EFI Turbo brake question - Diesel Place : Chevrolet and GMC Diesel Truck Forums
 
Home Forum Market Place Garage Tuning Library DTC Tool Register Vendors
Go Back   Diesel Place : Chevrolet and GMC Diesel Truck Forums > Power, Performance & Tuning > EFILive Tuning Software
Register FAQ Forum Rules My Replies My Threads Mark Forums Read Advertise

EFILive Tuning Software Discuss custom tuning & data logging the LB7, LLY, LBZ & LMM Duramax engines as well as the Allison transmission with EFILive software.

DieselPlace.com is the premier Duramax Diesel Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools
Old 12-27-2016, 05:00 PM   #1 (permalink)
rmoore0852
Diesel Apprentice
 
Join Date: Apr 2012
Location: Midland, TX
Posts: 313
iTrader Score: 0 reviews

EFI Turbo brake question

Hey everyone, need a quick question answered about the exhaust brake in EFI. Truck is a 2006 LBZ with mods in signature. I am looking at EFI through ATP. Just talked to them and am now a little confused about the turbo braking.


If I remember right, the factory turbo brakes engage after the brake pedal is pressed, right??


After speaking with ATP, their turbo brake feature activates whenever throttle is at 0%, irregardless of the brake pedal. I live in Texas, and pull regularly through rolling hills, but very rarely in mountainous areas. I have seriously only really needed the turbo brake a handful of times. I like the fact that on our rolling hills the throttle goes to 0, but the truck basically maintains speed. Now, the RPM's are sitting about 1900-2000, so I understand that the turbo brake won't have as much effect as if it was revved higher.


Sorry to be so convoluted, trying to explain my concerns. I don't want the turbo brake to engage every time the truck is coasting down a hill, then it slow me to the point that I have to hit the throttle to "disengage" the turbo brake, then get off the throttle just to have it engage again.


Is this even an issue? Am I overthinking this?? Need a little advice fairly quickly, I need to order in the next few days.

__________________
2006 2500HD LBZ CCSB 4x4 178k miles, EFILive by ATP, 265/75/16 BFGs, Nicktane adapter w/2 micron CAT filter, Bilstein 5100's, Diamond Eye cat delete, MBRP downpipe, MBRP 4" exhaust with muffler, LML exhaust manifold and heat shield, EDGE Insight CTS, RedHead Steering gearbox, Demco Autoslide 18k hitch, ARP head studs and rod bolts, Transgo Jr with Transynd, MA pump rub kit and transfer case back half, MA transfer case brace, Kennedy single lift pump

Last edited by rmoore0852; 12-27-2016 at 05:01 PM.
Offline  
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 12-27-2016, 09:31 PM   #2 (permalink)
rmoore0852
Diesel Apprentice
 
Join Date: Apr 2012
Location: Midland, TX
Posts: 313
iTrader Score: 0 reviews

Not to muddy the waters any further, but Texas is flat and I DO tow on cruise control quite a bit. The accelerator pedal position is at 0% while towing on cruise. If the EFI looks for 0% throttle to activate the turbo brake, how will that work while towing on cc????

__________________
2006 2500HD LBZ CCSB 4x4 178k miles, EFILive by ATP, 265/75/16 BFGs, Nicktane adapter w/2 micron CAT filter, Bilstein 5100's, Diamond Eye cat delete, MBRP downpipe, MBRP 4" exhaust with muffler, LML exhaust manifold and heat shield, EDGE Insight CTS, RedHead Steering gearbox, Demco Autoslide 18k hitch, ARP head studs and rod bolts, Transgo Jr with Transynd, MA pump rub kit and transfer case back half, MA transfer case brace, Kennedy single lift pump
Offline   Reply With Quote Quick reply to this message
Old 12-30-2016, 01:40 PM   #3 (permalink)
dmaxxrus
Clutch
 
Join Date: Feb 2011
Posts: 74
iTrader Score: 0 reviews

Turbo brake works by closing the vanes inside the turbo. Just because you have cruise control engaged and the pedal isn't actually pressed doesn't mean your throttle percent is zero. This just means the vehicle is managing throttle position for you based on variables to maintain the user set speed.

