Author Topic: HE351VE in a 4g63  (Read 12758 times)

Offline EvoAuto

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on: July 15, 2015, 12:39:07 AM
Hi
I just finished installing the turbo. Curtis was nice enough to build me the board and answer all my questions. I need some help fine tuning it for my setup. The engine is 2.3L 4 cylinder. The default values are not the greatest. It's starting to spool at around 4000rpm.

Curtis has instructed me to change the default curve_rpm values to 9000 17000 26000 39000 67000
I will be uploading this tomorrow when I finish work tomorrow and update you guys.

I also need to learn how to change the "performance" settings. I was able to change the "cruise" setting to find the sweet spot at idle. It seemed to spin the shaft the fastest at position 700 at idle. I went from position 40 all the way to 960 in roughly 100 increments. At position 40 it's spinning at 4000rpm's; at 700 its spinning at 6500rpm's; at 960 it is spinning at around 5000rpms. I've also noticed the exhaust note is the quietest at position 960.

Thanks for reading



Offline kapok6

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Reply #1 on: July 15, 2015, 08:10:50 AM
Please continue to update this thread as I have been talking with curtis for quite a while now about retrofitting one of these on my auto awd 1G.



Offline hakcenter

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Reply #2 on: July 15, 2015, 08:23:21 AM
I haven't really put the code in the wiki to explain sections but I'll try to make mention of how most of the stuff works now.

Normal operation includes idle.
Cruise is a mode
Performance is a mode

During idle, which is anytime the turbo is under idle rpm, or rpm has past the idle walkdown rpm, and is under that value, then it will attempt to walk the turbo rpm down back under idle rpm. This area is tricky, cause you can get it stuck on the first curve value if idle and walkdown aren't tuned properly

Cruise was made for freeway operation in mind. It just attempts to get turbo rpm around 50,000. If turbo rpm is under that, it uses a static cruise value which is a bit higher than you would expect, but will help off idle but still let the turbo eventually spool up. In cruise though the code is setup to just continue to open the turbo to prevent rpm going past 50,000 all the way up to 25cm if it has to.

Performance for the time being is quite simple. It is a static value added to the current curve. Configured by jp2 header position. If the current curve value + the performance increase is under vane position 800, it is static 800. Until turbo rpm finally reaches top_end_rpm which is set at 105,000


Outside of learning how it works, it will help to know your turbo idle rpm, when the motor is completely warmed up. Also what curve you're using: 1, 2, 3, 4 ?

Don't get discouraged, there is so much room to adjust the turbo, from the default values :D

AMP 2 Corinthians 8:21
For we take thought beforehand and aim to be honest and absolutely above suspicion, not only in the sight of the Lord but also in the sight of men.



Offline Rx7man

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Reply #3 on: July 15, 2015, 07:09:06 PM
I am trying to convince my buddy to put one of these on his 3rd gen Rx7.. I think the logic may be fairly different on a gas engine, especially because of the throttle plates... might nearly want 2 map sensors?

curious to know how it works for you :)

'94 dodge, Colt Cam, head worked, NV5600, 3.55's, SB clutch, Ford manual hubs w. hawk brakes, custom flatdeck, custom aluminum bumper, cab off restoration, totally new engine, Mahle pistons @19:1..HE351VE with 67mm turbine and 67x95mm compressor
440hp/1000 ft lb @ 2400 RPM


Offline EvoAuto

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Reply #4 on: July 19, 2015, 12:28:29 AM
Sorry I've been busy at work. Haven't had much time for testing. I took the car out for a drive. With my old turbo I had a pretty good tune. With this turbo and the W2A intercooler the ECU has never been in these cells before so it's running very poorly. I will be tuning when I have time this week and update you guys.

Curtis when I start logging with the Arduino it says I'm on curve 4.



Offline Rx7man

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Reply #5 on: July 19, 2015, 09:21:13 AM
What ECU do you have in the car for the engine?

'94 dodge, Colt Cam, head worked, NV5600, 3.55's, SB clutch, Ford manual hubs w. hawk brakes, custom flatdeck, custom aluminum bumper, cab off restoration, totally new engine, Mahle pistons @19:1..HE351VE with 67mm turbine and 67x95mm compressor
440hp/1000 ft lb @ 2400 RPM


Offline hakcenter

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Reply #6 on: July 19, 2015, 11:19:45 AM
What is your turbo idle rpm when your motor is completely warm?

AMP 2 Corinthians 8:21
For we take thought beforehand and aim to be honest and absolutely above suspicion, not only in the sight of the Lord but also in the sight of men.



Offline EvoAuto

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Reply #7 on: July 19, 2015, 09:40:37 PM
I am using AEM v1. I will be replacing it with an Evolution 8 ecu to run Ecuflash. In my opinion it is more user friendly. As for idle speed, it will no longer autoscroll since the last changes you sent me so I cant tell.



