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  1. OK... update... you can check all of the wiring...

    OK... update... you can check all of the wiring and the connectors. You can change the fluid and filter. The Sonnax valves absolutely helped things. You can install a ACDelco 24222077 GM Original...
  2. I bought the Sonnax improved boost valve with the...

    I bought the Sonnax improved boost valve with the o rings around it (Part #34200-01K). I did not buy the stiffer spring. I also bought the line pressure regulator valve (Part #34200-14K) and...
  3. True. I did it without removing the trans. Drop...

    True. I did it without removing the trans. Drop the pan and get the filter out of the way. There's a snap ring that must be removed. You'll have to fiddle with the old part before it falls out......
  4. I bought the Sonnax improved boost valve with the...

    I bought the Sonnax improved boost valve with the o rings around it (Part #34200-01K). I did not buy the stiffer spring. I also bought the line pressure regulator valve (Part #34200-14K) and...
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    Following...

    Following...
  6. UPDATE 408 LS with 4L85E Supermatic seems to "push through brakes" at idle when hot

    Code P1810 set today. I am currently researching it. Does anybody have any experience with this code in a 4L85E? Is common? Are there certain things to look for? This seemed to happen...
  7. bump

    bump
  8. I've done some reading on the subject. During...

    I've done some reading on the subject. During that time, I stumbled upon https://www.sonnax.com/parts/1989-lube-regulated-pressure-regulator-valve . Sonnax says it "Prevents converter or pump...
  9. 408 LS with 4L85E Supermatic seems to "push through brakes" at idle when hot

    I have a 408" LS with a GMPP 4L85E Supermatic transmission (E38 engine controller and T42 trans controller) that seems to want to push through the brakes at idle when the truck is warm. The...
  10. And yeah... i had to send all of my screen shots...

    And yeah... i had to send all of my screen shots and license files again too. Seems like they hired a bunch of new guys, or the existing guys got lazy. No real troubleshooting going on, just guys...
  11. I was able to delete the channel and add it back....

    I was able to delete the channel and add it back. Add the 02 sensor, click transform, the select AEM. There is a doc in the forum that includes screen shots. Do a search for "AEM wideband" or...
  12. schpenxel says you either have too much air or...

    schpenxel says you either have too much air or not enough timing. schpenxel probably correct. cap on unused vacuum port at rear of Hi Ram probably blown off under boost. replaced nipple/cap with a...
  13. following this thread

    following this thread
  14. Driver's side exhaust manifold glowing hot, ECT up, AEM wideband not reading

    Anybody got time to check an SD tune? Had the truck idling in the garage and noticed the driver's side exhaust manifold glowing red red hot. ECTs higher recently. Truck doesn't return to idle...
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    I would like to know also.

    I would like to know also.
  16. Understood. We have the same opinion. Tuner...

    Understood. We have the same opinion. Tuner never re-enabled the trims. It was an SD tune, but not done correctly in my opinion. Thanks for the confirmation.

    Just talked to my buddy. He...
  17. 1. Popping in the exhaust. I talked to him about...

    1. Popping in the exhaust. I talked to him about spark - plugs, wires, firing order. Plugs are new. He says he didn't crack the insulators putting them in... It seems that everything got put back...
  18. Thank you very much for the detailed response. ...

    Thank you very much for the detailed response. As I mentioned, I'm trying to help out a friend. He had the truck tuned by a professional that has a dyno in the shop. I hate to pick apart a guy...
  19. Stock 5.3 with turbo. No power and popping in the exhaust.

    Friend's 5.3 does not accelerate well and pops/sputters. It is basically a stock 5.3 - truck intake, factory heads, factory crank and rods and pistons. It's got a inexpensive Chinese turbo. He had...
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    Somewhere on your computer, you will have a HP...

    Somewhere on your computer, you will have a HP Tuners file with an .hpt extension. This is the tune file that you used to update the ECM in your Chevelle. Click on "Reply" and then "Go Advanced"...
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    y Post yer tune cowboy

    y

    Post yer tune cowboy
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    Post pics of the bus!!

    Post pics of the bus!!
  23. Mine is doing exceptionally well after all of the...

    Mine is doing exceptionally well after all of the gremlins have been fixed. Hoping to get the turbo back tomorrow or Thursday. Will start building a shrine to Greg Huggins and Passion Performance...
  24. You talkin' 'bout me?

    You talkin' 'bout me?
  25. View Post

    That's how you do it - just make sure to "hand" add in the EQ table if you choose to use it, which I recommend doing ;) Had one recently that had an ethanol sensor shorting out and it was throwing...
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