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L2 / L5 Ecu mod- No Boost cut

Discussion in 'Perodua' started by E-Tech, Oct 7, 2009.

  1. E-Tech

    E-Tech Senior Member
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    Hi all car mod...
    Well I would like to share on the way and method to remove boost cut
    for those that have transplanted turbo L2/L5 into their kancils.....

    Actually it can be done very easily and cheap at the ECU aka computer box.
    But not many ppl out there know the secret.... i have seached and yahooed and goggled, i know there is no FOC answer... malaysia are not like mat salleh, do not post up their diy projects. Maybe also becasue wanna make money....

    You know after some reverse enginneering and checking want ppl do and charge RM150-300 is just a cheap RM0.50 DIODE!!!!

    SO far I have done this modification for 5 kancils with L2 ecu with success.. 2 drag cars and 3 street running car.... all have confirm that no boost cut and rpm now cuts at 9500..a/f is good range and can feel the power...

    Just image ....RM0.50 modification... so for those DIY, if you are interested... pls pm me...FOC

    Thanks for reading....
     
  2. DJgErM

    DJgErM Senior Member
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    if its true...thanks for sharing bro..
     
  3. E-Tech

    E-Tech Senior Member
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    Hi bros,
    Surelah it is true....
    And my PM box is full, many PMs....

    So pls email me.
    I will prepare the photos and direction and mail to you guys that are interested...
    However, there is a concern that you will use this info and charge others.....
    So what should i do??? Do it for you or just send you each the component & direction?

    First intro instruction...

    1. open you ecu cover... just 4 clips.
    2. Now you can see the inside..
    3` At the connector side you will see all the pin connecting to the pcb(papan litar)
    4. Nearly all pin have the markings...
    5. Modification will be at the short (16pins) connector..
    6. You should see marking like...SPD, IDL, T, N+, KNK, THW, SET, VC
    IOP, P, -, N-, OX, THA, -, PIM
    Can you guys understand so far?...Is my direction clear?
    Sorry currently do not have a L2 or L5 ecu on hand to take pictures...

    How does boost cut work? The ecu cut fuel at a pre-fix boost.
    So some pomen just simply fix a one way value at your intake pipe to actually make it bocor so that the ecu cannot get signal to hit the prefix boost.. but this have side effect- bocor mah....
    and how mauch they charge you? RM50 ~80 (one way valve not free mah)
    So, ECU detects boost reading from?..... to be continue...

    Pls sabar, and do not pay to modify you. DIY!

    ---------- Post added at 08:47 AM ---------- Previous post was at 08:41 AM ----------

    Keywords for google yahoo msn search...
    L2
    L5
    Daihatsu
    ECU
    ECM
    Computer
    Modify modification
    Upgrade
    Buang boost cut
    Open boost
    DIY
    RPM cut
    Speed cut
    Kancil with L2 L5 speed cut rpm cut boost cut
    How to
     
  4. E-Tech

    E-Tech Senior Member
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    Hi all bro...
    Just completed a simple write up but not completed....
    Hopefully someone can put it up nicely in their blog....
    Tonite okay....
     
  5. E-Tech

    E-Tech Senior Member
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    Hi guys...
    Have a look at the pictures.....
    Can understand?
     

    Attached Files:

  6. E-Tech

    E-Tech Senior Member
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    Fuc-krid,
    It is here...... sorry for mis communication..:biggrin:
     
  7. fuc-krid

    fuc-krid Senior Member
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    bbbut i can see very well how to do :) hihihi
     
  8. masrun82

    masrun82 From Facebook

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    cant see clear...can u zoom in that pictures?...its working for mira L502 ecu
     
  9. tigger5251

    tigger5251 Banned

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    yalor, Etech,

    Can upload a more clearer pic or not ? And dowan the "cartoon" patch covering the soldier job....
     
  10. monster111

    monster111 Senior Member
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    nice instruction..actually the way it work is very simple

    solder a 4.3v zener diode between GND and PIM pin and thats it.

    wat that do was whatever voltage above 4.3v from map sensor will be send to earth..no more cut
     
  11. fuc-krid

    fuc-krid Senior Member
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    izzit true like that ka e-tech???
     
  12. E-Tech

    E-Tech Senior Member
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    Fuc-krid....
    Item on da way....
     
  13. SYeNi69

    SYeNi69 Senior Member
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    orr theres another way .. by changing to larger injectors and going negative on ur SAFC ... worked for me all the way till 2.7bar ...

    same concept as Etech mentioned but then there is a limit to the one he mentioned ... because this method basically cheats the ECU to think that u have never reached 1.0bar to trigger the boost cut ... maybe its reading 0.9bar all the way but then u are probably boosting up to 1.5bar ...

    Bare in mind that ur fueling is not correct and may lead to piston berlubang and all if u boost high ... because the fueling is for maybe 0.9bar ... safe if gonna go below 1.3 bar ... ive tested it ...

    safe method would be larger injectors ... safc 5 button / 1 & 2 only doesn't work with neo ... fuel reg and tune ur safc to be negative ... stock L2 engine with proper fueling can go all the way till 1.8bar :nurse:

    p.s. if wanna remove speedcut just cut the green wire going into ECU .. settle problem ... no rev cut on L2 ... pros - can reach 180kmh++ easily ... cons - sumtimes ur power steering goes haywire ... depends actually ...

    gud Luck Happy moddin ... :biggrin:
     
  14. monster111

    monster111 Senior Member
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    how to remove the rpm cut?
     
  15. SYeNi69

    SYeNi69 Senior Member
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    Where got rpm cut bro ... just speed cut ... potong the green wire going into the ecu and problemo solved ...
     
  16. masrun82

    masrun82 From Facebook

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    if u not confirmed thee green wire is speed cut..open u ecu and see wire(pin) labeled SPD...just cut it.

    good lucky..
     
  17. monster111

    monster111 Senior Member
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    u cant rev over rpm 8.5k rite? that is the rpm cut
     
  18. SYeNi69

    SYeNi69 Senior Member
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    bro .. who the hell drives a kancil and pulls it all the way to 8.5k rpm ??? u think vtec aa ?? ive been there once and never did it again till then ... no rev cut lor ...

    Here's a word of advise ... last time when i was playing kancil ... guess what happens if u over rev and go to 9k rpm ?? It happen to a friend who put in some serios high deg. cams from matspeed ...
    - rocker arm patah and guess what the cams patah 2 ...
    - con rod also snap ...

    :rofl:
     
  19. monster111

    monster111 Senior Member
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    lol

    nowadays all the kancil also pull damn high one..tebo too big mah...got cut at 8.5 for stock l2..
     
  20. masrun82

    masrun82 From Facebook

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    ahhhhhh...my kancil over 12k rpm......no cut rev....i will post my meter video if u can believe..ahaha
     

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