I read that Bosch changed the design of the CP4 because the parts for it were easier to automate and saved money on the assembly. There was more labor for the CP3 because of the machining process. It saved Bosch millions by dropping the CP3 and going to the CP4.

@MotorsportDiesel

Ай бұрын

Or it made Bosch many more millions, not to mention the additional sales from failed pump replacements. Amazingly the Bosch "over the road" pumps with the same tappet arrangement, utilize a "keyed" tappet to prevent it from rotating in the bore, something the CP4 is missing. Guilt by omission...

thanks for the video

@MotorsportDiesel

8 ай бұрын

Thanks for watching it, Rob.

Commenting for support!!

I like your videos and in depth explanations you give as well as your genuine demeanor. I had a tick develop that didn't go away with kill tests, I adjusted valve lash and went for a test drive at which I ended up having a knock develop with a loss of power that wemt away shortly. A few days prior to that I noticed my CP3 knocking loudly after the engine warmed up. Never noticed any white smoke but i would have a haze on idle at cold starts. Ran a contribution test which shows injector 5, 3 and 2 are weak. Idk whats going on yet but im starting to pull head. Would like to have some 30% overs tested that are on my shelf and maybe send my cp3 out to you for some upgrades. Basically I don't want to put good parts in a dirty system.

@MotorsportDiesel

6 ай бұрын

Sorry I missed your message. If you still need anything, send me an email: motorsportdiesel@hotmail.com

Thanks for the videos, ive been watching most of them, alot of good information ,I really enjoyed the video wherenyou were swapping parts and retesting, particularly the FCA, I rcently replaced my FCA due to a rough idle condition, it seemed to help that..... but also seemed to lose a bit of power any idea why?

@MotorsportDiesel

6 ай бұрын

Did you buy a Chinese counterfeit?

@johnstark3058

6 ай бұрын

Nope....it was a Bosch unit, altleast the box said Bosch anyways, i suppose the part inside could still be counterfeit.

Great info! Do you build cp3 for customers? I would love to send my pump to you to if you do.

@grant_6.7_5th_gen

4 ай бұрын

The end of the video answered my question lol

@danieljones8587

Ай бұрын

​@grant_6.7_5th_gen I know I got all excited in the beginning, too. 😅

To me the ultimate hack is to put a resistor on the rail sensor or get the next mpa size up. It will force the tune to scale up a bit. Then put another resistor on the Map sensor to remove the over boost code and turn the waste gate up to 45psi. These are the mods I have done for a while now. But everyone in the industry shames me for it. I got all the other supporting mods like head studs an air dog over built trans and so on. I believe there is 3 mods you can do to the pump that will make it flow like a a lot better. The supply pump, a spring in the cascade valve, and mod the fca. Not sure where I see that if it was you or someone else. I never tried it as I dont know where to buy parts for these pumps. When it comes to injector testing it seems better to just buy a set the cost difference is too small from my experience. 350 or so each when its all said and done when for 1900 I can get a set of industrials or exergy for 2200 at slightly bigger nozzle size. I guess you can say I watched the whole thing..... I would really like to see a tear down on one these and a good explanation of what does what.

@MotorsportDiesel

8 ай бұрын

I have learned from testing injectors at differing pressures say +/- 20 MPA makes only a slight difference in output, essentially the same as fooling the rail pressure sensor. As for the MAP sensor, it might make a decent difference. What you are doing is essentially what an EDGE EZ or TS MP8 does. As for the mods to the CP3 you have listed, the gain is less than 10% overall, except on the 6.7 pump, it will give a bit more.

@ChannelZeroOne

8 ай бұрын

@@MotorsportDiesel DDP guy seemed overall upset with me for sharing the rail sensor mod. He said it would destroy the injectors real fast. Exergy claimed on a calibrated power vid they tested their injectors to 40,000 psi for 40 hours straight, so I think at 30,000 psi I should be ok. When i seen that vid I knew i had more room to play. I usually install the 220 mpa sensor, and a 240mpa relief. What I have found is the truck is a lot more responsive all around with this mod. I ran a set of 45% industrials since 2018 with no issues. Now I have another truck with a set of exergy 50hp I been running with this mod since march. if I did not feel an obvious difference, i would not consider doing it. I make good money so a $2000 set of injectors to be able to go from 70 to 100 with no effort is worth it to me. The map sensor mod was to fool the pcm so it would not defuel. A product called boost fooler has a 500ohm resistance on one leg. I could pay $100 for. On gas cars I make s a 1uf compactor and a 10k ohm resistor to emulate a properly functioning cat. Anyways thanks for getting back to me. Most people think I am idiot. and I might be one who knows.

