KSROM Info

[mezje]

I looked at a Galant today that supposedly had a K's ROM in it. Apparently it boosts to 1.2 bar.

I didn't believe it as it was using the OEM boost solenoid but after doing some research (thanks wayback machine), I can see the Japanese were indeed tuning these things as early as 2004 on the factory ECU.

Just thought it was interesting and worth sharing. If you google KSROM without any Japanese terms there is stuff all results. This can act as a bit of a reference!

Snippets below from the 2004 web page. https://web.archive.org/web/20040707004215/http://www.ricv.zaq.ne.jp/ksrom/

Translated:

Additionally, below are some minkara reviews, you will need to translate but feedback is generally very positive and it seems even back in the 2000s they had after sales support and retuning options.

[三菱 レグナム]KSROM KS ROM

【パーツレビュー】三菱/レグナム装着 | 通勤車両なもんで、先送りしてもらいました。 さっそく付け替えてノーマルを送り返しましたが、とにかく近所が渋滞ばかりで、本格的なインプレが出来るほどブーストは掛けれていません。しかし、低速から走りが軽くなったのは体感でき ...

minkara.carview.co.jp

[三菱 レグナム]KSROM KS ROM

【パーツレビュー】三菱/レグナム装着 | 「ガソリン高騰の為に速さ・乗りやすさだけでなく、４０００ｒｐｍ以下は、※燃費向上（１０～１５％）データをセットしています」に釣られて購入しました。 現在の車の仕様上、安全マージンを考慮して最大ブーストを 1.1 にし ...

minkara.carview.co.jp

[三菱 レグナム]KSROM KS ROM

【パーツレビュー】三菱/レグナム装着 | 【総評】 専用パーツが少ない車でも手軽にパワーアップ出来る専用品だと一番効果があるのではないだろうか 【満足している点】 ブーストの立ち上がりも鋭くなり乗りやすく速くなった事 一番気にいってるのは値段ですが 【不満な ...

minkara.carview.co.jp

I can't confirm if below is a KSROM but I believe it is, apparently stock turbos with fairly standard mods, OG Kansai Service dyno.

レグナムＶＲ−４

 

[kc427]

Maybe the WGDC Map controlling OEM boost solenoid, so it can be upto 1.1-1.2 bar?

 

[mezje]

Maybe the WGDC Map controlling OEM boost solenoid, so it can be upto 1.1-1.2 bar?

View attachment 65861

I am unsure, I have never actually seen ECUFlash and EvoScan in person! I have only read some of the Merlin document.

I just found it impressive how early they (Japan) were working with the factory computer (and boost solenoid!)

 

[kc427]

I am unsure, I have never actually seen ECUFlash and EvoScan in person! I have only read some of the Merlin document.

I just found it impressive how early they (Japan) were working with the factory computer (and boost solenoid!)

Those Japanese company, eg, Mines, KSRom, HKS, etc, were working on factory computer long long time ago, and many of them using daughter-board with EPROM. Eg, in 90's the JDM Honda Civic SiR, aka EF9, using daughter-board in the ECU to tune the mapping. I guess the factory probably "agree" to give some mapping info as confidential info to the Japanese tuning company to have the ECU tuned, so that the car model could have more performance parts and more people would buy that car.

 

[mezje]

Those Japanese company, eg, Mines, KSRom, HKS, etc, were working on factory computer long long time ago, and many of them using daughter-board with EPROM. Eg, in 90's the JDM Honda Civic SiR, aka EF9, using daughter-board in the ECU to tune the mapping. I guess the factory probably "agree" to give some mapping info as confidential info to the Japanese tuning company to have the ECU tuned, so that the car model could have more performance parts and more people would buy that car.

I like that theory and agree with it. I wonder if a leak was the precursor to EvoScan and ECUFlash...

 

[BCX]

Maybe the WGDC Map controlling OEM boost solenoid, so it can be upto 1.1-1.2 bar?

View attachment 65861

BDEL will have more of an effect on boost than base wgdc maps. BDEL is the desired engine load to try and achieve vs RPM. The ecu then controls the wgdc to achieve the desired load using the base wgdc value as a start.

I like that theory and agree with it. I wonder if a leak was the precursor to EvoScan and ECUFlash...

For ecuflash, i believe Colby reverse engineered and wrote his own reflash routine by reverse engineering the way the MUT reflashes. Lots of history on openecu.org. The H8 datasheet even gives an example reflash routine.

For Evoscan, Hamish reverse engineered the MUT pids. Lots of history on evolutionm.net

 

[mezje]

BDEL will have more of an effect on boost than base wgdc maps. BDEL is the desired engine load to try and achieve vs RPM. The ecu then controls the wgdc to achieve the desired load using the base wgdc value as a start.


For ecuflash, i believe Colby reverse engineered and wrote his own reflash routine by reverse engineering the way the MUT reflashes. Lots of history on openecu.org. The H8 datasheet even gives an example reflash routine.

For Evoscan, Hamish reverse engineered the MUT pids. Lots of history on evolutionm.net

The more you know, great effort.