SMARTY DEFUELING ON 07''s ISSUE.

Well I did some playin around last night. On sw9 I had my waste gate set right over 45 psi. On sw7 I hit 52-55 psi on three seperate pulls last night so I think I don't have enough fuel to keep up with sw9. Maybe all the duration was draining my rail. Idk. What do yall think
 
I just had a randome thought on the issue, does anybody know the chip that runs the ecu in these trucks? is it possible that with the added info from the can bus system that the trucks simply can not process enough info to keep fueling at higher rpm? going from 3k rp m to 4 k rpm is an increase of 136 %, trying to get all that info out to the components in a timely manner might just not be possible with the stock core processor. I know overclocking computer chips is possible, but to do so on a chip embeded in an ecu ? seems they would use one capable to keep up with stock speeds, as faster chips are more expensive... keeping cost down is always in mind.
 
The newer vehicles have many more fuel and timing maps than ever before.

I think it may have to due with fuel and timing maps. The newer trucks have many more maps to deal with, and Smarty does not have as many maps as required to reach the higher end of the RPM range appropriately.

At least that is my guess. Especially since this problem does not seem to appear in anything but the newer trucks.
 
Here is my most recent dyno graph while running TNT/R, lower numbers were with a stock Cp3 and highest were with a 85% from II....on any of them I dont think I see defueling, do you???? And yes i have a 07.

Brownsdynorun.jpg
 
I dynoed with just 2.4d on my BD and fueled farther and longer into the rpms, peaked at 32-3300, and ran to 3750...thats seriously a worse looking graph then my Predator. And I still have 2 custom tunes to try yet.$.02
 
SledPuller21 said:
I dynoed with just 2.4d on my BD and fueled farther and longer into the rpms, peaked at 32-3300, and ran to 3750...thats seriously a worse looking graph then my Predator. And I still have 2 custom tunes to try yet.$.02
Click to expand...

Whos graph looks bad???
 
lol, well i only see one graph.there's alot more people saying there's a problem then you and 1 other member on the forum.
 
SledPuller21 said:
I dynoed with just 2.4d on my BD and fueled farther and longer into the rpms, peaked at 32-3300, and ran to 3750...thats seriously a worse looking graph then my Predator. And I still have 2 custom tunes to try yet.$.02
Click to expand...

LoL!

I saw your graph. I'd take Les' graph any day of the week. I bed he'd spank your ass on the track too.
 
sleds even has the CF on and smoothing of #3 !! carumba !

Les, I believe he made that statement about me and sled. What he doesn't know is, not every person running that program posts here and cares to post about it. Only a hand full are complaining. For some reason, mulisha think he's gonna run 11's flat if he can run his truck to 4K. I still find it hard to believe he ran a 11.8 with only 600 and change HP without spraying.

I'll bring my dyno back here with these others for comparison....

dyno.jpg
 
triton, hard or not to believe, he ran 11.82, I was there to watch it. and have seen his truck, no laughin gas involved, no special fuel, no crazy methanol blend..... pretty sure he was a lot closer to 700 than 600.
 
well, I didn't say he didn't do it.... just hard to believe. 4K isn't gonna get him more though like he thinks it will
 
most likely correct, seems to me, if you want to go the fastest, you need to be in your max power/ torque band the entire time you run, so you shift as you start to go past peak, and the shift drops rpm to just where the motor is starting to peak.
 
07 5.9,

So, where's the pull to 3800-4000rpm? OF COURSE you don't have defueling, your only going to stock redline. Pull to 3800.

My truck shuts the heat off at 3600rpm (129mph, just checked that limit today). EGT and boost drop dramatically, If it was mechanically limited to only making power to 3200. the dyno will show this. However, wouldn't EGT and boost still remain high while well over the mechanical limit of the motor correct?

I suppose there are only 2 explanations here for my lack of heat.

1. Software is pulling back on fuel over 3500-ish for me and slows the truck's acceleration rate, hence lose of heat and boost.

2. the CP3 is turning way to fast here and is unable to draw in fuel anymore. So a second under-driven CP3 is needed for upper RPM fuel.

When I get around 3500 my rail pressure increase as well, so ...
 
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JasonCzerak said:
07 5.9,

So, where's the pull to 3800-4000rpm? OF COURSE you don't have defueling, your only going to stock redline. Pull to 3800.

My truck shuts the heat off at 3600rpm (129mph, just checked that limit today). EGT and boost drop dramatically, If it was mechanically limited to only making power to 3200. the dyno will show this. However, wouldn't EGT and boost still remain high while well over the mechanical limit of the motor correct?

I suppose there are only 2 explanations here for my lack of heat.

1. Software is pulling back on fuel over 3500-ish for me and slows the truck's acceleration rate, hence lose of heat and boost.

2. the CP3 is turning way to fast here and is unable to draw in fuel anymore. So a second under-driven CP3 is needed for upper RPM fuel.

When I get around 3500 my rail pressure increase as well, so ...
Click to expand...



Jason, my truck is an 04.5. It will fuel all the way to 4200 rpm, but probably not full fuel. Boost starts dropping off after 3500 or so.

I know this is not ALL smarty related. Swapping in a header netted post peak gains. Cammed trucks also do better post-peak.

I'll have an answer for you soon as to whether or not dual cp3's make a difference on post peak power.

People are going to have to come to the realization that the programmer isn't going to do all the work. A well balanced diet of fuel and air will help tremendously. Don't get me wrong, I'm all for anything marco can squeeze out of our trucks with programming. For now, I'm focusing on hard parts.

-jp
 
JasonCzerak said:
07 5.9,

So, where's the pull to 3800-4000rpm? OF COURSE you don't have defueling, your only going to stock redline. Pull to 3800.

My truck shuts the heat off at 3600rpm (129mph, just checked that limit today). EGT and boost drop dramatically, If it was mechanically limited to only making power to 3200. the dyno will show this. However, wouldn't EGT and boost still remain high while well over the mechanical limit of the motor correct?

I suppose there are only 2 explanations here for my lack of heat.

1. Software is pulling back on fuel over 3500-ish for me and slows the truck's acceleration rate, hence lose of heat and boost.

2. the CP3 is turning way to fast here and is unable to draw in fuel anymore. So a second under-driven CP3 is needed for upper RPM fuel.

When I get around 3500 my rail pressure increase as well, so ...
Click to expand...

per Cummins specs for these trucks.... they're good to 4200rpm's stock so I would think the CP3 could handle at least that. Since we all have larger injectors... duals or a modded pump would definitely be needed though.

My egt start to drop to once into OD @ WOT also but I think, it's because the truck isn't having to work as hard as it does at higher rpm's with higher boost

I too would like to see marco be able to get more power but as it's been said..... that only get you so far.
 
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