For extreme tunes, I dont know about the PP. Although I do know it is capable of extreme stuff (I know it has made 300 whp on a 1.6 Mini!)

But for me, it worked(s) really well to keep my motor from eating more pistons. Basically, I need to pull timing and add fuel, all at high load and high RPM. I just did a few dyno runs today, and my basic idea of a tune worked out perfect. It added enough fuel and pulled enough timing that I was detonation free and pefectly rich all the way up until I maxed out my MAF. 155 hp and 175 torque.

Now I just need to tune it down so I get better than 10 mph.....

 

Yeah we were going to run that on my brothers Imprezza spraying some juice. I thought it seemed like a practical idea to tune with.