OdessitPashka

hmm, maybe thats what they told you and maybe thats how it sounds to you, but I lived in Russia for 16 years and it's "kak dela?" smile.gif

javageek

I've never actually written it in english though, that's how it sounds when I say it. I had a freind in Germany who was from Moscow and we use to talk the talk at times. laugh.gif

IGP_

Thanks for good link, silvertibbs!
It is very interest information for me. As computer software and hardware engineer I represent car MFI system as usual computer system (maybe I am wrong - please correct me. As car specialist I am dummy).
In this context all car sensors are peripheral devices that are read/write by the ECU. The ECU is central processing unit (CPU). Each car sensor has work parameters with the acceptable working range and ECU has predefined fuel maps that used in accordance with the sensor parameters value changes.
There are two main performance modification routes (maybe both at once but it is very complicated for me):

- try to modify sensor parameter value by the direct modification/replacement of the stock subsystem(CAI/WAI/BBTB/headers and so on ) or by the ECU foolling (piggyback computer, IAT resistor and so on ). After such modification/replacement ECU maybe will change FI policy (timing and width pulses ).
This modification route has one major shortage - it is depends on the weather. Of couse I imply the weather in Russia. So this is the main factor that prevents me to such engine modifications.
As for ECU fooling via piggyback computer I have not enough car knowledges for the piggyback installation and tuning.

-try to modify ECU itself. As I understand there are fuel map data (EPROM memory module in the ECU box ) and CPU itself that executes FI logic based on fuel map data. So it is possible to replace fuel map data (via EPROM memory module replacement by the tuned EPROM memory module ). It is necassary note that stock CPU is still sitting in the ECU box so stock program logic remains unchageable (but with new fuel map data ).
Also it is possible another ECU modifications - stock CPU replacement by the tuned CPU and maybe tuned EPROM memory module.
This modification route does not depend on the weather that is very good for me but has another major shortage - tuning quality. So I am thinking stock EPROM memory module replacement by the tuned EPROM memory module that was done by the qualified tuners would be good performance modification at least for me.

In Russia there are many Audi,VW,BMW tuners but not for Hyundai.

This is my opinion and please correct me if i am wrong. Also excuse me for my English. Unfortunately I have not enough practice in it.

Thanks in advance.

Agarwal

If the russian ECU is anything like the American one, the EEPROM in it is not in a socket, so you'd have to have it socketed to gain access to the EEPROM. You'd have to ship the whole ECU in order to have it socketed and put a performance chip in place of the stock one, or have it socketed locally.

Those MAP ECU are interesting... I need to get my hands on one so I can start hacking it wink1.gif If you guys have one lying around or see one available somewhere, please tell me.

For those who read the post above in which I talk about ECU reprogramming... I've made some progress with the "standard" MAF ECU. I can now tune fuel and timing, but I still need to do some extensive testing. Free time lacks, though.

For those who remember LeadFoot problems with his chip, well... I just sent him a "corrected" chip which, in my testings, does NOT throw a CEL. I drove with it for ~140km. I can't say if the chip *really* makes power yet tough, as my car is turbo and I had to drive off-boost with that chip since it advances timing (can you say BAD for a turbo car? wink1.gif).

LeadFoot will do some testing with the chip when he have some free time, and comment on it. On my side, I plan on making a good performance chip on the dyno next summer.

But having a MAP ECU would be a good idea too wink1.gif I guess it would be possible to provide some sort of "conversion kit" for those of us running FI... if the MAP ECU is *not* OBD2, that would be even more helpful. So if you guys have any information on the Hyundai MAP ECU, please PM me or something wink1.gif

IGP_, I would have offered you a chip for cheap, if your ECU was a MAF one, since that's what I know for now... but we don't know what the future holds wink1.gif

IGP_

Hi, Agarwal!

The ECU box in my MAP-based car has a Siemens logo. Siemens ECU board has socket for the EPROM memory so EPROM replacement for it is very easy. The EPROM memory tuners are ready to send tuned EPROM memory to me (BTW look at the first message in this thread it contains tuner's URL. This company is located in Argentina - even distant from Russia than USA ). I need take out stock EPROM memory module and insert tuned EPROM memory module only. So I can return stock EPROM memory in the ECU box at any time. All required information for the tuners I found on the white sticker on my ECU box.
As I know the American MAF-based ECU is Bosch ECU with soldered EPROM memory therefore the EPROM memory replacement for the Bosch ECU is more difficult than it for the Siemens ECU.
As I said before tuned EPROM memory cost is $200 without shipping cost.
They said that EPROM memory payment is via Western Union and EPROM memory delivery via FEDEX. I doubt because I have not used these international services before. It is possible the cost of the tuned EPROM memory module delivery to Russia will be very expensive for me. But I have old good friend who is living in USA maybe he will help me with EPROM memory devivery to Russia...
As programmer I have great interest to the ECU reprogramming too but I have not any tools for it.
BTW somebody in this conference (maybe in other Hyundai conferences ) has pointed to the Megasquirt project that is based on the Motorola CPU.
Maybe this project has any useful information and tools for us.
Agarwal, thanks for your chip offering but as I said before my car is MAP-based.