@MotorsportDiesel

8 ай бұрын

@@ChannelZeroOne Guess what, we all use the same genuine Bosch Injectors with genuine Bosch parts, whether it is Exergy, Industrial Injection, S&S, or BD, and last of all little 'ol me, all the parts come from the same source. And I am not buying the running at 40,000 psi for 40 continuous hours, maybe with a 124 series injector, but not a 120 series. Also to the re-branders a laser can re-label anything and make it seem special, oh and don't forget the elusive magic wand, that they pretend to wave over their parts. It is nothing more than bigger holes (injectors) or more stroke (pumps), period. All we are, are essentially glorified assemblers (Micron), and high tech drill press operators (EDM). I know the processes and have the machines, but I don't drive by self induced pride, I am a realist and a a machinist. I will tell you what I know, and what I am capable of doing, but some of those guys could blow up an onion sack with their ego. I know this because a redneck from Tennessee invented the stroker CP3, it don't take much intellect to do this, or I wouldn't be doing it. And I wasn't calling those guys asking for information, they were asking me to see my CP3 flow sheets, so they could make better injectors. Funny who you once thought your friends are in this industry, who needs enemies?

@ChannelZeroOne

8 ай бұрын

@@MotorsportDiesel Most of them are haterz anyway. I am just some guy working out of a carport. The level of hate I get when stumped is amazing... I am aware most of it is the same sht from bosh. I am bit ignorant about the inner workings of it though. My theory was more pressure=finer mist, and that = better burn, which equals more power. I wanted my cruising rail up higher to get more mpg due to a more complete burn or so I believe. Since you seem to be ok with sharing info and not using scare tactics like the rest I got a question. How much further could I push the injectors and what is being stressed when I do? Those weaknesses, can they be upgraded to handle more stress? Use different metal for those part to make stronger? I assume an injector with a larger nozzle can handle more pressure since the pressure gets out faster. Like said I am running a 220 mpa sensor so it scales the fuel pressure up to a max of 220 before it cuts fuel. I think the factory sensor is 160 or 180 mpa. I am hoping to make it to the UCC one day. Just a guy out of a carport in Florida. Sure would be funny to get beat by a loser like me. Doubt it will happen, but I will settle for middle of the pack.

@MotorsportDiesel

8 ай бұрын

@@ChannelZeroOne More pressure is not the main thing to consider, it is a small gain. Bigger holes is the deal, and pressure is pressure regardless of the size of the nozzle. It is still a COMMON rail and the entire system is subject to the same pressure.

i see basically every stroker cp3 is starting at 10mm and going up. is there a reason, other than the performance per dollar return on investment not being high enough, that 9mm or 9.5mm strokers arent a thing?

@MotorsportDiesel

8 ай бұрын

That was the physical/mechanical constraint for the OG which was the 5.9 pump. I made some smaller shafts in the past, and may do it again. Of course everyone wants more, including me so that is the reason it all stared at 10mm. But the LBZ/LMM and 6.7 Cummins have more internal clearance and the shaft design allows for more stroke, so therefore we can and do go bigger on those.

@bert5003

8 ай бұрын

@@MotorsportDiesel i may be an outlier but i think a pump half way between stock and a 10mm would be awesome for guys with a spicy tune on an otherwise stock truck or someone with just some 50hp nozzles for better towing. less strain on the parts than the full 10mm stoke (or more) but enough to keep a mild build or just agressive tune from draining the rail. i very much appreciate your reply, its awesome to find people as smart as you who are willing to talk to a nobody like me.

@MotorsportDiesel

8 ай бұрын

@@bert5003 Everyone is a somebody, in my opinion. You might have missed something in the video, as these pumps are variable displacement by design, it will only give you as much fuel as needed based on demanded/commanded rail pressure. Only time "too big" is an issue is with bad tuning causing a pressure overshooting.

@bert5003

8 ай бұрын

@@MotorsportDiesel somehow i may have missed that piece. my bad.

sounds like you know the 42% over cp3 from industrial injecvtion is premium