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Type: Posts; User: Matt_lq4

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  1. Issue is fixed. It was related to the injector...

    Issue is fixed. It was related to the injector wiring being too close to the coil wiring, creating electrical interference/noise. The owner moved his coils a little bit away from the injectors which...
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    drastic airmass drop under boost

    E38 2009 ecu, turbo ly6, ever since going from 40 lb gm injectors to 80 lb SD injectors, in boost the airmass drops dangerously from 1.07 g/cyl for example at full throttle to 0.60 or even as low as...
  3. Would an SD patch solve this or help at all?

    Would an SD patch solve this or help at all?
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    Check what else is under your OS tab, guaranteed...

    Check what else is under your OS tab, guaranteed it's this right here "starter fault checks"....put that to use, write entire and you may be good.
  5. cylinder airmass does huge drop suddenly in boost WOT

    Hi, I have a 2009 e38 ecu with an Ly6, low boost 5 psi, SD 80 lb injectors. At the most dangerous time, without any warning, the cyl airmass drops from 1.07 for example to 0.60 or way lower. The...
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    I'm dealing with a similar issue with the iac not...

    I'm dealing with a similar issue with the iac not stepping in to prevent a stall, try adding 1 gram of air to the 3 proportional airflow LOW tables (one is in gear, one is in park and one is with ac...
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    "If dynamic airflow is greater than idle desired...

    "If dynamic airflow is greater than idle desired air flow, increase the steps. If dynamic airflow is less than idle desired air flow, decrease the steps. "
    That is what I was following in order...
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    I had the blade adjusted to where the iac counts...

    I had the blade adjusted to where the iac counts around 50 but then it had a hard time starting up. I had to crack the throttle a little more to the point of 40-44 counts, at this point the engine...
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    I'll play with the proportional tables when I...

    I'll play with the proportional tables when I have a chance outside
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    It's not that simple as I've already had the...

    It's not that simple as I've already had the blade cracked open more and it caused all types of instability. I had to back it off (currently at .53 V tps, had it at .55-.57 with unstable idle).
    ...
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    I just added one now, thanks for reminding me.

    I just added one now, thanks for reminding me.
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    LsxRT and 102 mm tb tips

    I use to have a tbss intake manifold on my 6.0 Lq4. I have since switched to a Fast LsxRT intake manifold and Warr 102 mm cable throttle body. Unfortunately no matter how I play with the follower,...
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    Amazing amount and quality of material for the...

    Amazing amount and quality of material for the price.
  14. Thread: 3.6 hangs

    by Matt_lq4
    Replies
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    1,868

    How do you properly exit the scanner or editor?

    How do you properly exit the scanner or editor?
  15. Picture of wideband harness connection....suggestions?

    I've been trying to get the best possible routing of my wideband harness and mpvi unit to get the best data with the least amount of voltage offset. This is for tuning customer cars so it's a...
  16. Thread: Just checking

    by Matt_lq4
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    993

    An easy way to confirm this VE reference during...

    An easy way to confirm this VE reference during drastic throttle transitions should be to put it in maf only mode, zero out or severely enlarge values in the VE table, and go for a scan with quick...
  17. Thread: Just checking

    by Matt_lq4
    Replies
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    993

    How much did they say they are looking to charge...

    How much did they say they are looking to charge you for a maf only tune?

    Unless I'm mistaken, even in maf only mode, quick throttle transitions still rely on the Ve table as the maf cannot...
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    Awesome stuff, I'm happy for your progress on...

    Awesome stuff, I'm happy for your progress on this. Just like many things, when the usual way of doing things doesn't work, try something different and see how it goes. I'm glad it worked out.
    The...
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    CiscoDP, post your tune and a log file so we can...

    CiscoDP, post your tune and a log file so we can see what settings you have in your tune.
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    Intake manifold volume is only a transient fuel...

    Intake manifold volume is only a transient fuel option on gen 4 ecus unless you meant volumetric efficiency (VE) and maf have to be dialed in..just trying to avoid further confusion from any...
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    When pasting your error, are you selecting...

    When pasting your error, are you selecting multiply by % - half or multiply by %??? If not, that's where you could be causing your issues.
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    When you command 1.00 lambda, you're actually...

    When you command 1.00 lambda, you're actually getting 0.70 lambda in areas. I suggested disabling trims and tune your ve and maf with the wideband to see if you get any progress because according to...
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    The ones in the picture have the data already in...

    The ones in the picture have the data already in the hp tuners scanner for you but you could use any other wideband sensors as long as you are provided with the voltage offset and other components of...
  24. Hmm, well we shall find out soon enough 👍

    Hmm, well we shall find out soon enough 👍
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    Oops just noticed you're already logging the 2...

    Oops just noticed you're already logging the 2 maf channels and I was typing for so long that I noticed other things you mentioned just now.
    Try lambda error in case the afr error causes some issue.
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