REVIEW!
I had the upgrade done on my car but due to some unforeseen issues took it off a week later. But, my goodness, it was good while it lasted. Torque seemed to improve across the band, but particularly at the high end, and driving on a clear expressway became really, really fun.
In fact, I didn't realise how much good it did until I uninstalled it. You realise just what it was adding to throttle response.
This would be a good point to note that it maaaay not work so well on older cars due to wear and tear issues. The good news is that Rodney is THE MAN and took time out of his busy daily schedule to reverse the process and refund my money, and did it all in good humour with a big smile on face. Good news #2 is that as far as I can discern, the process is entirely reversible should you need to, no harm done.
In fact, really, really the only bad thing to report is his workshop is in #$%^ Bukit Batok which, to some of us, might as well be in Malaysia