LML CP3 Conversion - Chevy and GMC Duramax Diesel Forum
11-16 LML Performance Parts Discussion Discussion of Performance Parts For the 2011 to 2016 LML Duramax Trucks No Advertising

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post #1 of 10 (permalink) Old 05-17-2019, 12:02 PM Thread Starter
 
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LML CP3 Conversion

Hello, I am need not some advice. I have searched and searched and searched and couldn't find the answers that I feel would help me make the correct decision. I have a 13 lml that's tuned and deleted and want to do the CP3 conversion. I am trying to decide between a Cp3 or 10mm Cp3. Reliability is main reason for the conversion since my warranty has expired but would like to see some performance benefits. The questions I have:
1. What is the max HP a standard Cp3 can make in an LML?
2. Would simply changing the Cp3 (not adding turbo or anything else) increase performance?
3. If the Cp3 does increase performance, would I see any additional increase by going with a 10mm without changing anything else?
The only additional wish list items I have for the motor is a drop in (stealth) turbo at some pint in time. I appreciate any insight on this!
Thanks!!!
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post #2 of 10 (permalink) Old 05-17-2019, 01:47 PM
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Quote:
Originally Posted by bostonhoff View Post
Hello, I am need not some advice. I have searched and searched and searched and couldn't find the answers that I feel would help me make the correct decision. I have a 13 lml that's tuned and deleted and want to do the CP3 conversion. I am trying to decide between a Cp3 or 10mm Cp3. Reliability is main reason for the conversion since my warranty has expired but would like to see some performance benefits. The questions I have:

1. What is the max HP a standard Cp3 can make in an LML?

2. Would simply changing the Cp3 (not adding turbo or anything else) increase performance?

3. If the Cp3 does increase performance, would I see any additional increase by going with a 10mm without changing anything else?

The only additional wish list items I have for the motor is a drop in (stealth) turbo at some pint in time. I appreciate any insight on this!

Thanks!!!
This is what I would do if I was in your shoes.
http://www.sdptwins.com/exergy-sport...onversion-kit/
Give Scott a call and he can answer all the questions you have pertaining to your needs as far as reliability and performance.

Sent from my VS988 using Tapatalk
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S472 SX-E.87/1.0ar sitting on a Wagler street intake W/ a twisted pedestal
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Special thanks to Scott with Screaming Diesel Performance
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post #3 of 10 (permalink) Old 05-17-2019, 04:26 PM
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Stock lbz or lmm cp3 and sportsman will do mid 600s depending on tuner and injectors. A 10mm will do 800s. So if you have that power goal in mind go with a 10mm. It doesnt sound like it so get a stock, cp3k or sportsman pump. All the cp3k and sportsman do is fuel past 3200 rpm which is where a stock cp3 falls off.
Rethink your stealth turbo. They're shit. Know plenty of guys who have destroyed them in less than 10k miles and know a guy who just put one on and is already pushing oil. Go with a modded vgt from mark at danvile performance. Best vgts they make hands down no questions about it.
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My name is Nic
2012 qcsb 6.8L cummins, Big single, Big fuel, 48re swapped,
2011 GMC Sierra 2500 CCSB LML,
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THANKS TO, SDP, WCFAB, LDS, DHD, FREEDOM RACING ENGINES, GDP, EXERGY, S&S, ATS, FLEECE, DEALER FOR UNLEASHED TUNING.
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post #4 of 10 (permalink) Old 05-17-2019, 07:24 PM
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Quote:
Originally Posted by SilverGorillaLML View Post
Stock lbz or lmm cp3 and sportsman will do mid 600s depending on tuner and injectors. A 10mm will do 800s. So if you have that power goal in mind go with a 10mm. It doesnt sound like it so get a stock, cp3k or sportsman pump. All the cp3k and sportsman do is fuel past 3200 rpm which is where a stock cp3 falls off.
Rethink your stealth turbo. They're shit. Know plenty of guys who have destroyed them in less than 10k miles and know a guy who just put one on and is already pushing oil. Go with a modded vgt from mark at danvile performance. Best vgts they make hands down no questions about it.
I agree also with Nic on the vgt turbos from Danville.

