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  1. M

    LBZ: Need Advice, New to Tuning

    log Here is a log, let me know what you guys think. It doesn't seem to be de-fueling as much as it had, but I did back off the tune. It looks like it is slipping the converter a little, maybe 200 RPM max and the spikey graph would explain the shudder I had felt before. Is this a lot of...
  2. M

    LBZ: Need Advice, New to Tuning

    UGH, this converter suuuuuucks......
  3. M

    LBZ: Need Advice, New to Tuning

    It wasn't the converter clutch itself. It was a shift solenoid. It would shift, the converter would lock, then a shift solenoid would blip (i could see it on the logs). This would happen under normal driving/low load conditions. I never had much success getting the converter to lockup when i...
  4. M

    LBZ: Need Advice, New to Tuning

    Here is where I'm at with the tunes. I ended up with too much fuel on the big tune for my torque converter I think judging by the way it felt. I backed off the pulse width here. The issue I have on the higher HP settings is that it feels like the Trans is limiting the power output...
  5. M

    LBZ: Need Advice, New to Tuning

    Pattern B is the TH table. I could never figure out why I got that studder when locking up the TC so I basically went back to the stock tuneup, just lowered 5th and 6th upshift so it will idle along at 50mph on my local roads instead of 1700 RPM for no reason. I'm going to fool around...
  6. M

    LBZ: Need Advice, New to Tuning

    This is the route I'm taking. Either the TCM doesn't know its in manual (not the case), or EFILive just doesn't have those tables mapped out. My plan is to put it in manual position, then engage tow/haul to select the flattened shift point tables. I got it kind of working so far. It will...
  7. M

    LBZ: Need Advice, New to Tuning

    I'm not trying to do that. However, I can't find anything in the TCM tables that controls that either.
  8. M

    LBZ: Need Advice, New to Tuning

    I'm pretty happy with this tuneup at this point. Let me know what you think. Thanks guys! Now I'm moving to developing a full manual mode and fixing the cold temp lockup issue with my trans tuneup.
  9. M

    LBZ: Need Advice, New to Tuning

    Thanks guys. I updated the trans setup some more as it didn't quite get to where I wanted. I attached an updated ECU tune with more timing in down low. I also attached an excel sheet that will help illustrate what I'm saying. Using the timing calculator will cause you to pull a lot of...
  10. M

    LBZ: Need Advice, New to Tuning

    You guys might get a kick out of this. My attempt at a manual mode transmission setup. As of yet untested. Operating theory; Put trans in T/H with selector in manual mode. Also, my latest as of yet untested but only slightly off my last ECU tune. 60-70% cruise timing and low boost.
  11. M

    LBZ: Need Advice, New to Tuning

    I'm wondering about low RPM timing. Stock you can see the timing is 100% BTDC. I left my tune this way only changing places where it was below 50%. What is the best for power? What is the best for economy? Would it be better to go 50/50 everywhere? I'm curious why they did this stock.
  12. M

    LBZ: Need Advice, New to Tuning

    Something like this?
  13. M

    LBZ: Need Advice, New to Tuning

    Alright guys. I'm on to the next thing to figure out. I'm having trouble controlling the cold vane position. Below 25mm3 or so it closes the vanes to like 75%. This is fine for warm up but it doesn't transition very smoothly when I get up into the target boost tables. It also doesn't stay...
  14. M

    LBZ: Need Advice, New to Tuning

    I could feel it. It feels like a gust of head wind. I fixed the problem today although unfortunately I can't tell you what caused it. I started from scratch, making small changes and logging every time. I'm finally back to where I was and then some. I spent about 5 hours this morning on it...
  15. M

    LBZ: Need Advice, New to Tuning

    Starting around frame 4500 in this log. This one should be a little clearer. I don't see anything in the tune that should cause this so I guess I should put the stock timing map back in and make sure it wasn't a fluke but I know that's all I changed. The closest thing I found was table 2227...
  16. M

    LBZ: Need Advice, New to Tuning

    Check these logs out guys. Between frame 3300 and 5400 you can see vane position and boost oscillation at certain mm3's. The only difference between the two tunes is that I added 15% timing in the cruise area of 0909. My thought is that when it smooths out in the middle it is dropping to...
  17. M

    LBZ: Need Advice, New to Tuning

    Just FYI, took it for a run today after the cooling system service, new belt and idlers, taping the intake for water/meth, EGT probe/CTS2 install. EGT's peaked at 1350*, probe in the passenger manifold right before the flange. I'm not sure what these run stock but I have about 10% pulse width...
  18. M

    LBZ: Need Advice, New to Tuning

    Care to elaborate on what changes you had to make?
  19. M

    LBZ: Need Advice, New to Tuning

    Welcome! I'm not your guy but hopefully you can get a hold of someone. I know there is more to the LMM than the LBZ but it can't be that bad. My biggest problem is I don't know what the safe limits are. If I knew that I would just play around until I got things where I wanted them. This...
  20. M

    LBZ: Need Advice, New to Tuning

    You guys will probably think I'm nuts but I really don't mind the lag to a point. I do need to make some downshifts happen sooner though for my tastes. I do have a specific goal in mind for this if you guys are interested. The jury is still out. I went back to the stock TCM tune, modified...
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