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Thread: Need stock ROM for face lift model? 280bhp please.

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    Need stock ROM for face lift model? 280bhp please.

    Hi, everyone ,I have a pre-facelift auto and would like to increase my bhp from 260 up to 280.I think all I need is the code/Rom for the facelift models ECU. Please if anyone has this can they let me know? I have done a search and found nothing . Please help

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    Quote Originally Posted by steveleemagness View Post
    Hi, everyone ,I have a pre-facelift auto and would like to increase my bhp from 260 up to 280.I think all I need is the code/Rom for the facelift models ECU. Please if anyone has this can they let me know? I have done a search and found nothing . Please help
    Hi Stephen,

    Welcome to Club VR-4, it's customary to make an introductory post briefly introducing yourself, where your from, what car you have or would like to buy etc

    Regarding your request, in it's current form it's simply not possible. Facelift Engine ECU ROMs will not run on a Pre-Facelift Engine ECU, simple as. It's not a lost cause though, you have 2 options available to you;

    • Either, you ask someone with MMCFlash to remap your existing Engine ECU (which you can easily get that +20 HP back, and then some),
    • Or, you replace your Pre-Facelift Engine ECU with a Facelift variant (they are a straight swap if you find a Facelift Engine ECU with Traction Control)

    Would you like to know more?

    (Above link is the Common Tuning FAQ, a very good read)
    Have questions about performance upgrades and ECU tuning? Before PM'ing me, Check this thread first
    Please support CVR4 & become a Full member, you get a full years access to guides, games, chat & much more!

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    Jason - I'm not sure the bit about the TCL with the facelift ECU is right? I'm running a plastic case ECU supposedly from a PFL (the processor however is a 7203, which IIRC indicates that it's a FL ECU) and I've got no issues with TCL.

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    Quote Originally Posted by wintertidenz View Post
    Jason - I'm not sure the bit about the TCL with the facelift ECU is right? I'm running a plastic case ECU supposedly from a PFL (the processor however is a 7203, which IIRC indicates that it's a FL ECU) and I've got no issues with TCL.
    I'm only 90% sure its right, based on the following;

    About a year ago, I supplied @alan a FL ECU for his PFL, the FL ECU was from a FL suspected no TCL (wasn't sure), after we reflashed it his TCL light was on permanently. I swapped the ECU out for another FL ECU (which I was quite sure came from a car with TCL) and the problem seemed to go away.

    That said, I have noticed that reflashing ECUs on TCL cars in general causes the TCU to throw a wobbler. Still better to play it on the cautious side though, eh?

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    Well, getting hold of a facelift ECU with TCL isn't exactly easy! I have a 7203, and I get the flashy TCL OFF light. I 'turn off' the TCL to stop the light flashing, i.e. it's on solidly instead. Mrs B has driven it but doesn't press the switch. Not had any issues - other than the only one seemingly being the light!

    But I also have a facelift autobox and matching ECU, to complicate things slightly...
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    The tuning aspect will be something I will need to keep an eye on, as I am aiming to eventually tune my PFL.

    Once I can actually pull the ROM from my ECU I should be able to tell if it's a PFL or FL.

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    Back on topic, Stephen, do you know exactly what ECU you have? Likely to be a metal case 7201, but if you have a later PFL it could be a plastic case 7202. Either way there are options to put a remap on and get extra power. Depending on how you want to go about it.

    7201 ecu from Kanji
    7202 ecu remapped by some Club Members
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    Quote Originally Posted by wintertidenz View Post
    The tuning aspect will be something I will need to keep an eye on, as I am aiming to eventually tune my PFL.

    Once I can actually pull the ROM from my ECU I should be able to tell if it's a PFL or FL.
    Surely just looking at the ECU will confirm if it's a PFL or FL variant?

    Question 4 of the Common Tuning FAQ please

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    MD340289. Inside however is a 7203 board - which surprised me, as I would expect it to be a 7202.

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    Quote Originally Posted by wintertidenz View Post
    MD340289. Inside however is a 7203 board - which surprised me, as I would expect it to be a 7202.
    There isn't always a clear relation between the part number and the chip. What matters most is the PCB ID, the long number that starts JE331xxxxx, there's a good thread on OzVR4 about this

    Could be perhaps just the bare PCB was supplied and someone had to find a case it'd fit in?

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    Quote Originally Posted by Atik View Post
    7201 ecu from Kanji
    7202 ecu remapped by some Club Members
    Pre-flashed 7201 ECUs from Kanji are a great drop-in power increase option. 10 minutes work to swap them out. A few club members (like myself) can now reflash 7201s with MMCFlash in a similar fashion as remapping a 7202, but I'd still lean towards the Kanji ECU because it's a prefab, drop-in solution.

