IDK about that.
I have a new kit on my car and it came with 600cc injectors.
BTW, I do not experience any of the problems that are constantly mentioned here.
The kit max out at around 460 RWHP, which incidentally it's not very far of what the stock motor can take safely.
The kit as it comes makes 409 RWHP, but the fuel tables shows a very rich condition, then when it's properly tuned goes to 440 RWHP, on a bone stock car (factory exhaust included), not bad at all for a sleeper.
Realistically our motors are safe up to 500 RWHP with a good longevity ahead.
If we like to push the envelope further, then a short block is in order, a TT set up, big intercooler,etc,etc, and 700/800 RWHP is attainable, but I don't think the tranny can take it.
Back in 1992 when I had my second 300ZXTT, I max out the package with stock internals and the car makes over 500 RWHP at 2 bar, it runs very reliable with no breakdowns,but the tranny did not like 473 RWTQ, so powershifting was a big nono.
However I'm always have a lot of fun with the Z cars.
