Not building boost with MS2E (builds boost with reflashed ECU)
12-02-2013, 04:27 PM
#1
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Not building boost with MS2E (builds boost with reflashed ECU)
Guys, I have a 2002 LS with a BEGi Shanghai kit with the following:
The car holds 17mm/hg vacuum and boosts fine with the BEGi ECU reflash (using stock AIT).
I switched the ECU to my Rev-built MS2E, calibrated my TPS, connected the yellow wire for my wideband, changed the wiring for the GM AIT sensor, used the basemap timing and found that it doesn't build any boost at all (maybe 0.5 psi).
AFR is good from the base VE table, actually a little bit on the rich side.
I understand that it is the base map, base ignition table and VE table and all and that VVT is gone.
It starts fine, idles fine (12.5 AFR). I can't do VEAL at the moment because all it would do is the area below 100kpa (non-boost area).
Can timing totally eliminate boost?
The car accelerates like a normally-aspirated car and the boost gauge simply refuses to move past 0 psi.
I tried it with EGR deactivated and activated in project properties, but no dice.
Again, if I simply swap back to the reflashed OEM ecu (I kept the MAF on), I experience the awesome boostlies that these cars should have came with from the factory.
Attached are the msq and short data log file from last night.
Thanks for looking.
- RX8 EV14 Injectors
- BEGi ECU Reflash
- AEM UEGO
- Ebay Recirculating BOV
- GM IAT on IC Cold-side endtank
- Ebay Catback
- Stock Catalytic Converter
- EGR connected
The car holds 17mm/hg vacuum and boosts fine with the BEGi ECU reflash (using stock AIT).
I switched the ECU to my Rev-built MS2E, calibrated my TPS, connected the yellow wire for my wideband, changed the wiring for the GM AIT sensor, used the basemap timing and found that it doesn't build any boost at all (maybe 0.5 psi).
AFR is good from the base VE table, actually a little bit on the rich side.
I understand that it is the base map, base ignition table and VE table and all and that VVT is gone.
It starts fine, idles fine (12.5 AFR). I can't do VEAL at the moment because all it would do is the area below 100kpa (non-boost area).
Can timing totally eliminate boost?
The car accelerates like a normally-aspirated car and the boost gauge simply refuses to move past 0 psi.
I tried it with EGR deactivated and activated in project properties, but no dice.
Again, if I simply swap back to the reflashed OEM ecu (I kept the MAF on), I experience the awesome boostlies that these cars should have came with from the factory.
Attached are the msq and short data log file from last night.
Thanks for looking.
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12-02-2013, 05:20 PM
#5
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Only thing I can think of is EGR. It's hooked up.
But would it fail in open position? Also, if it's failing in open, why work with the reflash?
Can VVT make this much difference?
But would it fail in open position? Also, if it's failing in open, why work with the reflash?
Can VVT make this much difference?
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12-03-2013, 09:57 AM
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Ben, if this is the root cause, I owe you a case of your favorite beer or something. Seriously.
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12-03-2013, 10:18 AM
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If it was set to zero...it wouldn't simply accelerate normally would it.
Wouldn't you feel some sort of Spark/fuel cut when boost started to climb?
EDIT: /zeroMSexperience...
Wouldn't you feel some sort of Spark/fuel cut when boost started to climb?
EDIT: /zeroMSexperience...
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12-03-2013, 10:39 AM
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Here's what it's currently set at. I don't see zero in TS for max boost values in overboost protection.
Is it the Hysteresis low and high? That's currently set to 10.
Is it the Hysteresis low and high? That's currently set to 10.
Last edited by bogly; 12-03-2013 at 10:44 AM. Reason: clarity
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12-03-2013, 11:25 AM
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I have a problem then, because that screenshot above is what I am seeing on my TS laptop with TS pointing to the same project and msq file.
However, when I open said tune on my work computer, it shows 0.0 for max boost (matches what you are seeing).
If I download the tune from this thread into my TS laptop and open it, I get the values from my screenshot above (set to 176kpa abd 220 kpa).
Grrrr.
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12-03-2013, 04:26 PM
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Working with EFI analytics to see what's up...and they suggested updating the firmware to 3.3.0
According to Rev, no firmware update is needed for his units, which I think is awesome (shows that they are the closest thing to plug n' play).
According to Rev, no firmware update is needed for his units, which I think is awesome (shows that they are the closest thing to plug n' play).
Last edited by bogly; 12-03-2013 at 05:11 PM.
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