Offline Rx7man

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Reply #8 on: July 19, 2015, 10:04:25 PM
A lot of settings may be a lot different on a 2.3 L gas engine than on a diesel... there's no doubt you can make it work, it may just take a bit more work... The throttle plate is going to throw a wrench in your spokes possibly as well.

*Maybe* you will need another map sensor between the turbo and throttle plates to deal with the turbo, and the one after the throttle plates for the engine mapping?... there may of course be workarounds

'94 dodge, Colt Cam, head worked, NV5600, 3.55's, SB clutch, Ford manual hubs w. hawk brakes, custom flatdeck, custom aluminum bumper, cab off restoration, totally new engine, Mahle pistons @19:1..HE351VE with 67mm turbine and 67x95mm compressor
440hp/1000 ft lb @ 2400 RPM


Offline EvoAuto

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Reply #9 on: July 20, 2015, 12:57:12 AM
I don't think a second map sensor is needed for my setup. I have a water to air intercooler with almost no pressure drop from Turbo to manifold.



Offline hakcenter

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Reply #10 on: July 20, 2015, 10:47:00 AM
Make sure when you're making changes in the arduino IDE, that you save them, before uploading, so things are constant.

Code: [Select]
// Turbo
const int minimum_turbo_rpm = 4000;
to
Code: [Select]
// Turbo
const int minimum_turbo_rpm = 1;
^ Will make sure the serial output is continuous as long as the turbo is actually spinning.

Code: [Select]
const unsigned int idle_position = 480;
to
Code: [Select]
const unsigned int idle_position = 720;
^ smaller idle position, may need more

Code: [Select]
const unsigned int turbo_curve_1[5] = { 800,740,700,640,600 };
const unsigned int turbo_curve_2[5] = { 820,760,720,660,620 };
const unsigned int turbo_curve_3[5] = { 840,780,740,680,640 };
const unsigned int turbo_curve_4[5] = { 860,800,760,700,660 };
to
Code: [Select]
const unsigned int turbo_curve_1[5] = { 840,780,740,680,640 };
const unsigned int turbo_curve_2[5] = { 860,800,760,700,660 };
const unsigned int turbo_curve_3[5] = { 880,820,780,720,680 };
const unsigned int turbo_curve_4[5] = { 900,840,800,740,700 };
^ is moving the curves up by a 1cm^2

Code: [Select]
const unsigned int max_position = 940;
to
Code: [Select]
const unsigned int max_position = 960;
^ is going to let the turbo use 960, which in my testing was the absolute smallest the turbo would go physically. It might goto 980 /shrug, but you're going to need more room to close the turbo up.

I imagine your curve will probably include that position, especially if you've used it and it sounds nothing like my videos ie: turbo whining at idle.

AMP 2 Corinthians 8:21
For we take thought beforehand and aim to be honest and absolutely above suspicion, not only in the sight of the Lord but also in the sight of men.



Offline Rx7man

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Reply #11 on: July 20, 2015, 11:26:52 AM
I don't think a second map sensor is needed for my setup. I have a water to air intercooler with almost no pressure drop from Turbo to manifold.
I'm not concerned about the pressure drop through the IC, I'm thinking at part throttle you're going to have a BIG pressure drop across the throttle plates, and if you try and spin the turbo too hard you'll surge it.. or the BOV is just going to be venting a whole lot depending on the setup

'94 dodge, Colt Cam, head worked, NV5600, 3.55's, SB clutch, Ford manual hubs w. hawk brakes, custom flatdeck, custom aluminum bumper, cab off restoration, totally new engine, Mahle pistons @19:1..HE351VE with 67mm turbine and 67x95mm compressor
440hp/1000 ft lb @ 2400 RPM


Offline hakcenter

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Reply #12 on: July 20, 2015, 01:02:29 PM
I'm sure he has a blow off, most gasser turbo cars have them. And since its rpm the rotor should have inertia and not spin down incredibly fast and bark.

AMP 2 Corinthians 8:21
For we take thought beforehand and aim to be honest and absolutely above suspicion, not only in the sight of the Lord but also in the sight of men.



Offline EvoAuto

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Reply #13 on: July 22, 2015, 02:00:18 AM
Went for a tune last night. The car pulls very hard at 10psi. After about 30 minutes of driving though the car started to blow blue smoke. I limped it back to the shop thinking it was the engine but when I started this morning there was no blue smoke at all. Did a compression and leak down test. Engine checked out ok. I think the oil pressure might be too high coming from the oil filter housing so I decided to feed the Turbo from the head instead. I also have a poorly positioned drain due to the controller. I'll report back soon. I hope i didn't blow the turbo's seal. Very excited though the Turbo is spooling around 4000rpm and pulls very hard.



Offline kapok6

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Reply #14 on: July 22, 2015, 07:11:38 AM
When you say "spooling", what do you mean?  It's just starting to spool and build boost at 4000, or it's at "full" boost (10psi) by 4000?