Hondata releases the K20A3-Si Civic flash upgrade

Here is the link to the release page. More information will be added to this page and other pages will be added over the next few hours.

http://www.hondata.com/k20a3civicsirelease.html


Also released today is a K20A2 flash upgrade for the Civic Si ECU. This is specifically if you are doing an K20A or K20A2 engine swap. This upgrade will reflash your Civic Si ECU with the Hondata K20A or K20A2 programs. Instead of putting your money towards a replacement ECU, it could be put towards a Hondata ECU upgrade instead.


ECU removal instructions will be posted soon. (It is located behind the glove compartment)



http://www.hondata.com/images/k30a3c...tockvstune.gif

WOW! A 10 horsepower (plus or minus a little) increase! VERY IMPRESSIVE!!! Great job guys!!:D :cool:

EDIT:From HONDATA.com:

*10-12 Peak HP gain depending on the dyno and modifications
* 4-9 ft lb torque across the rev range
* Power peak raised 400 rpm from 6300 rpm to 6700 rpm (higher with headers)
* Rev limiter raised to 7700 rpm.
* Fully dealer compatible - works with all Honda scan tools and equipment.
* 0-60 mph times improved by 1 second.

SWEET!!!!

0-60times reduced by a second???Shit!!!! That's very impressive...

improvement over stock on dyno.

I guess we'll learn later why with CAI and header, the dyno showed no improvements but manage to get 1s. less 0-60.

Shit even better....compare our dyno charts to the Base RSX's!!!


HEHEHE

:D

If you're interested, email me:
ForwardThrust@Hotmail.com

Price is $595 and includes overnight shipping to and from Hondata.

I'll need to know the following information:
Name
Address
City, State, Zip
Email Address
Phone number

ECM (ECU) Serial number
Desired Rev Limit
Air Intake - Stock, CAI, etc. If modified, manufacturer.
Exhaust - Stock, Aftermarket, etc. If modified, manufacturer.
Cams - Stock, Aftermarket, etc. If modified, manufacturer.
Do you have a Hondata Heatshield Gasket?

After receiving the information, and making payment arrangements, I'll send you a box to ship your ECM, immobilizer, and key to Hondata in. Also included will be two prepaid overnight shiiping slips, along with an information form that MUST be signed by you, and more detailed instructions.

I'll be sending my ECM in Monday, 1/20/03, and will post about the experience.
:D

Nice gain in power.

Quote:

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Originally posted by hamproof
improvement over stock on dyno.

I guess we'll learn later why with CAI and header, the dyno showed no improvements but manage to get 1s. less 0-60.

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It's the extra 900 RPM per gear that we now have to play with that's responsible for the faster 0-60 time(no need to shift to 3rd which can take more than .5 seconds).

hamproof,

Doug will obviously cover more later, but it appears that the interaction of the header and intake causes some low rpm losses. Either that, or An's car simply wasn't as strong on the bottom end as Rick's. Note that even when Rick's car was stock, it made as much or more torque than An's on the bottom end.

The headers do appear to help sustain power on the top end as the curve doesn't roll off as fast. IMO, the reason there was such a big improvement in 0-60 times is as follows:

1. No need to shift to 3rd gear to get to 60 - that's worth 0.3-0.5 seconds depending on the driver.

2. Look at the average power. If you shift at 6900 rpm in 1st gear, what rpm do you drop down to? What is the power there. Now shift at 7700 rpm and see where you drop down to. What is the power there? By my calculations using An's graph the average hp for the stock ECU car is 129.7 hp in 2nd gear (assuming a first gear shift at redline) while the avg hp for the flashed car is 139.4 hp. That's an average gain of 7%, which is pretty substantial and accounts for the rest of the acceleration improvements

3. The extra torque on the bottom end, smoothing out the curve, makes the car a bit easier to launch as well.

SC

Quote:

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Also released today is a K20A2 flash upgrade for the Civic Si ECU. This is specifically if you are doing an K20A or K20A2 engine swap. This upgrade will reflash your Civic Si ECU with the Hondata K20A or K20A2 programs. Instead of putting your money towards a replacement ECU, it could be put towards a Hondata ECU upgrade instead.

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Just as I suspected, so our ECU can be programed to control
K20A2 VTEC.

I expected better gains with the CAI and headers, I am making more torque and hp than that now. hmmm.:confused:

So...this basically means that I/H with Hondata ECU has no gains. That sucks I think.

Considering the difference in results between the two cars, I'm anxious to get my car done, and dyno'd, since I have measurements for stock, CAI, and the heatshield gasket.
I agree just raising the rev limit accounts for most of the 0-60 improvement.

Quote:

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Originally posted by myeverlovinsir
I expected better gains with the CAI and headers, I am making more torque and hp than that now. hmmm.:confused:

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Do you have your dyno slip?

Quote:

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Originally posted by OldSIMan
Considering the difference in results between the two cars, I'm anxious to get my car done, and dyno'd, since I have measurements for stock, CAI, and the heatshield gasket.
I agree just raising the rev limit accounts for most of the 0-60 improvement.

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Good let us know.