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Old 07-07-2005, 10:43 AM   #1
jblaine
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Default Odd power-making problem. TGV CEL-related?

Yes, I intend to try to capture what is going on via logging, but for now I thought I would throw this out to see if anyone has any ideas.

My guess is that this is related to the TGV CELs I have, but I would like others to confirm that.

Preliminary Info:

EJ207 shortblock
WRX heads
16G
550cc pinks
Walbro
TB Exhaust with 1 cat
JDM v7 STI TMIC
V8 TGV-less intake manifold
Turbo inlet hose
Vishnu EcuTek reflash (asked them for a flash for my mods... who knows what they flashed...)

Now and then (details of circumstances unknown), I will got WOT, my boost gauge builds up as normal to 16psi or so, but the car feels to be running at about half power.

If I pull over, simply turn off the car, and turn it back on, the problem is gone and the car rips.
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Old 07-07-2005, 01:19 PM   #2
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If you have TGV CELs, that's probably your problem. From what I have heard in my TGV research, the TGV CELs are "bad" CELs as they throw your car into limp mode, much like the uppipe CEL.
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Old 07-07-2005, 03:28 PM   #3
phunkdup
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Which TGV cel do you have? Some are bad, some are fairly harmless. If it's stuck closed you'll have a problem.
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Old 07-07-2005, 03:30 PM   #4
jblaine
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I have all of them. I have zero TGV housings and the sensors' electrical harnesses hanging in the engine bay.
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Old 07-07-2005, 05:35 PM   #5
phunkdup
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Quote:
Originally Posted by jblaine
I have all of them. I have zero TGV housings and the sensors' electrical harnesses hanging in the engine bay.
Oh then I guess a stuck TGV isn't the problem.

APS makes a plate that you bolt the sensors and actuators to so you can fool the ECU into thinking you still have TGVs. I don't know of any electrical fix other than a reflash that defeats the cels.
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Old 07-07-2005, 06:14 PM   #6
jblaine
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EcuTek reflashes are not capable of disabling TGV CELs from what I understand (yet). I'd heard this, but confirmed it by asking specifically for my TGV CELs to be disabled when I sent my ECU to Vishnu 2 weeks ago -- throws them.

Looks like it's time to proceed with hooking the Hydra Nemesis back up (which couldn't care less about the TGVs of course), but if anyone has more info, please share it.
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Old 07-07-2005, 09:27 PM   #7
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Ecutek now offers a feature to remove the TGV codes. In addition to using this rom file you will still need to use a resistor on the TGV harness. These resistors cost $2 and install very easy. It sounds like you either have the old rom code or you have the new one that includes the TGV fix but you did not add the resistors. Jeff Sponaugle is the person that worked on this with ecutek and is the one that informed me of the need for the resistors.

Cya

Clark
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