Hit the track today in my "new to me Lmm" something is off - Chevy and GMC Duramax Diesel Forum
DuramaxForum.com is the premier Chevy and GMC Duramax Diesel Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 11-25-2012, 03:27 PM   eBay Motors  #1 (permalink)
Junior Member
 
Dirtywhitelmm's Avatar
 
Join Date: Oct 2012
Location: lincolnton Ga
Posts: 188
Hit the track today in my "new to me Lmm" something is off

First off mods are mpi stock over s480, 100hp ddps, 120 over II double dragon pump, ppe up pipes and manifolds, ad 165,Sdp intercooler pipes, cognito 4 inch lift," all the way down to the bump stops" cognito braces and tie rods, traction bars, 305/55 20 cooper zeons, Ppe stage 5 trans- precision ml converter EFI tuned by Rob
Ok sorry haven't updated my sig
Anyway on the big tune leaving at 10lbs of boost cut a 1.728 60' ft
1/8 mile 7.915 @ 85.08
1/4 mile 12.548 @ 103

Expected a little more and in my opinion the 1/4 mile mph is way off for the time any opinions on what might be wrong, my guess is rail pressure. Didn't have my v2 to log so I guess it's kind of a shot In the dark because I'm sure y'all will say get rob to check the log but let me know what y'all think
Thanks


Sent from my iPhone using AutoGuide.com Free App
__________________
09 ccsb lmm cognito 4-6, bmfs, MPI TWINS. Double dragon, 100hp ddps, arp studs, track bars, trans built by Trey Fox (blackdirtymax)
Dirtywhitelmm is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 11-25-2012, 03:53 PM   eBay Motors  #2 (permalink)
DuramaxForum Enthusiast
 
mike diesel's Avatar
 
Join Date: Jan 2012
Location: SLC, Utah
Posts: 4,398
Whats your location/altitude? My guess would be that rob has some extremely conservative tuning on it to keep those poor lmm pistons alive. You have alot of fuel and air potential that will easily destroy your stock bottom end.
__________________
05 Dmax/Allison
12.05@113
mike diesel is offline   Reply With Quote Quick reply to this message
Old 11-25-2012, 03:58 PM   eBay Motors  #3 (permalink)
Wide open in neutral
Lifetime Supporting Member
 
WVRigRat08's Avatar
 
Join Date: Feb 2009
Location: Buckhannon,West Virginia
Posts: 5,850
Id rape it just so I had to build it. Im puttin twins on mine(S475 over stock), almost certian Ill trash the rods and have to do surgery again with carillos.
__________________
05' Chevy LT LLY CC/SB Blackout Performance built motor/trans/tuned- Gone

"The Blessed Hellride"-08' GMC Sierra SLT CC/SB, 12,000 miles!
Engine-EFI Live, blocked, re routed, air box mod, 3" downpipe, raptor 100 lift pump, amsoil
Trans- Transgo jr. and deep pan
Exhaust- 4" MBRP straight pipe, 5" RBP tip
Suspension- leveled, PAC Brake air bags
Other- Fab fours winch bumper, large fender mod, 17x9 Fuel kranks, 35" Cooper STT's, limo tint, 100 gal. Fuel tank, tool box.
WVRigRat08 is offline   Reply With Quote Quick reply to this message
Old 11-25-2012, 04:02 PM   eBay Motors  #4 (permalink)
Junior Member
 
Dirtywhitelmm's Avatar
 
Join Date: Oct 2012
Location: lincolnton Ga
Posts: 188
The truck was tuned for the first owner In Ohio I'm in eastern Georgia 330 to 360 above sea level


Sent from my iPhone using AutoGuide.com Free App
__________________
09 ccsb lmm cognito 4-6, bmfs, MPI TWINS. Double dragon, 100hp ddps, arp studs, track bars, trans built by Trey Fox (blackdirtymax)
Dirtywhitelmm is offline   Reply With Quote Quick reply to this message
Old 11-25-2012, 04:03 PM   eBay Motors  #5 (permalink)
Junior Member
 
Dirtywhitelmm's Avatar
 
Join Date: Oct 2012
Location: lincolnton Ga
Posts: 188
Quote:
Originally Posted by mike diesel View Post
Whats your location/altitude? My guess would be that rob has some extremely conservative tuning on it to keep those poor lmm pistons alive. You have alot of fuel and air potential that will easily destroy your stock bottom end.
And yeah i was told it was detuned for the pistons I just didn't think I would see so much of a drop I'm mph on the big end