Sent from my VS988 using Tapatalk

2006 Victory Red CCLB LT3 LBZ
Tuned by Blake Crenshaw
SDP Fully Built Trans w/ Billet Goerend G Converter
S472 SX-E.87/1.0ar sitting on a Wagler street intake W/ a twisted pedestal
Stock Sticks
Special thanks to Scott with Screaming Diesel Performance
Blake with Unleashed Duramax tuning
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post #5 of 10 (permalink) Old 05-17-2019, 07:35 PM
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I agree also with Nic on the vgt turbos from Danville.

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Well of course you do russ I'm always right duh
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My name is Nic
2012 qcsb 6.8L cummins, Big single, Big fuel, 48re swapped,
2011 GMC Sierra 2500 CCSB LML,
BIG s400, fuel, supporting mods
THANKS TO, SDP, WCFAB, LDS, DHD, FREEDOM RACING ENGINES, GDP, EXERGY, S&S, ATS, FLEECE, DEALER FOR UNLEASHED TUNING.
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post #6 of 10 (permalink) Old 05-18-2019, 01:20 PM Thread Starter
 
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Thank for the reply’s I really appreciate the insight and feedback. I will most definitely be looking at the Danville! Is a cp3 sufficient for that turbo or is a 10mm. Thanks!
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post #7 of 10 (permalink) Old 05-18-2019, 04:10 PM
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Quote:
Originally Posted by bostonhoff View Post
Thank for the replyís I really appreciate the insight and feedback. I will most definitely be looking at the Danville! Is a cp3 sufficient for that turbo or is a 10mm. Thanks!
Like Russ said earlier, I think the Exergy Sportsman with the SDP kit will work perfect for what you have now and when you put a Danville turbo in later.

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post #8 of 10 (permalink) Old 05-18-2019, 04:12 PM
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Originally Posted by bostonhoff View Post
Thank for the replyís I really appreciate the insight and feedback. I will most definitely be looking at the Danville! Is a cp3 sufficient for that turbo or is a 10mm. Thanks!
Stock cp3 or sportsman will be fine

My name is Nic
2012 qcsb 6.8L cummins, Big single, Big fuel, 48re swapped,
2011 GMC Sierra 2500 CCSB LML,
BIG s400, fuel, supporting mods
THANKS TO, SDP, WCFAB, LDS, DHD, FREEDOM RACING ENGINES, GDP, EXERGY, S&S, ATS, FLEECE, DEALER FOR UNLEASHED TUNING.
SilverGorillaLML is online now  
post #9 of 10 (permalink) Old 05-19-2019, 08:24 PM
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Just did the cp3 conversion on my LML. Along with Danville’s 65mm. I went with Fleeces PowerFlo 750 10mm pump. So far so good. 👍🏻
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White 2012 2500HD LTZ Crew cab Short bed, 5" Mbrp W/O Muffler down pipe back,PPEI by Kory Willis,Rhino Lining,Diamond Eye DownPipe,FASS Titnium Series 165gph, Wehrli Custom Fab Intake bundle EGR Delete, PCV-reroute

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post #10 of 10 (permalink) Old 05-19-2019, 08:27 PM
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If you plan on doing the cp3 yourself there’s a thread on here from a few years back that helped me out with the installation. Also truck trend did a write up as well. Both were very informative.

White 2012 2500HD LTZ Crew cab Short bed, 5" Mbrp W/O Muffler down pipe back,PPEI by Kory Willis,Rhino Lining,Diamond Eye DownPipe,FASS Titnium Series 165gph, Wehrli Custom Fab Intake bundle EGR Delete, PCV-reroute

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