Holset VGT 5VZ-FE turbo build

Ok I see what you are doing. Closed vanes at spool up to quickly get the compressor efficient and reduce transient response. Once spooled up you open the vanes to make the turbine efficient, reduce egt, more flow less boost. Somewhere with vanes open the wastegate will start to crack open to help control boost.

I'm not even going to try to wrap my head around the programming yet until you get something going along. It is a lot of factors going on there that you could do to ignore or try to incorporate into your automation.

 

I didn't understand anything I have read in here but I sure enjoyed the hell out of reading it.
Great job getting all that together. Nice to see you are local too.

 

Perhaps an over reaction on my part and I apologize but there is pretty clearly a lot of negativity in this thread. It just bums me out when 9/10 "builds" on this forum are the same old cookie cutter shit while OP is trying to do something groundbreaking and taking a lot of flak for it IMO.

 

There isn't any negativity. Some people just point out there honest opinion. They are not hating on the OP in any sense.

 

Good, we now have at least two people at our table.

I say throw some nos on there, and put it to the floor.....

It will be fine if you shift it as many times as Vin and Paul do in the movies...I promise.

 

Initial code is below - its just for manual control but you can see that it's not crazy complicated. Some of it is based on the code for the diesel application of the "Lil' Black Box" controller.

Glad it was a good read. I like reading a good build thread and I don't want to disappoint.


Ok, here's the basic code for manual control - aka potentiometer sets the vane position.

I'm still working on adapting the shaft speed based vane control that is used on the Cummins application. First I need to fix a leaking front caliper to make it safe to drive


Main loop:

void loop() {
// Sleep
unsigned int sleep = 0;
// Freq Measure
unsigned long sum[32];
float final_sum = 0.0f;
byte count = 0;
byte i = 0;

while(1) {
// Freq Measure

if (FreqMeasure.available()) {
sleep = 0;
// average several reading together
sum[count] = FreqMeasure.read();
final_sum = 0.0f;
for (i = 0 ; i < 32 ; i++) { final_sum += sum; }
// turbo_rpm = Freq(sum / count) * 60
final_sum = FreqMeasure.countToFrequency(final_sum / 32.0f);
turbo_rpm = final_sum * 60.0f;
lcd.setCursor(0,0);
lcd.print("Shaft Speed:");

lcd.setCursor(16,0);
lcd.print(" ");
lcd.setCursor(17,0);
lcd.print(" ");
lcd.setCursor(13,0);
lcd.print(turbo_rpm);
count++;
if (count > 31) { count = 0; }
}


pressureVal1 = analogRead(pressurePin);
delay(10); 'ghetto way to smooth the signal a bit and cut some high frequencies
pressureVal2 = analogRead(pressurePin);
pressureVal = (pressureVal1+pressureVal2)/2;
potVal = analogRead(potPin);
final_vane_position = map(potVal, 0, 1023, 40, 940);
//atmPressure = map(atmPressure, 0, 1023, .065, 30.000);
boostPressure = map_float(pressureVal, 0.00, 1023.00, .065, 30); 'approximate limits of the 2 bar GM map sensor
boostPressure = boostPressure - 11.65;

if (boostPressure > 0) 'code to shut the pcv solenoid valve closed as soon as there's positive intake pressure
{
digitalWrite(A3,HIGH);
}
else
{
digitalWrite(A3,LOW);
}


constrain(final_vane_position, 40, 930);
lcd.setCursor(0,1);
lcd.print("Position:");
lcd.setCursor(12,1);
lcd.print(" ");
lcd.setCursor(10,1);
lcd.print(final_vane_position);
lcd.setCursor(0,2);
lcd.print("Manifold P:");
lcd.setCursor(12,2);
lcd.print(boostPressure,2);
lcd.setCursor(0,3);
lcd.print("Throttle %:");
byte lo_byte = lowByte(final_vane_position);
byte hi_byte = highByte(final_vane_position);
byte data[] = { lo_byte, hi_byte, 0x01, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; // data message with an added counter
CAN1.send (0x0CFFC600, extID, 8, data);


}

}​

 

I need to brush up on my C, but from what I still can comprehend this seems like code for writing variables to be displayed by another method.

 

Yep, I forgot to paste in the other tabs with the setup and initialization of variables.

 

Nice! I'm really bad at code since I rarely do it, but I like where this is going.

 

Hey this is pretty cool, I have a HE351VE with the HE341VE compressor in my 2002 Tacoma. I swapped the engine out for a 4BT though.

 

For the love of god man make a build thread

 

Alright guys I don't want to hijack this thread, here is my stuff. Ill make a new thread for my next build soon.

My 02 Tacoma 4BT build

http://www.4btswaps.com/forum/showthread.php?15122-2002-Toyota-Tacoma-4BTA-swap-(yoings)

These are my controllers I make for the Holset VGTs, I can do just about everything Cummins can do with E-Tool I am now working on a new Tacoma, 2011 Crew Cab TRD Sport that I am swapping a custom ISBe3.9 with a HE300VG into.

http://www.4btswaps.com/forum/showt...t-gear-conversion-with-F250-200HP-calibration!

 

Alright guys, below is the thread for Tacoma World.

https://www.tacomaworld.com/threads/2011-crew-cab-trd-sport-build.415203/

 

Bump. Hope the build is going smooth.

 

this is brilliant, i i love the idea of the Holset VGT but ill probably be sticking to a plain old hx-40 6-blade on my cruiser

 

Bump

 

almost a month since OP's last post. come on OP, keep going!

 

Other than the code to get the VGT in "Auto-mode", the build is done! It runs great at ~4.5-5 psi, which pretty much maxes out the injectors. If I decide to do fuel mods in the future, I'll continue documentation here.

I do need to get some more videos up though. My DSLR is broken right now ...

 

Pretty cool man, you can easily make 20psi. I have a buddy up in Canada making 20+ on a old supra with my old setup.

 

While Ive seen 17psi, I'd be hesitant to run 20 on a stock 5VZ. Certainly won't be easy. Well, I guess you can do it but only once.