TheBuiltCmax
Region: US
Monday 07 September 2026 18:32:59 GMT
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wicky_wbm :
Did it work yes, there’s hundreds of documented cases of them not working.
2026-09-07 18:50:02
24
dustinzynda :
I have a stupid question, you have the stock cp4 and exergy system saver metering valve. Truck shuts down p128e could you in theory replace the the metering valve with another exergy to get home and replace the pump then. Does the pump actually stop working or is it just wearing down? Just saying truck quits it be easier to just replace that metering valve $300 keep in you truck just in case then waiting on a wrecker and paying to have your truck hauled. I'm asking for a friend 🤣
2026-09-07 19:57:26
1
Dhays_88 :
Does the fuel saver work on the 3.0?
2026-09-07 19:35:54
5
iamswthomas :
At 535000 miles on my LML, is the fuel saver a good idea? Difficult to install?
2026-09-08 19:02:35
4
Louie Davino :
xp they make the fuel system saver for 6.7 Cummins? my 2020 was CP3 swapped under the recall but wouldn't mind the peace of mind having that in there just incase
2026-09-09 00:06:38
0
Jacob The GM Man :
First thing I did when I got my lml
2026-09-07 20:23:18
1
Jram :
Drives me nuts how all these fanboy’s just say get a dcr just swap a dcr I’ve owned 2 6.7s with cp4s and over 500k between the 2 of them no issues it’s just like anything things break but ppl pushing 3100 dollar swap on a truck with say 100k that ran fine is in insane with you can just replace the cp4 for 1200
2026-09-25 00:47:42
1
Vincent Mash :
Had one on my 16 and when the pump blew I checked the rails and they were full of metal
2026-09-08 18:23:56
2
M A T T • C A R R :
Idk every instance I have seen in the groups, no they don’t.
2026-09-07 23:11:54
2
Luigiman :
With that engine having that many miles did it have a lift pump? I worked at a dealership and the cp4 would always go out at 100k. Or is it fuel additives?
2026-09-12 15:26:23
1
Lopin_K20 :
If your already pulling the cp4 it’s litterly a PCV reroute it’s not hard at all I’m not a diesel mechanic and did my cp3 conversion in my garage in a week lol did the whole EGR delete myself just with fleece performance video and reading forums it’s not hard
2026-09-10 19:05:59
0
josephscytko :
buy a DCR pump...still have to drop the fuel tank the system saver don't catch return fuel..
2026-09-10 04:50:07
2
Bradley Coe :
What fuel additive do you recommend to keep the CP4 happy and get 400k+ out of it
2026-09-09 17:19:06
2
daveyknecht :
Gonna make me install them on the fleet I service now
2026-09-07 23:39:01
1
TheBossXVI :
fuck yeah 😎 I did the same one from wcfab website and I been doing delete and other shit then doing a cp3 lol
2026-09-08 02:08:17
1
184 conversion :
Mddp fuel system saved is good option? I had a 2012 LGH duramax, thanks for your advice
2026-09-08 04:33:32
3
Anthony :
if only I know about this before I did a cp3 conversion! my cp4 ran great until I decided to pull it off
2026-09-07 19:28:27
1
paulschoen559 :
Awesome!
2026-09-07 18:51:45
1
PrairiePerformanceCalibrations :
@TheBuiltCmax I’ve dealt with all sorts of weird shit doing the same thing you did. Beat my head against a wall for days lol. Good on ya bro keep it up.
2026-09-07 22:45:19
1
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