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Duramax 6600 Welcome to the Internet's first Duramax 6600 diesel discussion forum for the LB7, LLY, LBZ, LMM, LML, LGH & L5P RPO code engines. Tips on performance, fuel economy, troubleshooting and more.

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  #31  
Old 03-25-2019, 05:20 PM
DieselDavy DieselDavy is offline
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Awesome Rich!
Safe Travels!
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  #32  
Old 03-26-2019, 12:07 PM
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More Power More Power is offline
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Thanks for keeping us up to date. P0087 has been a problem for lots of folks.

Jim
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  #33  
Old 06-24-2019, 05:13 AM
Paul Clancy Paul Clancy is offline
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Default JK tune solution sounds good

Hi Rich,
I am considering just what you've done with my 09 lmm -(90,000miles- occasional change filter p0087 limp on grades in 100deg heat) and have a few questions. I know you left your dpf in place(as I most likely will) and there were some regeneration issues - was that solved in tuning by John or where is that at?I have already added a fass 165 pump and replaced the filter head and lines there - otherwise stock well maintained truck. Now thinking JKs tune/ecm to keep me out of limp and get another 100k before injectors. Also edge cts2 for watching regens and other temps. Anything I'm missing?

Thanks Rich,
Paul

Last edited by Paul Clancy; 06-24-2019 at 05:56 AM.
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  #34  
Old 06-25-2019, 04:02 AM
richp richp is online now
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Hi Paul,

I probably was over fixated on watching the regens at first. The Edge was a novelty at the time, and I watched every parameter closely, trying to learn more about what the engine was doing. Regens have absolutely been a non factor in the long run.

And aside from that one code last year, on a ferociusly hot day on a long hill pulling a 12+k# fiver, the original problem has simply gone away. Just hit 140k miles this week, and very happy I did it. John's a hero!

I do have some building questions about whether it's time for a new one. But that's another post...

I think you got it covered. Good luck.

Rich
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  #35  
Old 06-25-2019, 05:19 AM
Paul Clancy Paul Clancy is offline
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Thanks for that info Rich. When your truck coded that one time on the hottest tow did it limp or let you carry on? Thats my whole worry is being stuck on the side of the road with no shoulder and family on board. Also if the dpf is working I'm pretty well good to order.
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  #36  
Old 06-25-2019, 09:02 AM
richp richp is online now
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Quote:
Originally Posted by Paul Clancy View Post
Thanks for that info Rich. When your truck coded that one time on the hottest tow did it limp or let you carry on? Thats my whole worry is being stuck on the side of the road with no shoulder and family on board. Also if the dpf is working I'm pretty well good to order.
Hi Paul,

It threw the code and I cleared it on the fly with the Edge, while towing up a big interstate hill. Never happened again.

I know my other move might have been to chop the afterburner, but I am not wired to go further away from stock. I think when the time comes to sell or trade up, being close to stock will help a bit on value for many prospective buyers -- if only to demonstrate I've not been hot rodding. Color me old school and conservative ..

Rich
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  #37  
Old 07-03-2019, 05:25 AM
Paul Clancy Paul Clancy is offline
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Kennedy ecm and edge insight in transit.

Thanks Rich (and John).
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  #38  
Old 07-16-2019, 06:47 AM
Paul Clancy Paul Clancy is offline
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Got the edge cts2 and Kennedy ecm installed. First start did have change fuel filter on dic and oil life was down to 11per cent. Since both were fresh I reset olm and ff life. No cel, no p0087 but stored codes for def sensors and maf which I've not had previous. Cleared those. Emailed John and he said those were normal for first start. Went for a spirited drive and all was well - truck seems smoother with more pep for sure. Won't be towing for a while but looking forward to it.
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  #39  
Old 07-16-2019, 06:54 AM
Kennedy Kennedy is offline
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Quote:
Originally Posted by Paul Clancy View Post
Got the edge cts2 and Kennedy ecm installed. First start did have change fuel filter on dic and oil life was down to 11per cent. Since both were fresh I reset olm and ff life. No cel, no p0087 but stored codes for def sensors and maf which I've not had previous. Cleared those. Emailed John and he said those were normal for first start. Went for a spirited drive and all was well - truck seems smoother with more pep for sure. Won't be towing for a while but looking forward to it.

When we do an ECM swap the maintenance reminder percentages come over from the donor truck and need to be reset. DTC's should be automatically cleared after the ECM is flashed, but sometimes this is not the case. Drive it and see what it does. It may hit a point where it's unhappy about regen frequency to low, but it should work through that.
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  #40  
Old 07-16-2019, 07:05 PM
Paul Clancy Paul Clancy is offline
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All makes perfect sense and was what I was figuring was happening. Not pulling to the Oregon Coast until the fall but may have to do a test run for fun before that. We live at the base of a major pass that climbs to 5700ft 6.5% grade for 20 miles. Should be a good test in the heat.

Thanks John
Paul
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