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Which ECU for LS/Vtec?

Discussion in 'Engine Building' started by scottp11, Aug 30, 2003.

  1. scottp11

    scottp11 The Seniorest Member....

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    I'm getting a B18 LS motor, which I plan to put a B16 head on... Eventually when I get enough money... So until then, which ECU should I use? (The motor does not come with stock ECU) Thanks for your time and help. :spin:
     
  2. scottp11

    scottp11 The Seniorest Member....

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    Also, it's going in a 97 Civic EX, which is already wired for Vtec... Thanks
     
  3. R.E.Developement

    R.E.Developement Import King of Irvington

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  4. possessedimports

    possessedimports Member

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  5. SleEPeR_CRX

    SleEPeR_CRX Senior Member

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    dont build Ls vtec. a guy at the local track was running 15.3's on his LS/Vtec what was built. all internals done, blueprinted and balanced, i/h/e, msd, hondata, cams springs retainers. the only problem was it was an LS tranny. but shit, thats worse than my LS in a crx, and im running high 14's. If honda didnt make a ls/vtec it probably wasnt ment to be.
     
  6. scottp11

    scottp11 The Seniorest Member....

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  7. JDMilan

    JDMilan Senior Member

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    If built properly with good parts internally then the LS vtec is fine, it's when people take the cheap route to build it and literally just slap shit together, and don't block off with the proper hardware.

    Chances are that kid was a shitty driven or maybe he was running it for the first time ever.


    I ran two different b16s in my eg and like my sig says there was a huge difference in both, i used completey different components on the second project and with slicks netted a full second lower et. BUT, the first time I ever took the first project out to the 1320 I started with runnin a 14.7 and eventually hit 14.3 at the end of the night, with the more powerful second motor my very first time to the track I hit a fucking 15.7 with a 3.5 60ft time, and that motor I eventually got to run 13.3 with slicks.

    So it just goes to show you that yes it takes time to learn how to properly drive your car and learn how to drive properly.


    Milan
     
  8. xj0hnx

    xj0hnx I wanna be sedated VIP

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    And a PR3 won't plug into a 97, an OBD II P30 would run it.
     
  9. JDMilan

    JDMilan Senior Member

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    you could also do this:

    obd2-->1 conversion, P28 w/ ITR base map, hondata.



    that would nice :)


    Milan
     
  10. scottp11

    scottp11 The Seniorest Member....

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    Will the P30/P28 still run the LS motor before I Vtec it? I don't want to have to buy 2 ECU's...
     
  11. lsvtec

    lsvtec GNU/Linux Evangelist

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    Any time that you want to stop spreading this bullshit is fine. THe more you spout the more you affirm that you are indeed a stupid n00b.

    If you are running a Honda ECU with no tuning device or the ECU + a VAFC start with the P72.
     
  12. scottp11

    scottp11 The Seniorest Member....

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    Thanks lsvtec, its good to hear from someone that has actually done the swap... Thanks again. P72 it is. :worthy:
     
  13. dmxbmx

    dmxbmx Junior Member

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    ok ive had 3 ls vtecs over the past 1 1/2 years and i always sent
     
  14. scottp11

    scottp11 The Seniorest Member....

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    Will it be alright to run a Vtec ECU on a non-vtec motor? Just not having the vtec wires hooked up until I get the B16 head? Help! :idea:
     
  15. possessedimports

    possessedimports Member

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    it will be ok ive done it to my friends car and nothing happened. it will just bring your rpms up to 7400. :D
     
  16. lsvtec

    lsvtec GNU/Linux Evangelist

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    Um, no. If you don't hook up the VTEC solenoid you are going to get a CEL. And the ECU will go into limp mode. You will have a fuel cut earlier than the LS ECU and more than likely you will see diminished fuel economy. Don't bother running the VTEC ECU until you have the VTEC head, you won't gain anything.
     
  17. possessedimports

    possessedimports Member

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    hello i didnt say that i will give u a push. i said that it will work :beat: :D
     
  18. lsvtec

    lsvtec GNU/Linux Evangelist

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    But you failed to mention that it is an incredibly bad idea.
     
  19. R.E.Developement

    R.E.Developement Import King of Irvington

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    hmmmmmmm :hmm: true

    but thought that it was the only ecu he has

    my bad
     
  20. pills_PMD

    pills_PMD Super Moderator

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