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Thread: boost cut?

  1. #1
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    boost cut?

    Is there a boost cut for fuel or spark on the ba xr6, seems like im hitting some kind of limiter at 9.5psi, it will do it at different rpms in different gears but always around 9.5 psi, this is a stock tune just changed the injector data for the fg injectors. I can't seem to find a table with it in there.
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  2. #2
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    have you tried looking at adjusting the overboost settings etc in engine diag?
    i can't help you with actual settings, just didnt know if you knew it was there lol

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    arrgg no i didn't know that was there, im quessing because my actual boost vs commanded is so far out it will triger over/under boost threshold condition?. So do i dial in my wastegate DC to get my commanded boost back in check?.

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    Ok I have been reducing the wastegate duty cycle and its not doing a thing. I'm I go the right way 1 for full boost 0 for none?. Any help..

  5. #5
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    Are you taking the piss will ?
    FG F6 400+RWKW .....10.9 @ 132mph.... FIRST 10sec F6 in SA ( sold )
    DYNO DYNAMICS 1200hp ...... Tuning weapon..... ( sold )
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  6. #6
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    No not at all, this is the first time I have tuned a falcon so I don't no what to expect when changing tables. I don't see how I could be takin the piss.

  7. #7
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    Maybe the solenoid is playing up?

  8. #8
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    if you set it to 1 it will command 100% boost!

  9. #9
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    So I'm going lower then stock in order to reduce boost but nothing is happening, boost stays the same

  10. #10
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    Quote Originally Posted by will15 View Post
    No not at all, this is the first time I have tuned a falcon so I don't no what to expect when changing tables. I don't see how I could be takin the piss.
    Because you're asking very elementary questions.....
    Start reading if you don't know how to tune a turbo
    FG F6 400+RWKW .....10.9 @ 132mph.... FIRST 10sec F6 in SA ( sold )
    DYNO DYNAMICS 1200hp ...... Tuning weapon..... ( sold )
    OFFICIAL JONNY TIG INDUSTRIES SUPPLIER ..... Biggest and lightest intercoolers for B and F falcons
    SUBARU BRZ ......AVO TURBO KIT coming......soon
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  11. #11
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    Wow, I would not ask if I could not find the answer. There is lots of info on closed loop for haltechs and other ecu I can't find crap on xr6 turbo. So is there some kind of rule you have to spend so many hours googling before you ask a question on here. You might find it easy to do these tables, but I bet you asked lots of question when you first started other wise how else are suppose to learn this stuff. So is there some one on here that could please help me, with out pointing out how elementary a question is.

  12. #12
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    most of it was told to you in your original thread boost control duty cycle

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    So you would think the solenoid is playing up then? I don't know why you guys give cryptic answers. A simple yes that is correct with how you adjust duty cycle maybe check your solenoid would be great. Would save me and you guys time and any one else reading this thread for future reference.

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    if YOU look at your old thread it tells you to command what pressure you want & then have the duty cycle at 1 for whole lot & then start lowering until it is close to what your commanding/want!

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    the ford community is bit like that unfortunately...

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    Yeah seems that way, I just check the wastegate actuator and the solenoid they seem fine, maybe the gate was a little sticky. So I will be fd as to what's going on.

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    I just disconnected the solenoid and run straight to the wastegate and still hit 9.5psi and the threshold limit, so must have a problem with the wastegate I guess. I think they should open at 5psi is this right, any body?

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    The FG wastgate I checked on the bench just started to open at 4.5 psi
    Tune with actual data not simulated data!.....Applied Road/track Tuning

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    Sweet thanks man, looks like a gate problem. Great way to start my first tuning experance with a xr6.

  20. #20
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    Could it be possible this car would need a wastegate port, it's running a 4" dump pipe into 3.5" full system and high flow cat.