I have a 2012 LML Duramax with 322,000 miles. I did the CP3 conversion at about 175,000. Installed a FASS 165 lift pump. I deleted it and has a CAI, programmer(towing tune) and 5 inch turbo back exhaust. I also changed over to Catepillar oil filter, fuel filter and water separator. This thing runs like a champ, no issues. It's my daily driver.

I have been doing research about the LML trucks so this helped a lot so thank you

Have a 2016 Duramax with 41,000 miles. Use it mostly to pull our 5th wheel. I procrastinated for several years about the CP3 conversion. I did put an Airdog lift pump on approx. 1 1/2 years ago and always run additive. I have followed all the bad reports about the CP4 and quite frankly it really concerned me. When my extended warranty expired I decided to bite the bullet and do the conversion. Being a retired aircraft mechanic I felt that even though I had never done this conversion before that I would give it a go. In July of 2023 I completed the job using and S&S CP3 kit. This was their latest version with a new block for the 9th injector and a port for the temp. sensor. Per kit instructions I did a regen on the DPF system and so far I have put around 1000 miles and pulled our 5th wheel with no issues. I did this for peace of mind as I dreaded the thought of a complete failure on the road especially pulling the trailer.

Doing a CP3 conversion at 180,000 right now. Haven’t had any issues with the Cp4 but I’m not gonna wait around for them.

Glad your building this truck, I’m looking forward to learning the entire platform

2013 Stock with 465,876 with CP4 still going strong. Change your filters and use a fuel additive. Have done this day one and no issues. Will go to CP3 when the motor goes for a rebuild shortly.

Just had a BD cp3 conversion installed on my 2016. The truck had 85,000 miles. The cp4 didn’t fail, just wanted to make sure the truck stays reliable.

Lift pump is a must! I agree 👍 I installed a Air Dog 4G 165gph in my Lmm and have tried to advise my brother in law (lml owner) and another friend who has spent 10,000 on new injectors and 7,000 on new fuel rails on his Lmm and still won't consider a lift pump! Same thing with my brother in law! Tho he's on borrowed time with his CP4!? Great advice Brother! RDS Turbo nice upgrades! 🛠🔧☠️🤘🏻💨💨🏁

I needed a new water pump. I have had my cp3 conversion sitting in my office for other 3 years. Since I needed to replace my water pump I decided to go ahead and do my conversion..... 330k miles, original stock cp4 pump, original stock injectors, installed my lift pump about 100k ago. Had zero metal shavings but did have pieces of rubber and plastic on the screen. Blows my mind it was still running without an obvious issue.

I just converted mine myself. 2015.5 with 234,000 miles. Took me about 8 total hours of labor, but shops book 12.. saved thousands, and it runs great. Added peace of mind! Used the Lincoln Diesel Specialties kit

2014. 102,000 and I just did the CP3 Conversion. Among some other fun stuff...Finally. Runs much better now! I don't know why I waited so long. Mine was strictly preventative maintenance since I just hit 100,000 miles. Now a couple weeks prior, a relative of my wife had his CP4 on his 2016 self destruct. So, that was the final wake up call and my wife really started worrying so we pulled the trigger.

Does your buddy with the silver LML have a channel ? I want to see more of his truck

Just bought a 2016 with 145000 miles. I don't know what previous owners did but i run edt every tank and no lift pump yet no delete or tune yet

My 16 has 145000 on it. I’ve had a fass on it since I bought it in 2019 with 55,000 on it. I’ve always ran an additive whether it be hotshots or diesel power service.

I just bought a lml and want a conversion but havnt gotten around to doing it. But it runs good still with 250000 miles

This is off to pick of that video but would you say it’s worth replacing the Down pipe of a deleted 2019 L5p?

I bought 2013, 2500 with 70,000 miles and replaced the CP four with the CP three pump. A preventative maintenance procedure. I also added an air dog system to the truck. The guy who did the work told me now the truck is now bulletproof. So far so good, 5000 miles into the New fuel system.

does the CP4 fuel pressure regulator go back on a CP3 conversion or does ie use a different regulator ?

Which cp3 pump did you go with? I was looking at S&S. They have different models. If you’re deleting I’m assuming there’s no need to pay extra for the pre tuned pump, your tuner should take care of that right?

2011 lml 150,000 cp4. I'm interested in doing a lift pump though just to. Just out of curiosity if you're familiar with it does installing a lift pump set off a check engine light and do you have to unplug the electrical if there is some on the CP4