Set about removing old one & suceeded in mangling my thumb


OK, now what do I do? Car jacked up, old box still on, one hand virtually useless & it's 10:00pm?
Gave up & took her in as it was, (new back box & exhust clamp in boot), put on my best 'think positive' voice & body language and asked them to fit it for me & re-test as arranged.
Worked


It's maybe a bit too early to be sure, but I'm fairly certain it was recording a couple of mpg more on the way home
