Help with EDC15VM boost oscillation

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Help with EDC15VM boost oscillation

Postby winny1 » Fri Oct 27, 2017 1:44 pm

I'm new to this. Understand the process but no pratical ECU nor tuning experience.

Car is an Audi with AEL engine, stock pump and injectors. Big change is:
GTB2260VK VNT turbo, vacuum converted
EDC15VM+ ECU

After tuning, peak power and WOT above 3000 RPM is good. Problem is heavy boost oscillation during normal cruise and between 1700-3000 RPM. About 3 second cycle time, over and over and never settles. Very anoying. Also, idle is too high, it never drops below 1100 RPM. PID issue?

Can anyone help me? I would gladly pay for the service. Attached is the ECU file.
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winny1
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Joined: Thu Jan 19, 2017 10:53 am
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Re: Help with EDC15VM boost oscillation

Postby winny1 » Fri Oct 27, 2017 2:26 pm

Found an interesting thing on http://forums.tdiclub.com/showthread.php?t=476451 "When PID control is on, it is determined by fuel consumption in l/hr." I don't know if it's related, but my trip computer reads 0.0 l/100 km with the new ECU. I was thinking this is minor and can be fixed later, but if this is an input to the PID controller, 0.0 is very far from the actual value.

winny1
New user
 
Posts: 3
Joined: Thu Jan 19, 2017 10:53 am
Location: Sweden


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