So after a 4 hour drive there and 4.25 hours back, I now have a stage one modded CP3 by Floor-It diesel.

Boy, where do I start?

First heres a few runs after it was installed:
http://tomeygun.com/misc/smokevid/tst9x9.MPG
http://tomeygun.com/misc/smokevid/TST8x8.MPG

This was quite a learning experience in that John and Scott told me that I need 40psi at the inlet of the Cp3, and preferably a 150gph pump.
ME? I have a 95gph FASS (pump only) - Not good as we would find out later

So we baselined the truck at 520hp, About right with the weather, Colder weather 4 months earlier netted a 524. - I go and have lunch and return to a ready to dyno truck with Modded CP3 on and ready.

I admit, even thought I KNEW I did not have the right fuel pressure, I had high hopes. Well the best we could muster out was 522hp...

AHH, I know what your thinking... 2hp ?!?

But upon closer inspection of the dyno graph you can see that I actaully picked up OVER 100hp from 2200-2500 rpms. So we broke out the fuel pressure gauge to figure this out... Well John and Scott were right, 95pgh just does not cut it.

At Idle I have about 22psi - and it holds 20psi right about till 2000rpms. Then drops to 16ish, then about 2500 - drops to hp-robbing 6psi -- RIGHT WHEN the CP3 needs it the MOST!

the 150gph will be on by april 1st for the STL dyno day. We will shoot for some bigger numbers there.

SOME OTHER NOTES:
1) interesting I got 18mpg there, BUT managed 20.6 mpg on the way back -- Fluke maybe?
2) boost and EGT are lower on regular cruising speeds. (not alot, but noticable)
3) Spool-up is way better. I can really tell the extra mid-range - I used to feel the rail drain and then recover. Not anymore, Just pulls hard and keep pulling till about 2600 then starts to loose PSI at the cp3 inlet

so there you have it, 150gph pumps are needed, who'da thought?

 

Tomeygun,

Did John say what mod is necessary to the 150gph FASS to get to 40psi at the inlet of the CP3?

 

OT-OF-Here, The FASS only requires a different spring/shim washers to make it put out 40psi. Contact DPP to get one

 

and if that is overhead mpg results..... well we all know that our trucks think they do good on fuel, they even go as far as trying to show you they do good on fuel..... break out the calculater ...

 

That figures on the "how to" and thanks for the info. I don't think Tomeygun's results should really be a surprise. I wouldn't think that you could roll into Floor It with the FASS already modded as you would have blown the pressure valve out,...right? That along with the 95gph FASS pretty well explains his initial results. And as most things with these trucks and their mods, you can plan on spending 3X as much money as initially thought and twice as much time and then you probably will find someother system that needs to be upgraded to support what you've just done. I think figuring it all out is the best part of the trip.

 

TG,

The peak power is not higher because the stock injectors are too small. This is why your power curve is wider at lower RPM, but it does not climb past where you were before in peak numbers.

Got Flux? LOL The original ones will raise that number to near 600. Flux 2's are under production now for power hungry.

Following that, John will have the prototype F3's Tuesday or Wednesday. With the Stage 2 pump I suspect he will make history or no one will hear about it

Did John tell you the Flux nozzles have been in his truck with a blocked rail return for the past year? During pulling season last year he was getting over 33,000 PSI. With the stage 1 pump he is at peaks of 39K PSI

Don~

 

haha, I made my overhead computer into a blender years ago!

These mpgs are hand done:
THERE/Back to Oak Grove, MO - 4.8 hours/360 miles - 75 mph average - used 20.425 gallons - 17.6 mpg (rounded to 18mpg because that is the usual and this tank had 6 dyno runs on it)

BACK from Oak Grove, MO - 213 miles - 3.3 hours - 64 mph - 10.327 gallons used - 20.62 mpg

I guess it could be from the 64 mph - BUT I was really hammering on it to see the smoke and spoolup, so I know that couldn't of helped...

I will for sure be doing further controled MPG testing.

 

Think?

One things for sure, that 6psi at the inlet from 2500rpm and up is not good and I dont think even with modded injectors that I could have made more power.

I will address the GPH on my pump and then see if John can make me a sweet deals on a certain set of stages 1's that may be coming out of truck

F3's huh? Cant wait to see those in action!

 

How does the stock lift pump compare to the two FASS pumps of 150GPH and 95? Maybe 60ish?

 

Do they have any concerns about running that pressure (40+ psi) thru the stock fuel filter?
And did they happen to mention why they needed such pressures at the cp3?
This is very interesting stuff... Keep us informed Big "T"...

 

Well I know the couple truck that have the psi to 40, have full FASS systems.

So I really have no idea. I plan on trying the 150psi at 20psi, and if I can hold that psi then no need to go higher. I do not know about the stock fuel filter and its compatability with 40psi. I might ask some 12v people, they run high psi quite a bit

 

I've had 30+psi at the filter with no problems. I do know some had leakage with 60psi. Good luck and awesome numbers with the truck.

 

perfect, I guess 40psi will not be bad for the stock canister.

we'll give it a shot and see if we need to back it down to 30psi

 

buddy across the street has a stage one cp3 with 130 hp injectors on a 04 cummins, he as well seen a big difference hp, gtech almost lost a .6 in the 1/4 with just this mod, we had used the stock lift pump with two aftermarket liftpumps and the stock fuel line, making a total of 20psi for most of the run, but pulling down to a low of 14psi for a short part of it...

he is waiting on the fass pumps now as well to raise the inlet pressure to 40psi for the cp3.... we were told that we need to install a 5/8 line from the tank to the fass then use their filters and go straight to the cp3, for least restriction and most volume, with the plugging of the rail to hit a high of 29k on the rail on a wot run

 

ive searched and read, however am still confused about the need for aftermarket fuel supply and such. has anone done a write up on WHEN you need to upgrade, WHY, and WHICH is the best way? ive waited forever to get a chip and would hate to have my fun ruined by low psi. would it be better to upgrade the fuel system first? how are the cp3's being modded?