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2 things...
First off, rule of thumb on any street engine is 10psi for every 1K of RPM. So at idle if the car is running at 750RPM, 1 bar (or 10psi) is more than adequate.
Secondly, how can you be sure your VDO is accurate? Get a separate gauge, plug it in and see what it reads.
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1985 Carrera Targa in the fastest color......Black........Growing list of goodies now includes SW Chip, M&K premuffler, Sport muffler, DME update, etc.
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