Urd mk1.5

Discussion in 'F/I Mods & Tuning' started by justin13703, Mar 13, 2011.

  1. justin13703

    justin13703 Active Member

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    Ok. Well I guess I'll tackle that one later. As for right now, the check engine light is gone and the belt stopped squeaking after driving a couple miles so everything is good. Gadget I'll be getting ahold of you soon to see about getting this thing tuned so I can finally romp on it again.
     
  2. justin13703

    justin13703 Active Member

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    And on my ride home I noticed that the truck seems to run alot smoother and quieter now. The new supercharger isnt near as loud as the c30, I kinda liked that the c30 sounded like a damn passenger jet taking off lol but the new one definitely seems like it flows alot better and still whistles pretty nice. Makes it a little more of a sleeper. I can still hear a little bit of a belt squeak though, anyone know of a good way to help get rid of that? My friend said a wire brush and pb blaster. I was like yeah I'll pass on that lol
     
  3. Torspd

    Torspd Moderator
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    Time to upgrade your injectors and tuning capability now bro. That way you can really take advantage of the new power. With Gadget right around the corner from you, I know for a fact he can tune that thing in perfectly. :top:
     
  4. justin13703

    justin13703 Active Member

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    I would love to but with just getting a house I need to go easy on the money for a little while. For right now I'll have to deal with the 1000cc 7th. Plus I don't think the map2 is available anymore and the map3 isn't out yet, I could be wrong though. Trust me I will get one and injectors but I need to save back up for a little while. Bills suck lol
     
  5. Torspd

    Torspd Moderator
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  6. justin13703

    justin13703 Active Member

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    I'll take a look at that when I get home, my phone won't open up the link. But if I decided to do this next, where would the best place be to get some trd injectors without paying out the ass?
     
  7. Torspd

    Torspd Moderator
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    I would talk to Gadget. He has a pretty good price.

    If you want something else, you can look up www.rceng.com RC Engineering.
     
  8. Slay0r

    Slay0r New Member

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    either that or catch some used one if/when they go on the market
     
  9. Murderface

    Murderface New Member

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    The best thing to do is to wait for someone that's upgrading their TRD injectors to the 668cc's and then hopefully they will sell them. Only problem is that with no X-1's around no one is jumping to do this or go the MAPECU route.
     
  10. Gadget

    Gadget Well-Known Member

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    The movement on 668 injectors has slowed down a good bit since the X-1 supply has dried up.

    G
     
  11. X-roller

    X-roller New Member

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    I am in the market for those but also for a tuning system that can run them.... I wanna run them on e85 with the upgraded set up like this guy has.... we will be in contact g but I need a tuning system to handle it first.
     
  12. darthyota

    darthyota Active Member

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    coughhaltechcoughcough
     
  13. justin13703

    justin13703 Active Member

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    So the MAP ECU's cant handle 668's?
     
  14. Torspd

    Torspd Moderator
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    Yes the Map-Ecu2 can handle the 668s or much higher. As well as the Haltech, or other advance ecu's on the market.
     
  15. X-roller

    X-roller New Member

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    The map ecu2 can not but the mapecu3 I am not sure of.... We had this discussion in another thread
     
  16. Gadget

    Gadget Well-Known Member

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    Not sure. Never tried tuning the 668s with a MAP-ECU2.

    The MAP-ECU2 tunes the fuel by adjusting the signal from the MAF sensor. When you go to big on injector size you have to pull a lot of signal out at idle and light load. There just is not a lot of signal there to start with at idle and you take a bunch of it away you will have an unstable idle.

    The X-1 had a lot of problems with the 668s for a good while. It took two major firmware updates to get it to handle large injectors well. The .05 beta firmware that has not been officially released other than for the URD supercharger kits finally had very good injector control.

    With the MAP-ECU2, I have tuned 550cc injectors with no problem at all. I did one turbo 1GR that had 600cc and it worked also. Just never tried anything as big as the 668 with the MAP-ECU2. We can always try it.

    G
     
  17. X-roller

    X-roller New Member

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    that answers it perfectly. :biggrin: Thanks g.
     
  18. Torspd

    Torspd Moderator
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    If that is the case, then why are there files on there that are for that come pre-loaded for 2JZ-GTE 720ccm or 2JZ-GTE 850ccm? I know they can go maf delete, but they can tune for that size injector. I just looked at the file on my computer.
     
  19. Gadget

    Gadget Well-Known Member

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    No idea.

    I can only speak to what I have personally done. I don't know crap about tuning a Supra. I do know how to tune Toyota trucks and there are limits to different approaches. I might be able to tune 668s just fine, but I have not done it so I cannot tell someone it works.

    I can tell you that the MAF Elimination mode of the MAP-ECU2 totally does not work on Toyota trucks, but it works very well on the Supra. Don't ask me why because I can't tell you....

    There are other issues with jacking the MAF signal to far off also. The more you reduce it to dial in BIG injectors causes the ECUs load calculations to be really off. This has a few side effects. One is that it will want to advance the ignition timing significantly which is not always good on an engine covertred to forced induction. It also causes the auto trans to shift different;y. The 1GR uses a load calculation to alter how it shifts, not so much when, but how. We discovered this with the X-1.

    The way the X-1 was setup is that the MAF flow would be feed back to the ECU to mirror the flow limits of a stock engine while the X-1 took full control. The ECU thought it was still running a stock engine and was kept happy while the X-1 took over the hard work. The problem appeared with the auto trans was doing the slide slip bump shifts because of the load control on it was for a stock N/A engine. So, this was changed to allow the full MAF signal to go through and the trans started shifting much better and crisper without going into the rev limiter as much. That cause other things that needed to be done. The ignition timing tables had to be redone to compensate for the ECU pulling more timing and so on.

    With these newer engine control systems we really need to control the ignition after the ECU and same with the injectors. This is very different than most of the piggy backs on the market. The Unichip is still tuning fuel by jacking the MAF sensor, so is the MAP-ECU2. AEM has a product that adjusts the injectors directly. Now for ignition, we really need to adjust that on the back side of the ECU also. The MAP-ECU2 does this by adjusting the signal to the ignitors and so does the X-1. Now AEM and unichip are jacking with the signal from the crank position sensor on the front side of the ECU. This has side effects of screwing up the VVTi and injector timing and some other things.

    Anyway, what I am getting at here is minor tweaks to the signals works, but go to far and you have unwanted side effects and so on. There are pros and cons and limits to every approach.


    G
     
    #59 Gadget, Mar 16, 2011
    Last edited: Mar 16, 2011
  20. blackx-runner

    blackx-runner "White Flash"

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    I think the issue is in the size difference between stock and upgraded. Like G said the tuning is done by altering signal (voltage I believe) A huge jump in injector size will require a huge difference in the signal to the ECU. I think I read somewhere that double the size is a general guideline.
    What I am wondering is if the TRD flash is done for 425cc injectors will it be then easier to tune the 668s because the size difference is now much less?? :dontknow:
    Do people with the TRD flash that have upgraded to the 668s and the X-1 has less idle issues than those of us with no flash?
     

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