Duramax Diesels Forum Truck of the Week
  #16  
Old 11-10-2017, 05:13 PM
tsd_billy tsd_billy is offline
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yeah theychanged in 2000 to the 5.3 ls
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  #17  
Old 11-10-2017, 05:14 PM
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I won't be able to look at it for a few hours.
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  #18  
Old 11-10-2017, 05:18 PM
tsd_billy tsd_billy is offline
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Originally Posted by PureHybrid View Post
I won't be able to look at it for a few hours.
that's okay anyone who can is appreciated. just trying to make it snappy off the line

current mods include
small cam 300 lift range
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  #19  
Old 11-11-2017, 07:42 PM
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Your file wouldn't open. I updated my software and still nothing?
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04 GMC ECSB LLY - Mix breed trans/SC1056 - Profab - PPE - Kennedy twin pumps/pickup - Danville tuning: 531/944
I can't complain, but sometimes I still do
8.17@84mph 1/8mi
Jesse
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  #20  
Old 11-11-2017, 07:49 PM
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Here's a 5.3 file I've been working on for a buddy. Smaller changes so far, just timing and backed off the cam phaser a bit.
Attached Files
File Type: ctz E38_KaseyMcCoy_5.3_Mod5.ctz (1.81 MB, 13 views)
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04 GMC ECSB LLY - Mix breed trans/SC1056 - Profab - PPE - Kennedy twin pumps/pickup - Danville tuning: 531/944
I can't complain, but sometimes I still do
8.17@84mph 1/8mi
Jesse
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  #21  
Old 11-13-2017, 10:41 PM
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Sorry I can't help I've never touched a 5.7L before.
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  #22  
Old 11-15-2017, 09:50 PM
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The L31 is ancient technology as most anybody who tries to get power out of one does an 0411 PCM swap. Virtually nothing from the newer tune tables will easily translate over as the black box l31 PCM is only a 256mb PCM. There's a few people who tune them, but not many as most abandon them for the 0411 and an 02 van tune.
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  #23  
Old 11-28-2017, 04:40 PM
tsd_billy tsd_billy is offline
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Originally Posted by THEFERMANATOR View Post
The L31 is ancient technology as most anybody who tries to get power out of one does an 0411 PCM swap. Virtually nothing from the newer tune tables will easily translate over as the black box l31 PCM is only a 256mb PCM. There's a few people who tune them, but not many as most abandon them for the 0411 and an 02 van tune.


How do i make the allison style plugs pin into the 0411. This thing is purely just a fun project so nothings out of the question ferm. Thanks for the input
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  #24  
Old 11-28-2017, 07:40 PM
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Search 0411 pcm swap on google, you'll find lots of pages regarding it. The pins in the black box ecm plug get removed, and put into an 0411 pcm plug. The tricky part is getting the correct diagrams for the l31 pcm as GM made small wiring changes each year on them. Once you obtain the correct diagrams, you just swap the pins over 1 at a time. Flash the 0411 pcm with an 02 van tune modified accordingly, and away you go. The only issue I know of is 98+ also require a fuel guage buffer or interface wired in to make the stock fuel guage work.
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  #25  
Old 01-14-2018, 07:14 PM
tsd_billy tsd_billy is offline
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Quote:
Originally Posted by THEFERMANATOR View Post
Search 0411 pcm swap on google, you'll find lots of pages regarding it. The pins in the black box ecm plug get removed, and put into an 0411 pcm plug. The tricky part is getting the correct diagrams for the l31 pcm as GM made small wiring changes each year on them. Once you obtain the correct diagrams, you just swap the pins over 1 at a time. Flash the 0411 pcm with an 02 van tune modified accordingly, and away you go. The only issue I know of is 98+ also require a fuel guage buffer or interface wired in to make the stock fuel guage work.


Sorry i never saw this but Thank You for the info. Im gonna talk to my shop hand who ls swapped his 95 1500 2wd. He might know whereabout i could find everything. Ive started the marine intake swap on it so that might be something i already need.


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  #26  
Old 01-14-2018, 07:42 PM
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get on any gmt400 forum and search for member lextech he has all the diagrams needed to make the re-pining easy. the bulk of it only takes an hour. There is an option in HP tuners for PWM fuel gage to make the gauge work properly. (my gauge was bad from the get go so I have not confirmed this)
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  #27  
Old 01-18-2018, 02:35 PM
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Quote:
Originally Posted by bmc1025 View Post
get on any gmt400 forum and search for member lextech he has all the diagrams needed to make the re-pining easy. the bulk of it only takes an hour. There is an option in HP tuners for PWM fuel gage to make the gauge work properly. (my gauge was bad from the get go so I have not confirmed this)
The fuel guage is 98+ as 96-97 was still hard wired. I know efilive has never seen fit to add in the fuel guage tables despite requests for it. There are other ways around the fuel guage issue for 98+.
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