When you say grounding kit, you mean a typical engine grounding kit? Because I have a home-made one. The engine grounds were missing on the car and the starter wouldn't turn because of it. Swapped starters before I realized what was going on. Ended up running a beefy ground where the stocker had failed, then added another to the rear of the engine. There's one on the exhaust from the factory by the catalytic converter that was sheared when I bought the car and never replaced. Maybe I should do that, but from my view I should have at least decent grounding... =/
I'm also excited to see what kind of numbers I get out of this thing. I have high hopes for it. Not numbers-wise but efficiency. I won't ever make any real power because the transmission is a weak link I don't plan on grenading any time soon. The T28 (Pulsar GTi-R) turbo is known good to 300-320 WHP or so at around 18 psi (224 kPa) on the ragged edge. I'm running an 8 psi (155 kPa) wastegate and seem to get boost creep up to 11 psi (175 kPa). Stupid free flowing downpipe is making the turbine look much more appealing than the wastegate.
Most people make around 215 WHP or so with 11 psi. I know I'm making over 240 to the wheels, maybe a lot more. We'll see when I hit the dyno. =]
Then comes the progressive boost control.