Well, today I stripped the 'slow' one off the car and carefully fannied about with it.
Actually, I couldn't quite get it off as its ball joint seemed firmly attached and looked likely to break if forced.
I refitted it carefully and cable tied the vacuum pipe.
Started up 5 times and on each occasion the bellows collapsed (as it should) but not quite as quickly as the other. Maybe took 3-4 secs before it collapsed.
However, it collapsed 100% of the time and perhaps it will get quicker now it's used to moving.
The car is definately more responsive at small throttle openings now. I rarely see 5200 rpm, so frankly its responsiveness at low speed is of more value.
It's got better acceleration now with the same pedal pressure, so likely better on fuel?
I fitted a new MAF also, as my own was plainly not right.
Car seems happy. Me happy!
