very quick, and Club RSX handled the order and questions with no nonsense.

5.0 out of 5.0 5 out of 55 out of 55 out of 55 out of 55 out of 5


By Danny (rsxd23) on 10/2/2009

**10/2/2009** I have had the reflash on now for a month and I love the power& the way the car picks up speed much faster then before. When in the high RPMS you can just keep pushing it and it keeps going it really feels like a different car. The gas millage has not changed it has stayed the same or a little better. I have Injen CAI, Comptech header, and Tanabe SHM exhaust and it really woke the car up even more with he reflash. The extra torque really helps on hills on my way to work no more need to downshift. Overall great upgrade for this car and worth every penny.

5.0 out of 5.0 5 out of 55 out of 55 out of 55 out of 55 out of 5

06 TSX with reflash

By Delwayane Ferraro on 2/17/2009

All I can say is wow! My god! I have an 06 TSX with CAI system DC 421 headers, NGK spark plugs and a hondata heat shield. I just got my car back from my boys shop. I took it for a test drive and coming out of first gear the the car through my head back. Its like a totally different car. Is getting this reflash the best bang for your buck? yes it is. I think anybody with a TSX should get it done if you want some serious power. The thing is I'm not done with my car. I still have to put in my exhaust system. I wait to see what that does for me

5.0 out of 5.0 5 out of 55 out of 55 out of 55 out of 55 out of 5

Worth the Money!!!

By aaron knight on 11/10/2008

Excellent ECU upgrade, especially since TSX has no tuneable ECU options. Great power under the curve, clears up alot of the notchiness of the TSX ECU from Honda. Worth buying if you plan to keep your car a little while. Best bang for the buck HP upgrade out for the TSX.

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