Sent from my iPhone using AutoGuide.com Free App
__________________
09 ccsb lmm cognito 4-6, bmfs, MPI TWINS. Double dragon, 100hp ddps, arp studs, track bars, trans built by Trey Fox (blackdirtymax)
Dirtywhitelmm is offline   Reply With Quote Quick reply to this message
Old 11-25-2012, 04:05 PM   eBay Motors  #6 (permalink)
Meyer Performance
 
lutzjk913's Avatar
 
Join Date: Oct 2008
Location: groveport, ohio
Posts: 8,411
Is this nick's old truck?
__________________
Joe
2008 CCLB LT2 DURAMAX LMM
Was once stock but has been 14.46 @ 93.03
The life of my truck
Pics of my truck
MBRP, Diamond Eye, EFI live by Kory, FASS, S&B, Autometer, DHD, Magnaflow, ProFab, Banks, Edge, Cognito, Fuel, Nitto

Thanks to Tyler @ www.MeyerPerformance.com 812-344-4421
lutzjk913 is offline   Reply With Quote Quick reply to this message
Old 11-25-2012, 04:08 PM   eBay Motors  #7 (permalink)
Banned
 
Join Date: Nov 2008
Location: Arizona
Posts: 17,267
Why do you think its rail pressure? Do you have a log of the run?

Somethings wrong, I ran 107mph on stock LBZ.
Hondarider552 is offline   Reply With Quote Quick reply to this message
Old 11-25-2012, 04:12 PM   eBay Motors  #8 (permalink)
Meyer Performance
 
lutzjk913's Avatar
 
Join Date: Oct 2008
Location: groveport, ohio
Posts: 8,411
Did it feel like it layed over in the higher gears? Maybe a converter problem.
__________________
Joe
2008 CCLB LT2 DURAMAX LMM
Was once stock but has been 14.46 @ 93.03
The life of my truck
Pics of my truck
MBRP, Diamond Eye, EFI live by Kory, FASS, S&B, Autometer, DHD, Magnaflow, ProFab, Banks, Edge, Cognito, Fuel, Nitto

Thanks to Tyler @ www.MeyerPerformance.com 812-344-4421
lutzjk913 is offline   Reply With Quote Quick reply to this message
Old 11-25-2012, 04:22 PM   eBay Motors  #9 (permalink)
Senior Member
 
plowboy_lbz's Avatar
 
Join Date: Sep 2012
Posts: 790
you had a good 60 ft time for having a lift kit. i would think that your tuning is what is holding your back. ever been on a dyno?? i'm not a fan of II pumps, but it should be able to keep up. you have more than enough potential to blow your shit up!!
__________________
07 lbz ccsb
EPR s475 o/stock, floor-it stg II cp3, Kory tuned, suncoast, tow-flows, Y bridge, insight, EXAXT,
cognito uca's, trac bars, AD II 165, banks IC, blacked out grill, cowl hood, tough country bumpers
Dyno - 582hp 1209tq - SJD, 561hp 1247tq floor-it-diesel (stock turbo & inj.)
Track - 12.82 @ 105.5 mph @7300lbs 1.82 60 ft

07 lbz rclb

Kory tuned, RDL egr delete, banks IC, insight,
bd lift pump w/remote WS, nicktane, ranch hand front
plowboy_lbz is offline   Reply With Quote Quick reply to this message
Old 11-25-2012, 04:25 PM   eBay Motors  #10 (permalink)
Wide open in neutral
Lifetime Supporting Member
 
WVRigRat08's Avatar
 
Join Date: Feb 2009
Location: Buckhannon,West Virginia
Posts: 5,850
Big tires will kill it some too. Mines a horse when unloaded but still not a fast as a truck with less mods and smaller tires. I'd go back to 33's but then I'd be wound for sound. you def. benefit for smaller tires with the 6 speed.
__________________
05' Chevy LT LLY CC/SB Blackout Performance built motor/trans/tuned- Gone

"The Blessed Hellride"-08' GMC Sierra SLT CC/SB, 12,000 miles!
Engine-EFI Live, blocked, re routed, air box mod, 3" downpipe, raptor 100 lift pump, amsoil
Trans- Transgo jr. and deep pan
Exhaust- 4" MBRP straight pipe, 5" RBP tip
Suspension- leveled, PAC Brake air bags
Other- Fab fours winch bumper, large fender mod, 17x9 Fuel kranks, 35" Cooper STT's, limo tint, 100 gal. Fuel tank, tool box.
WVRigRat08 is 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 Chevy and GMC Duramax Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
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

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

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



All times are GMT -7. The time now is 11:17 AM.



Powered by vBulletin® Copyright ©2000 - 2014, vBulletin Solutions, Inc.

Search Engine Friendly URLs by vBSEO 3.3.2