He351ve stand alone Arduino controller code for 2nd Gen Cummins

[Me78569]

 

Made a holiday trip to my moms house up in north minnesota, AKA sea level.  I cannot say how much I hate living at 7000' in altitude. 

with my 100 injectors and my quadzilla turned up my truck is all but smoke free at 450 hp worth of fuel at sea level, at home my truck smokes like a train.

I could EASILY pass emissions with the fuel turned up if I didn't live at 7000'


I did notice that my boost and drive sensors were reading high at idle, due to more atmospheric pressure.  I have added some to my code to adjust the boost and drive values by comparing idle state boost to recorded boost, IE: at idle boost should read 0 so if it is reading more or less I can adjust the readings

Here is the timer trigger

Code: [Select]

if (timer % 800){ //checks for idle state to run the barcalc section, which corrects the boost and drive sensor for altitude changes.
    if (ThrottlePosition = 0){
      barcount ++;
      if (barcount = 10){
        baroffset();
      }
    }
    else { barcount = 0;}
  }
Pretty much if TPS is 0 for 10 times through the timer section it will run baroffset();
 

Code: [Select]

void baroffset (){                                         // compares idle state boost to 0 psi so altitude isn't causing miss readings.
  barcount = 0;
  barcalcb = 0 - BoostPressure;
  barcalcd = 0 - ExhaustPressure;

}
Then  I adjust my boost and drive reads.

Code: [Select]

  if (adc_roll_over == 1) { BoostPressure = ReadBoostPressure() + barcalcb; }
  if (adc_roll_over == 2) { ExhaustPressure = ReadExhaustPressure() + barcalcd; } 

Version 1.07 is now uploaded.  It is beta, but should work as it is a simple adjustment.

[CSM]

Here at little rock, my truck is darn fast.  It spools like it has twins and pulls clean until I overload my injectors. 

In CO over Christmas, it felt like a dog until it got spooled.  I still like my tight converter, but it takes a lot of care to get off the line without smoke at altitude.   I doubt I will ever upgrade to twins with a good cam, but I'd like to. 

Edited January 4, 2016 by CSM

[Me78569]

Alittle more turbo tuning and all I can say is WOW.... yes I know again. 

 

At 7000' altitude WOT 3rd gear

boost 36 psi ( puts me near 45 psi at sea level if you go by Pressure ratio very rough math)

egts 1205*f

Drive pressure ~45 psi

 

Kick in the pants.

 

I did recently learn that the quadzilla can now do data logging and export to csv, so I am working to figure that out and get some runs posted.  I might be able to make some pretty graphs like cowboy.

[Cowboy]

If you made graphs that look like mine, you should be ashamed of yourself.

Either way, can't wait to see them!

[Me78569]

Its snowing outside and I am considering going out, and giving her the beans on my other phone which the export works for......

[Me78569]

well I got some data,  Looks like I am limited to 5 minutes worth of logs using the quadzilla so I will have to start / stop logging after a run. 

 

The log  I have I don't go over 10 psi as it is snowy out there and I would have just blown the tires off the truck.

 

 

Now I just have to figure out how to make it into a pretty graph

iQuad-2016-01-07-10.07.372063219092.csv

 

 

Anyways here is a graph, yaya pretty.  no mor ethan %30 TPS, but proof of concept for hte data logging.

Edited January 8, 2016 by Me78569

[Me78569]

Time for another graph.  Again it was slick out so I could't get onto the go fast pedal until I was rolling.

 

 

 

Cowboy once it clears up I will get you a graph of a 3rd anfd 4th gear pull from 1200 rpm to show you how boost comes on.

[Mopar1973Man]

By chance Nick do you still have all your previous version of software?

[Me78569]

of the controller software?  

[Me78569]

Ok cowboy,

 

Here is a 3rd gear pull.  at ~35 mph I held the lockup button and went to ~%80 TPS ( then backed off some)  I pretty much flooded the turbo haha.  had I rolled into the throttle it would have built boost better, but it was fun.

 

EGT's are the most impressive on this one, max of 1200*f 

[Me78569]

Another chart. From a stop, 

 

No extra fuel only injectors.....Max EGT of under 900*f   This turbo tune has almost no smoke even on the idle to high tps input.

[Cowboy]

Looking good!  What's the delay between data logs?  And what's your drive pressure at when you're at 3000 RPM?  My HX35 hates me to no end.  But we've both got similar turbine wheels.

[Me78569]

Drive at 3000 rpm is at 1:1 now with the tuner turned off.  I can push the turbo significantly harder that I am right now.  

 

With the turner turned up drive is about ~45psi when boost is at ~40.   The turbo doesn't have drive pressure issues on the 5.9 like it does on the 6.7.  I think right now I am only opening the vanes to ~16cm

 

Regardless I can drive the turbo much harder than I am now, but I don't like how high strung the truck feels when I tune the turbo for max power.  I am going to allow for the pot to change the curve more to allow for that, but I doubt I will use it.

 

Looking at the charts the turbo looks laggy, rpm vs psi, but it isn't.  I think the main reason is the auto and lockup not happening until ~45 mph in that chart.   I need to get some better locked pulls. The truck jumps right to 1800 rpm with my revmax converter

 

log is in 1/3 second

 

attached is the log.

NOEXTRAFUEL.xlsx

Edited January 13, 2016 by Me78569

[Cowboy]

Very Impressive!  Does the HE351VE have a 60 or 62mm compressor wheel?

[Me78569]

60mm  Honestly I think, looking at my logs now, that you could run a 62mm compressor without touching the exhaust and gain some air since I am not running into DP issues even though I am close to maxing out the map of the compressor.

 

I think the 6.7 guys don't see any bump with a larger compressor, without a large exhaust, since they are working with more exhaust flow, causing the DP to climb.

[CSM]

I want a ride.  This is neat, especially at 6000 ft.  I think my 62 is going to be pretty laggy at altitude compared to 300 ft. 

[Me78569]

buckle up spanky because you are about to get a rude awakening.  

 

Emissions might prove to be a pain unless you have a smarty, or borrow tylers.

[CSM]

26 minutes ago, Me78569 said:

buckle up spanky because you are about to get a rude awakening.  

 

Emissions might prove to be a pain unless you have a smarty, or borrow tylers.

I have a smarty.  I also am currently emission exempt.  

[Me78569]

[Me78569]

So cowboy, you said you wanted to do something different right?   

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How about a vgt compound setup?  he300ve / he551ve setup with dual controllers?  

 

I really think this would be a sweet setup and I am sure the controller could now handle that wihtout much trouble at all.....