ST205 3SGTE tuning Options

[nickst205]

I REALLY want to retune my engine.

Currently running an Apexi power FC @ 16.2psi

It's running rich (apparently this is to preserve engine life/make it safer?) and has pretty bad vacuum leak (BOV goes pshhhh for ages after i take foot of the gas)

Massive lag until agout 4500-5000rpm when all hell breaks loose

If it makes any difference engine is bone stock except for Apexi air intake and full 3" HKS Silent Hipower exhaust with custom downpipe. done about 200kms (treated like a queen though)

Running 183kwatw (i thought it was 193, turns out it's not according to last owner)

So what I'm asking (just because I like to know things before I do them), is:

1) how much coin should I allocate for a retune?
2) where do people recommend I get it done? - last place was Torque Performance I believe and to be honest I'm not overly happy with what they achieved
3) What should I consider when tuning and what should I aim for (ie psi and kw) - I heard going beyond 16psi is detrimental to stock internals.

1 + 2 only really apply to other kiwis i guess, but number 3 bring on the info!

If anybody had a few words on the matter that'd be choice, thank you