Here's mine, I went through home at lunchtime so I e-mailed it to myself at work
The engine isn't in an R34, it's in an R31 but it's much of a muchness I guess.
Only mods are a full 3" mandrel exhaust from turbo back (non split dump) and high flow cat, Just Jap 600x300 FMIC and a Blitz pod. Stock boost and stock ECU.
It's pretty similar to yours, I wouldn't be worried that yours is weak or anything.
Was yours dyno'd in 4th gear?