BBI for the masses

[AH64ID]

It's odd indeed, but 250K miles is a lot.

Let me know how the rail pressure holds on the UDC tune on the street, that will be a better indicator. It's possible to not see a dip in rail on the dyno as the runs are so fast.

 

[cerberusiam]

Let me know how the rail pressure holds on the UDC tune on the street, that will be a better indicator. It's possible to not see a dip in rail on the dyno as the runs are so fast.

Yessir, gonna play with the UDC tune a bit and see if I can find some rail pressure drops but really not seeinf anyhting obvious on higher HP tunes. Could be the larger nozzles are just too much. That being the case when I step up to the BBI's should see some sharper indications when I push it. I have a +20k GCVW load to haul back from Georgia as soon as I get the swap done and a trans cooler leak fixed. Will be a good test on mileage and driveability. Wating until the weather will moderate just a bit for good conditions. Heavy loads in intermittent downpours, heay constant rain, and wind is not conducive for decent mpg and solid basis for most driving.

 

[MGreer]

Cerb,

My truck has been low on power for the last couple months. I usually run smarty on sw3 and when I put it back to stock programing there wasn't much difference.
I suspected it was the lift pump. I changed the lift pump out and it brought the truck back to life. I don't have a fuel pressure gauge yet so I didn't know what the pressures were.
I put an extension on the drain hose for the filter housing into a gallon container, opened the valve and turned the key on. I put my thumb over the hose and the pump didn't build up enough pressure to push fuel past my thumb. The pump cycled off after about 38 seconds and when I let my thumb off there wasn't uch pressure on the line.
This is an easy test you could try before replacing anything.

 

[cerberusiam]

It is worth noting, again, that when one is running a rail pressure gauge they can be plugged in backwards. When they are plugged in backwards many codes and weird reactions occur.

Once that little mis-step was cleared things fell right into line with the claims. These injectors are smooth right out of the box, I expect them to smooth out even more once I get some runnign time and solid towing on them. Scoped a couple cylinders looking for spray patterns and was quite dismayed at the amoutn of carbon build up on the pistons and even the tips. Granted, it has been DD'ed quite a bit in the last month or so but it was worked hard up until that point. There is a LOT of build up, much more than the stockers when I pulled them. Pretty sure thta was an is contributing to the enhanced noise when running. It is getting better the more it gets run and expect once I work it good and hard for a couple 1000 miles on it.

First thing we noted is the engine has smoothed out quite a bit at all rpms. The BMS's weren't bad but the BBI's are definitely smoother over all. Noise from the engine is also down, most noticeable at steady cruising speeds. The marketing is absolutely correct, no injector rattle at ALL! The BMS's were better thna stock but these are a LOT better than anything. This all probbaly contributes to the perception of quiet that was very noticeable.

A test run of the contirbution percentages confirmed they are tight on tolerances, no more thna 2% variance and those are all coming back to 100% frequently as the ECU cycles thru adjustments.

The injectors most decidedly flow much better than stock and quite a bit better than the BMS 50's. Smoke is controllable with right foot on tunes that were pretty clean before but one can really get some smoke in low\no boost conditions. Timing helps but there is definitely more fuel there. Reduce the tuning using a box tune or a UDC tune adn it cleans right up, all a matter of getting the fuel management right.

Anything over SW3 and the fuel pressure is a problem. SW5 wiul pul it hard on to 0 once you get rpms over 2500. SW3 is better but still pulling down way too far for comfort. These tunes were usable with stock and 50 HP injectors and only showed potential problems at WOT under a load. Even SW3 is pulling under where I want it now. At 250k it is time to upgrade the LP situation.

Have not gotten enough time to really test things out due nothing but severe weather at every turn. Will continue working on the tunes and how the truck responds. Have a long tow with some heavy loads to make as soon as I can get decent weather so that should help get things cleaned up and cleaned out. Will know a bit more about fuel efficiency also.

