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Hardest bit is getting the old rubber out, pressing in the polybushes is relatively easy,
can't see how they couldn't do it, unless they couldn't be bothered.
I had the same thing with my K-Tec / Vibratechnics engine and gearbox mounts, from what people had said I was expecting a jack hammer under the bonnet, when in fact I felt nothing other than solid acceleration from a well secured drive train.
It didn't cause vibrations in mine and budget mounts usually go wrong with a month,
even my uprated engine mounts which people say are unbearable didn't cause any extra vibrations in mine.
The dog bone mount can look perfect but be as soft as chewing gum,
for the price of a new one you can buy Powerflex bushes that won't wear out as quick.
Must be the way I drive then, 70-80 on the motorway,
but around town I drive normally and I still get sh*t mpg, maybe it's because of the 98ron map or something.
Not long, the hardest bit is getting to the bolts under the car,
you'll need a deep socket set and the car has top be jacked up to get at the ones near the handbrake,
it does make it difficult to slide the seats back and forth as the runners rub on the carpet.
I was under the impression that a decent filter, exhaust and a remap by someone that knows what they're doing would take a standard WRX to around 260bhp, or is it the case that even at that power it's still slow because they're heavy cars?