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98 gc8 lacking in power

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Old 07 May 2018, 09:13 AM
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scoobynshag
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Default 98 gc8 lacking in power

well after nearly 2 years I finally got my car back working, only issue is it seems down on power A LOT!!!
its running a race dynamics esl 8s Ecu with 2 maps and maffless, 440 injectors, everything except the knock sensor has been changed, which is throwing up the CEL, it’s also running a VF23 turbo off a 22b which is very low mileage. It smells like it’s running rich but no black smoke, it has the standard cat on which I think is caput. Any ideas as this car should fly, my silver gc8 has a td05 and that flew compared to this and it had a standard ecu.

Last edited by scoobynshag; 07 May 2018 at 09:37 AM.
Old 07 May 2018, 10:09 AM
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1509joe
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If your knock sensor is throwing a code get another one from the same model. The knock sensor is imho the most important sensor on a Subaru and will cut power if not working.
Old 07 May 2018, 10:09 AM
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ossett2k2
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Have you tried switching maps?
What did you have map1 and map2 set for,high/low boost?
Also if the cat has collapsed this will very restrictive.

Last edited by ossett2k2; 07 May 2018 at 10:10 AM.
Old 07 May 2018, 10:53 AM
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Originally Posted by ossett2k2
Have you tried switching maps?
What did you have map1 and map2 set for,high/low boost?
Also if the cat has collapsed this will very restrictive.
tried map switching, makes little or no difference, car sounds like an issue
Old 07 May 2018, 10:56 AM
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Originally Posted by 1509joe
If your knock sensor is throwing a code get another one from the same model. The knock sensor is imho the most important sensor on a Subaru and will cut power if not working.
i do have a new genuine one but it has the wrong plug for my car ev n though it says it fits, will have to get another one
Old 07 May 2018, 11:19 AM
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1509joe
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If your knock sensor is throwing a fault iirc the ecu dumps fuel in to safeguard the engine which in turn will destroy your cat so I would get the knock sensor sorted before using the the car.
Old 07 May 2018, 11:58 AM
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Originally Posted by 1509joe
If your knock sensor is throwing a fault iirc the ecu dumps fuel in to safeguard the engine which in turn will destroy your cat so I would get the knock sensor sorted before using the the car.
ill get that done as a priority
Old 07 May 2018, 12:06 PM
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