Also, it works well for towing in any condition. When you take your foot off the pedal, (no cruise control set!) the vanes are usually programmed to be in the 90-99 percent range. Once you hit roughly 1000rpms the vanes will open back up and you will hear the typical rumble it usually makes around idle speeds.

Its not like you take your foot off the throttle and it feels like someone is slamming the brakes. Its more like you're in a standard vehicle and slow the vehicle down using downshifts. If you want to coast done a hill, all you need to do is keep your foot on the pedal a touch.

They can adjust the vane position in the tunes. If its too harsh just have them turn the percentage down.
Offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 12-30-2016, 03:21 PM   #4 (permalink)
tomcookpsu
Heat Sink
 
Join Date: Jul 2016
Posts: 12
iTrader Score: 0 reviews

I have the EFILive tunes on my 2005 2500HD. This is only general information for you since I have a 6 speed manual transmission and it may be different with auto trans but my turbobraking kicks in at 0 throttle and engine RPM's above 1500. So cruising down a small hill at idle won't affect anything. But if the hill gets steep enough for the engine to get to 1500 rpm you will feel it brake.
PS - I LOVE IT !
Read my blog at
tomsgreatadventure.blogspot.com
__________________
Tom Cook
2005 2500HD Duramax, 6 speed ZF manual, Extended cab, 8' bed with Lear topper. Purchased in July 2016 with 20,000 miles on it.
Offline   Reply With Quote Quick reply to this message
Old 12-31-2016, 04:10 PM   #5 (permalink)
rmoore0852
Diesel Apprentice
 
Join Date: Apr 2012
Location: Midland, TX
Posts: 313
iTrader Score: 0 reviews

Thanks for the replies. I actually ordered from ATP a couple days ago, now just waiting on UPS to deliver. After stressing about this for a while I finally just threw my hands up and ordered their cookie cutter package. I figured 1- they do this for a living and ought to know what they are doing, and 2 - they assured me that if there is anything about the tunes that I don't like that a quick email can have them tweak the tunes and email them back to me.

Now looking forward to getting the box and having some good weather to put it all in.
__________________
2006 2500HD LBZ CCSB 4x4 178k miles, EFILive by ATP, 265/75/16 BFGs, Nicktane adapter w/2 micron CAT filter, Bilstein 5100's, Diamond Eye cat delete, MBRP downpipe, MBRP 4" exhaust with muffler, LML exhaust manifold and heat shield, EDGE Insight CTS, RedHead Steering gearbox, Demco Autoslide 18k hitch, ARP head studs and rod bolts, Transgo Jr with Transynd, MA pump rub kit and transfer case back half, MA transfer case brace, Kennedy single lift pump
Offline   Reply With Quote Quick reply to this message
Old 01-01-2017, 08:15 PM   #6 (permalink)
wh20crazy
Clutch
 
wh20crazy's Avatar
 
Join Date: Dec 2015
Location: Roanoke Rapids
Posts: 72
iTrader Score: 0 reviews

You're gonna love it! Turbo brake only works when in one of the tow tunes, tow/haul button pushed & no throttle (cruise off & coasting). If you're on a tow tune & don't want the brake, just click the tow/haul off. I seldom pull anything, but really like the turbo brake in traffic & when getting off the interstate. I really want to get this thing to the mountains.
Offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Diesel Place : Chevrolet and GMC Diesel Truck Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

PLEASE READ! You must check your email inbox for the confirmation link to complete registration. Please check your spam box if you do not see the email in your inbox.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in


Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
ABS Light ronjhall Medium Duty Trucks 38 07-24-2018 06:10 AM
Turbo brake on edge evolution #25002 screaminjlew Third Generation Duramax Electronics/Tuners 8 10-21-2016 06:30 PM
Rusted Brake Lines - NHTSA minnow Drivetrain - 2001 - 2010 35 09-29-2016 07:02 PM
Brake caliper code where? pinne65 6.2L Diesel Engine 11 07-14-2016 08:39 PM
please help turbo question vitucc 6.5L Diesel Engine 6 03-10-2016 06:47 PM


All times are GMT -4. The time now is 05:53 AM.


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Shoutbox provided by vBShout v6.2.1 (Lite) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
© AutoGuide