    H8/539 ECUs appeared briefly between the transition between 7201 and 7202 ECUs, these H8/539 ECUs can run the same ROMs as 7202 and 7203s but requires MMCFlash to install them.

    7202 and 7203 ECUs can be remapped easily with EcuFlash and a Tactrix Cable, something quite a few of us have

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    bit 13 of periphery0 will control TCL operation in ECU.

    When you changing the periphery, you need to make sure your editing the correct address...

    Here's a list 8 possible configurations hard coded in all roms, and the relevant periphery address.

    7201 based roms (remember byte sex is different in this rom!)
    MapIndex 0 (EM0003) = 0x72
    MapIndex 1 (EM0004) = 0x74
    MapIndex 2 (EM0005) = 0x76
    MapIndex 3 (EM0006) = 0x78
    MapIndex 4 (EM0003) = 0x7A
    MapIndex 5 (EM0003) = 0x7C
    MapIndex 6 (EM0003) = 0x7E
    MapIndex 7 (EM0003) = 0x80

    EM200x based Roms:
    MapIndex 0 (EM2003) = 0x272
    MapIndex 1 (EM2004) = 0x274
    MapIndex 2 (EM2005) = 0x276
    MapIndex 3 (EM2006) = 0x278
    MapIndex 4 (EM2003) = 0x27A
    MapIndex 5 (EM2003) = 0x27C
    MapIndex 6 (EM2003) = 0x27E
    MapIndex 7 (EM2003) = 0x280

    Other Roms
    MapIndex 0 (EM2381) = 0x272
    MapIndex 1 (EM2428) = 0x274
    MapIndex 2 (EM2381) = 0x276
    MapIndex 3 (EM2381) = 0x278
    MapIndex 4 (EM2381) = 0x27A
    MapIndex 5 (EM2381) = 0x27C
    MapIndex 6 (EM2381) = 0x27E
    MapIndex 7 (EM2381) = 0x280

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    Quote Originally Posted by wintertidenz View Post
    MD340289. Inside however is a 7203 board - which surprised me, as I would expect it to be a 7202.
    Part number is irrelevant, as both 7202 and 7203's came with that case number. that ECU would have EM2005 rom loaded from factory if the case has that part number - which is a TCL enabled rom by default.

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    Thanks for the fast response guys. Im very new to this so please correct me if im wrong. I presume from what iv read that I should have a 7201 ECU running at 260hp. Do I just need to remove the EEPROM and flash it with a EEPROM burner with the face lift models code? Or is it more complicated than this? Thanks in advance

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    Quote Originally Posted by steveleemagness View Post
    Thanks for the fast response guys. Im very new to this so please correct me if im wrong. I presume from what iv read that I should have a 7201 ECU running at 260hp. Do I just need to remove the EEPROM and flash it with a EEPROM burner with the face lift models code? Or is it more complicated than this? Thanks in advance
    Nope, it's not that easy.

    The ROM includes the runtime and not just the tables. These are incompatible between 7201 ECUs and the rest of the VR-4 ECU series (H8/539, 7202 and 7203 respectively).

    If you've got an EEPROM burner and are that way inclined, depending on how early a 7201 you have, you might find you get lucky and find the EEPROM is a separate IC. Like the main IC, this will be a hard-soldered chip, not in a ZIF socket. I suspect from about 1997 onwards the EEPROM was built into the main IC.

    Definitions for the 7201 can be sent your way, you can edit the ROM in EcuFlash and then burn the hex / bin file with your burner.


    That, or, you can just drive to Birmingham and I can reflash it for you with MMCFlash

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    Hi, oh well nothings ever easy is it. Thanks for the offer of flashing my chip for me tho. I might take you up on that, but first could I please have the definitions for 7201 to see if I can get my round it? Thanks again

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    Quote Originally Posted by steveleemagness View Post
    Hi, oh well nothings ever easy is it. Thanks for the offer of flashing my chip for me tho. I might take you up on that, but first could I please have the definitions for 7201 to see if I can get my round it? Thanks again
    Here you go;

    7201 Auto TCL Stock ROM
    7201 Auto TCL Definition

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    Or just fit a boost controller!

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    Quote Originally Posted by BCX View Post
    Part number is irrelevant, as both 7202 and 7203's came with that case number. that ECU would have EM2005 rom loaded from factory if the case has that part number - which is a TCL enabled rom by default.
    So potentially, the ROM on this ECU could be quite handy for those with PFLs and a FL ECU?

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    Thanks alot to everyone whos replyed.You have all been very helpfull. Cheers

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