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Author Topic: cwmdapp AFR!  (Read 12962 times)
Renegade187
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« on: January 24, 2026, 09:34:21 AM »

Hi guys

I have been trying to find the right duty cycles for my GT28 setup and I am struggling. This is a 2 year journey and I am at a wits end. Numerous flashes and I just cant get it right.
I am now trying the CWMDAPP to 8 and to log the DRAPP at each DC %. When I activated this, the AFR dropped to 10 and I an scared to drive the car with this low a AFR. I have tried doing this 2 years ago and now again. Please HELP

Is it fine to do the runs at each DC % or is my concern valid? Surely other who have used the CWMDAPP function has some experience to share please
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VWvinny
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I live on turbo pressure—always ready to boost


« Reply #1 on: January 24, 2026, 12:10:16 PM »

Hi guys

I have been trying to find the right duty cycles for my GT28 setup and I am struggling. This is a 2 year journey and I am at a wits end. Numerous flashes and I just cant get it right.
I am now trying the CWMDAPP to 8 and to log the DRAPP at each DC %. When I activated this, the AFR dropped to 10 and I an scared to drive the car with this low a AFR. I have tried doing this 2 years ago and now again. Please HELP

Is it fine to do the runs at each DC % or is my concern valid? Surely other who have used the CWMDAPP function has some experience to share please

Please share your ORG and modified file so i can check it.
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_nameless
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« Reply #2 on: January 24, 2026, 02:26:51 PM »

I've never had this problem, are you sure you are modifying the correct maps?
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Renegade187
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« Reply #3 on: January 26, 2026, 10:13:40 AM »

Thanks for the replies guys. I have included both attachments below.
this is the ME7.6.2 on an Opel/Vauxhall VXR/OPC
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Renegade187
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« Reply #4 on: January 27, 2026, 06:55:13 AM »

Hi guys

i actually found the problem the map reference was off by 1 position i.e -1. Change the reference to 1 forward and found CWMDAPP.
The previous map that I was changing did in fact switch off the lambda coordination.

Dialling in KFURL for a big turbo and I off to do the linear runs for the DRL!
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