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rotorhead rotorhead is offline
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Join Date: Jul 2003
Location: Port Macquarie Australia
Posts: 506
My 2c

The tacho acting up is a symptom of a bad Voltage Regulator, you can check this by measuring the voltage across the battery with the engine running. If the VR has failed you will be overvolting (Should read 13.5-14.5v).

Under load you are pumping a lot of fuel into the cylinders and it requires a strong spark to ignite it. It is possible that overvolting your permatune under load is the cause.
Steve Hall
1988 930 Targa
1991 E36 BMW 318i
2004 Mercedes ML270
Old 10-27-2007, 07:01 PM
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