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Hondata 05-06 RSX Type S ECU Reflash

Hondata 05-06 RSX Type S ECU Reflash-A1
Hondata 05-06 RSX Type S ECU Reflash-A2
Hondata 05-06 RSX Type S ECU Reflash-A3
Images may be for reference only

Hondata 05-06 RSX Type S ECU Reflash

Part Number: K20Z1-05

5 out of 55 out of 55 out of 55 out of 55 out of 5 25 customer reviews
$290.00 & Free Shipping

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The K20Z1 program advances the ignition, alters the cam timing and optimizes the fuel for better driving and advanced performance

**This reflash is not suitable with stock air box, race header, anything other than stock cams, force induction or nitrous.


  • VTEC window from 4900 to 5800 rpm
  • 8600 rpm Rev limit, increased from 8300 rpm
  • Maximum torque gain 12 ft/lbs torque at 6000 rpm
  • Maximum power gain 20 hp at 8000 rpm
  • Peak torque increases by 6 ft-lbs
  • Peak power increases by 8 hp
  • Very wide flat smooth torque curve. 90% of peak torque available from 2200-8000 rpm.
  • Fully dealer compatible - works with all Honda scan tools and equipment
  • This program works very well with cold air intakes and cat-back exhausts. 
  • If you have a race header then you need to use K-pro.
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: K20Z1-05
CARB Approved: No

Vehicle Fitment

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

4.8 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

3.0 out of 5.0 3 out of 53 out of 53 out of 53 out of 53 out of 5

All in all, okay

By Kazumi Nomura on 6/30/2012

This product is okay. It gives moderate gains. Engine sounds a little different, sounds a little deeper. It does make your car and acceleration smoother. I like the product, it's a nice gain, improvement. You really have to look for the difference, it's not easily apparant, noticable. Hopefully should be nice with some other improvements I plan to do.

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

Reflash fun

By Dave on 4/22/2012

2006 Type-S. Injen Ram air, Borla exhaust, and now the relash. Holy smokes. What a difference. Must have if you have no plans to turbo or supercharge. No need for me with these mods.

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

Dee Shyytt

By Bthet on 4/17/2012

I have an 06 with i/h/e and i know raceheaders are not recommended but ohhh welll :). Big difference in everyday driving which makes it more enjoyable and power gains are noticeable. Good upgrade for the price. Shipped it out monday afternoon got it back wednesday. Cant complain.

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

Feels like it grew to a 2.2L

By IronGumby on 3/25/2012

I cannot be happier with this mod!! It feels primed and ready for action at all times now. The new-found torque down low makes you wonder how you ever drove it before; it's hard to make it bog. VTEC now is enjoyed from 4900 on up and just really shines and makes one proud to have a K-motor. You can feel it surge a second time as you surpass 7000rpm, too! The higher revs are foreign to the ear and I feel like it finally broke my motor in. This is all with only the Icebox intake so I can only wonder what adding the CRSX header will do!

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

Totally Worth It

By Daniel Koffer on 2/13/2012

I got the reflash a few months ago because I didn't, and still dont plan to do anymore then basic bolt-ons. I already had a cai, and with the reflash, it is a night and day difference over stock. Worth every penny.

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