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-   -   Question: BNIB Newb. Need basic info - Exhaust/Turbo Brake (https://www.dieselplace.com/forum/3-power-performance-tuning/149-efilive-tuning-software/975278-bnib-newb-need-basic-info-exhaust-turbo-brake.html)

steakman 04-17-2019 12:11 AM

BNIB Newb. Need basic info - Exhaust/Turbo Brake
Hello all.

2nd RQUEST for some help...??
...or is this TOP SECRET Information...?

2006 LBZ - DSP5 - EFI Live tunes loaded by an AM dealer.

I was told at the time that the Turbo / Exhaust "brake" feature commonly found in Med Duty trucks was "turned" on. I think they were blowing smoke up my (_i_).

I've gone ahead and ordered a OBDII to USB cable....(at least I believe I need one.?) and I simply want to see if I can read (only) and see if indeed it is enacted.

I am aware of the std DIY whereby one can access ECM Connector C2 - add a pin to I believe, Pin 53 - to toggle switch - to Gnd. Also adding pin to PIN 11 to Gnd for illumination as to when said Brake is activated....But would rather not go through all the BS of that mod.

I figured I would come here first to see if there was a way to first find out if it was actually enabled via EFI..and if not, to learn how to do so. I do believe that I will need to know the version # of EFI used to flash my ECM so as to at least talk to my ECM...just not sure how to find that info.?

Pls be specific wth Clear instruction as to what I need or need not to do.
I'm Not a mind reader...lol..! :D

Cheers, &
Much thanx in advanz.

steakman 04-21-2019 09:26 PM

What...? so nobody knows..ANYthing.?

Can i or Can I NOT find out whether this feature is enabled.?

Will I, should I go ahead and use the manual Method of adding a set of PINS to enable the same Feature the Medium Duty truk have as a Std "option" by Using the PINs noted in the above post have issues..?

I'm thinking that NO ONE Knows.

OK - FINE..!! :cool: So i'm going to do said MOD and see what the heck happens. Trailer Season is upon us up here in Canuckistan and I'd much prefer to slow down with the help of this feature on 5 mile long 6% grades pulling 12,500 lbs while driving in the BC Rockies.:D


Mikey52 04-21-2019 09:31 PM

You might try over at the duramax forum. Iíve see some discussions there.

306LBZ 06-25-2019 11:26 AM

Well steakman. I'm no help either. But I see your finding out what I've been realizing as of late after coming back to the forums recently after a long hiatus. They ain't what they used to be. Sorry wish I could help

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