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Hondata 04-06 TSX ECU Reflash

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Hondata 04-06 TSX ECU Reflash

★★★★★ ★★★★★ 6 Reviews
$290.00 & Free Shipping

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Because of the ongoing situation with COVID-19 Hondata is taking at least 2-3 weeks to process ECU's.

Monday-Friday: 9am-4pm MST


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.

WARNING: This product may contain chemicals known to the State of California to cause cancer or birth defects.


Brand: Hondata
Part Number: K24A2
CARB Approved: Yes

Vehicle Fitment

Acura TSX
2004 Acura TSX All 2005 Acura TSX All 2006 Acura TSX All

6 Reviews ★★★★★ ★★★★★

★★★★★ ★★★★★
5.00/5.00 Stars out of 6 Reviews
Write a Review
5 Most Recent Read All 6 Reviews
ming | December 12th, 2019
Anyone still thinking about the reflash, don't wait the reflash completely change the way the car run. Throttle response is more aggressive, I got a 06+ intake mani with CT icebox, thermal mani gasket, and a fastline test pipe. The car pulls alot harder then before between 2000-7000 rpm is a whole complete different car.
Great bang for the buck mod!
Jake | June 18th, 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.
Definitley worth while
RSS06TSXAuto | October 31st, 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.
Danny (rsxd23) | October 2nd, 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.
06 TSX with reflash
Delwayane Ferraro | February 17th, 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
Read All 6 Reviews