Quote:
Originally Posted by tonyduc
the brakes stop well but with some effort.
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There should be some effort involved, 'coz it's a sports car... The harder the pedal, the easier it is to modulate braking effort, - and less pedal travel (sink) as pressure is varied, the better for heel'n'toe.
Traditional test for a brake booster is to, before the first start of the day, pump the brakes up until the pedal is firm and hold it, then start the car. If the pedal drops slightly as the motor provides vacuum, the booster is nominally working (might still have other issues, but you're getting vacuum to the servo and it is holding it, so should work).