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 Old 10-08-2019, 06:25 AM   #1
 
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Default Boost target, WGDC not working as they should

I am setting my boost target to 0 peak as shown:
Code:
-14.50	-14.50	-14.50	-14.50	-14.50	-14.50	-14.50	-14.50	-14.50	-14.50	-14.50	-14.50	-14.50	-14.50	-14.50
-14.50	-14.50	-14.50	-14.50	-14.50	-14.50	-14.50	-14.50	-14.50	-14.50	-14.50	-14.50	-14.50	-14.50	-14.50
-14.50	-14.50	-14.50	-14.50	-14.50	-14.50	-14.50	-14.50	-14.50	-14.50	-14.50	-14.50	-14.50	-14.50	-14.50
-11.55	-11.50	-12.53	-12.51	-12.50	-12.49	-11.86	-11.24	-11.19	-11.14	-11.08	-11.03	-10.98	-10.93	-10.88
-8.61	-8.50	-10.57	-10.52	-10.50	-10.48	-9.23	-7.98	-7.88	-7.77	-7.67	-7.56	-7.46	-7.35	-7.25
-5.66	-5.51	-5.91	-6.31	-6.24	-6.18	-5.45	-4.72	-4.57	-4.41	-4.25	-4.10	-3.94	-3.78	-3.63
-2.72	-2.51	-2.30	-2.09	-1.98	-1.88	-1.67	-1.46	-1.25	-1.04	-0.84	-0.63	-0.42	-0.21	0.00
-1.24	-0.72	-0.19	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
-1.07	-0.07	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
-0.90	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
-0.73	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
-0.56	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
-0.39	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
-0.22	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
-0.05	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
and to limit the wgdc to 5 as below

Code:
0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00	0.00
20.00	20.00	20.00	10.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00
20.00	20.00	20.00	10.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00
20.00	20.00	20.00	10.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00
20.00	20.00	20.00	10.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00
20.00	20.00	20.00	10.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00
20.00	20.00	20.00	10.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00
20.00	20.00	20.00	10.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00
20.00	20.00	20.00	10.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00
20.00	20.00	20.00	10.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00
20.00	20.00	20.00	10.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00
20.00	20.00	20.00	10.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00
20.00	20.00	20.00	10.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00
20.00	20.00	20.00	10.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00	5.00
but my AccessPort is still showing an observed max boost of 11psi on the road.

Does this mean the boost target table isn't working and/or the electronic boost control solenoid is faulty? This is still happening even if WGDC is set to 0!

How can I make sure the ECU is tracking/enforcing the boost target accurately? How do I know the Wastegate Dynamics boost error compensation are working?

Any pointer would be appreciated.
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 Old 10-08-2019, 06:38 AM   #2
 
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keep in mind your car is not a software but a mechanic device that first react to the mechanical parts and then, is adjusted by electronic.

Your turbo waste gate has a spring that request a minimum of 7-8psi to start opening but the turbine keep receiving a bit of flow at this point and stabilize somewhere around 11 before anything electric happen.... The only way the ecu can reduce boost below that, is to cut close the throttle body or cut fuel in case of emergency....
If you want to turn your car into n/a, you would need to change mecanic parts....

Also keep in mind your car has a lot more tables than the ones you can see with your cobb....and sometimes more than 1 will affect the same output.

the real question is why would you achieve 0psi ?
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2007 rusted Speed6... in progress...
1993 Ford Probe KLZE 143dB
2012 Mazda3 Gs-sky 6.5l/100 when transporting speed parts
1989 GM 6.2 diesel pickup
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2007 speed3 burned (i'm proud to ran 12.7s with it)

...Because French Canadian...

If you check for leaks and you didn't made a test under compressor pressure, you aren't done checking for leaks....
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 Old 10-13-2019, 02:50 AM   #3
 
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Ah the ATR guide/wiki doesn't explain that hardware limitation so this makes me a noob. But then I see the boost target in the part throttle region in the negative range so I thought it can be tuned to any set point desired.

the real question is why would you achieve 0psi ?
My speed3 is burning a lot of oil even after I replaced the leaky oil cooler/gasket with v2 and my OCC isn't collecting a lot of oil. I also see a lot of black smoke/rich condition during WOT so I thought maybe if I set the car to n/a - low boost to see if I am losing oil through the turbo or not.

Thanks @Jeff23spl

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 Old 10-15-2019, 07:02 AM   #4
 
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You should read a lill more about engines and how turbo works, even if you find a way to 0 out the boost, turbo will keep spinning and be feed by oil and coolant...

i think some diesel turbo work without mechanical spring but it isn't our case.
I never tried but maybe installing a one-way valve on the BPV to only allow vacuum could keep it open to cancel boost....but turbo would probably overspeed....

Anyway, you would better repair it than try to find band aids...
after replacing pcv, if you engine leak down or compression is ok, replace the turbo...

you can find new chra for very cheap these days...
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Mazda for life...or until i can afford something better...

2007 rusted Speed6... in progress...
1993 Ford Probe KLZE 143dB
2012 Mazda3 Gs-sky 6.5l/100 when transporting speed parts
1989 GM 6.2 diesel pickup
Wife drive 2010 CX7

2007 speed3 burned (i'm proud to ran 12.7s with it)

...Because French Canadian...

If you check for leaks and you didn't made a test under compressor pressure, you aren't done checking for leaks....
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