done my last one with a solder sucker & a fine point 40w iron, yes its fiddly & as TB says the 0v needs a bit more of a warm up but not too bad 
I was a bit concerned about damaging the O/E chip, so didn't go too heavy with the heat.
Just as well, the O/E chip is back in for now, until I get my pump back from an overhaul.
The new chip was amplifying a fault with the pump. Still gave a significant increase in power and MPG but the pump issue was causing a judder between 1500 to 2000 rpm.
Fitted a 2nd hand pump but that too has a fault. It's not too bad with the O/E chip fitted, so the only time the car is off the road is a few hours whilst I'm refitting the pump.
Getting a bit impatient now, but I'm getting a good deal on the pump overhaul price, so can't complain really, and it's not as if the car is off the road.
I'm like a kid on crimbo eve, waiting for Santa to call.
