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      10-01-2012, 09:57 AM   #15
3V0M
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Drives: F20 M135i LCi
Join Date: Jul 2008
Location: South Africa

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Had the car at another tuning place today. They found the fault thats causing the flat spot. Its the accelerator pedal module.

Its loosing voltage from 5 volts down to 2 volts during the acceleration between 3500rpm and 4300rpm.

Pic of pedal module on Realoem

Finally the flat spot has been resolved, after months of being at a few places to find the fault.

Thanks for your help guys, for what you suggested I should try
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F20 M135i LCi
Ex:E81 130i