All in all the BBI Stage I's definitely live up to their billing, at least from the SOP meter stand point. Once I can get time to line up a dyno again will have some hard numbers for comparison. Someone asked if I was going to make other mods before dyno testing again. The answer is yes, but, after I get a reading from what to expect on stock LP. The comparison needs to take into accouunt what happens with stock and milder tunes and no LP upgrades. Thne, when I cna get time and funds this summer to do a FASS we will see if that will bring the HP back into line with the sotck numbers I did 5 years ago. I suspect even the 50's are hurting the final HP numbers and expect these might even drop it more. However, should see a jump in TQ to verify that the fuel is getting there with enough LP flow.

Stay tuned, will have more numbers and observations as time allows.

 

[p-Bar]

Cerb thanks for the report. I think a lot of Cali folks are wondering if these are are going to pass a snap test? maybe if you put it back to stock and give it a few snaps and see what kind of smoke you make . Thanks

 

[cerberusiam]

I will drop it back to stock tomorrow and do some driving, have to run errands and weather is supposed to be nice.

 

[Tuesdak]

Anyone with any kind of emissions to worry about want to know how clean they are on a stock tune...

 

[AH64ID]

Anyone with any kind of emissions to worry about want to know how clean they are on a stock tune...

No need for a stock tune. An emissions UDC tune or 1/2 power should work better than stock.

 

[p-Bar]

Cerb anytime to snap test.?

 

[cerberusiam]

Cerb anytime to snap test.?

Nuts! When I do get a little time to do something the skys grow dark, the wind starts howling, and the lightning starts flashing. I don't think fate wants me to test ANYTHING anymore. :-laf

 

[p-Bar]

Sorry you guys are having issues over there. You could send those clouds to Cali as we need it here.

 

[cerberusiam]

Ok, warmed the engine up and blew all the soot out and tried it on stock. A puff of light black smoke on the initial hit of the throttle. I don't have the CAT so it may clear to nothing with that in place. It is not very apparent but since that test is so subjective hard to say what one the emissions yokels is going to say.

 

[HHhuntitall]

Doesn't the factory auto transmission torque limiting program take effect on the stock program? Could explain the low HP numbers with high tq.... When I dyno'd my '03, it ran out of fuel with the stock lift pump when it went over 379hp. I was using the TST, though. Anything above 3 power setting would fall on it's face with a Holley Black running through the stock filter housing. I've got an Air Dog now, and it pulls good at 4. I've never put it up above that, as the transmission gets hot and starts crying....

 

[cerberusiam]

When the truck was new I could push right at 500 HP with the Smarty and stock components. The TQ is up nicely on the BMS's and SOP tells me it will be even better with the BBI's. Definitely looks like the LP is loosing its push at 250k and the bigger injectors just demand more. A TST and stock LP falls a lot harder sooner than a Smarty does, that is for sure. Now I am going to have to do the FASS and see if the HP power comes back. Need to get a dyno on the stock LP first and see what it looks like then upgrade the fuel delivery system.

Put a 100 miles or so on the truck on a stock tune and definitely feels stronger down low. Missing the HP kick of the Smarty in the top end but the bottom end feels strong even with a stock tune.

 

[promisedland]

Maybe i missed it in this thread or maybe it wasnt touched on......i was wondering about rpm drop on our 5.9 cr engines....to my knowledge my 04.5 has oem injectors. when come off the pedal my rpms come down slowly. on some u-tube clips of after market exh. systems i hear there CR rams coming down [rpms] like a 2nd. gen.

So here is my question........ Do larger injectors have this affect?

any updates on bbi's ? i really enjoyed your posts! thanks my friends!

 

[cerberusiam]

The ramp down will be effected if the injectors and nozzles are not well adjusted and the nozzles done correctly. Rpm's coming down slowly is normal, that is built into the defuel process to keep from blowing the PRV. If the rpms step down or hang then there is an injector problem.