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Type: Posts; User: lwrs10

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  1. Replies
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    Victory is mine. Now to figure out this XDF...

    Victory is mine. Now to figure out this XDF stuff.

    2007 Cobalt SS LSJ 2.0 Supercharged.
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    you either have to activate the AC fan control in...

    you either have to activate the AC fan control in raw hex in the system segment(best way), or swap in a camaro system segment. None of these can you do in HP tuners.
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    Would love a 2007 Cobalt SS BIN file.

    Would love a 2007 Cobalt SS BIN file.
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    That is the intake I am running! ...

    That is the intake I am running!

    http://i.imgur.com/eGUxTaUl.jpg
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    The stock Vortec 5.7 has the injectors under the...

    The stock Vortec 5.7 has the injectors under the upper plenum. People call them the poppit or spider style injectors. Not only are they not upgradeable, they create a pretty big restriction in...
  6. The 5.7 and 4.3 throttle bodys are the exact...

    The 5.7 and 4.3 throttle bodys are the exact same, except for the throttle shaft and blade, and are both 70mm. The one on my truck is a 76mm from a marine engine. I would be very interested in this...
  7. mine was at 6.86.

    mine was at 6.86.
  8. Finally some time to reply... Finished up...

    Finally some time to reply...

    Finished up swapping the engine out. Bone stock motor with the same intake and injectors. Still had the lean spike and still had the big KPA fluctuations. Looking...
  9. here is a log with some pretty distinct spikes....

    here is a log with some pretty distinct spikes. One happens about frame 3850.

    https://docs.google.com/file/d/0B4qslwsH0IjsUk9SSTRXY3RPSlU/edit?usp=sharing

    Here is a 2010 Camaro SS LS3 bone...
  10. I will post some logs in a few minutes. I stayed...

    I will post some logs in a few minutes. I stayed up all night swapping in the other motor I had and drove it to work today. No way for me to post logs from work, as I do most of my posting from my...
  11. I am in no way trying to argue. I can post a...

    I am in no way trying to argue. I can post a stock ls3 tune that has those negative short pulse adders. And as I said before, I would like to see the data you have.

    My apologies for making you...
  12. Injector data is wrong? Fuel pressure is 58 psi,...

    Injector data is wrong? Fuel pressure is 58 psi, and the flow rate is 41.7lb/hr at that pressure.

    The offsets are derived from the stock LS3 tune, using the 400 column, which is equal to the 0 kpa...
  13. Which log would you like to see exactly? And I...

    Which log would you like to see exactly?

    And I am running the LS3 injectors.
  14. Not sure a broken valve spring would make both...

    Not sure a broken valve spring would make both banks go lean at the same time though.
  15. there is that too. we can throw out the WOT...

    there is that too.

    we can throw out the WOT stuff, because I had a mechanical failure. But....gotta get rid of this lean then rich spike at part throttle once i fire up the new engine this...
  16. still trying to wrap my head around what you are...

    still trying to wrap my head around what you are getting at with the map signal. It went all the way back to october of last year through my logs when my engine was completely stock. The MAP looks...
  17. I hope it is too. And.....looks like a...

    I hope it is too.


    And.....looks like a valvespring broke, and the lean spike was not the root cause. Dropped #5 intake valve. Took the valve cover off and noticed the spring and locks/retainer...
  18. Here is that lean spike when not WOT. You can see...

    Here is that lean spike when not WOT. You can see everything is steady as can be when it happens. I have even hooked an oscope up to an injector, ran a jumper into the cab, and monitored the...
  19. I need to post some screenshots of this lean...

    I need to post some screenshots of this lean spike when not WOT.

    as far as the MAP sensor varying at WOT, what would cause that? Truck ran perfect everywhere else but that lean spike. I do have...
  20. Torque management is zero'd out in my tune, so...

    Torque management is zero'd out in my tune, so not sure on that. I have ran it full open loop and it will still do it. Does not have to be WOT, it will do it anytime it is above 75kpa, and held there...
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    Hey...this looks familiar! its Randy BTW

    Hey...this looks familiar!

    its Randy BTW
  22. Motor blew up today.....need some tuning experts in here.

    I have been fighting this weird lean spike issue I have any time my MAP reads above 75KPA. It happens open loop or closed loop, speed density or mass air, every single time it passes the 75KPA point...
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