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Old March 4th 2010, 17:21
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Wally Wally is offline
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Join Date: Nov 2002
Location: The Netherlands
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Quote:
Originally Posted by paul_f View Post
I have a theory about how to setup these boost maps on the DTA that we are going to try on my friends beetle when he has it running again.

You really need a dyno to set it up, and a ignition cut set on the ECU at the highest boost you will ever want to run.
Paul,

Trust me, its no fun when you have set the overboost (your 'highest boost you will ever want to run') on 1,6 bar/24 psi and repeatingly the ecu cuts out your ignition violently at 1,6 bar (24 psi) whilst trying to run 18/20 psi.
Its either wastegate boost or overboost cut-out. The window is simply too small.

This turbo EASY goes to 2 bar/30 psi on my motor in just a few hundred rpm. It already overshoot to 1,8 bar/26 psi. Áll this is NOT funny I can assure you. How the engine has survived all the violent cut-outs still surprises me.
So, you see, getting an 'attainable boost' really is not my problem .

Quote:
The tuning of the PID will only work if the target map is set to a real value that can actually be reached.
I advice you keep the tru-boost for now Sandeep
I really like DTA and it has one of the most advanced PID control algoritms on the market or so I understood, but personally I haven't seen anyone get i working properly, not even the professionals on the DTA-forum...

So, good luck Paul and let me know when you have succeeded, then I would really bow my head to you
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