NIStune Soldering - Manual (Page 4)

Soldering/De-soldering equipment
If you are going to be modifying ECU's on a regular basis then there's no way around this. You will need to
invest some decent money in quality equipment. You can get away with the cheap stuff for a while. But once
you use some quality equipment you will realise what I'm on about.
Remember that the reliability or your car (or even worse, somebody else's) is relying on the quality of your
work. If you are not prepared to buy decent equipment then get the job done by somebody who is.
I've been fortunate enough to use the good gear at work for years. I started modifying ECU's at work. But after
awhile I realised that I'd have to bight the bullet and buy some decent solder/desolder equipment for home. So
if you've started looking at buying some professional equipment and nearly died when you saw the prices - I
feel your pain!