If you want to email tune your car. I dont think its wise on a heavily modified car. I think its fine if youve just got a
TBE and want a little tickle up. But once you start really modding the car, things like bigger turbos etc, i think you really need to take it to a tuner shop.
I also dont think you should email tune unless you have a fairly good understanding of whats going on, and how to read the logs. Plus a solid mechanical knowledge so you can be sure everything is right 'physically' with the car before you start.
And lastly. I dont think ANYONE should be using throttlehappy / kido or whatever he calls himself now as that guy has blown up way to many engines. Mine melted a piston, but his usual flavour is ringland failures. He talks big complex jargon, and tries to bury you in bullshit when things dont go right.