holy f**k mate, people here are 10x more experienced than this tuner. Are you listening? Sack the tuner, and get another. If you don't, you will have no power, a shit tune, and eventually a dead engine. And if you rebuild your engine, you are going to need injectors anyway.
I'm a tuner - I have a Stock RB25 and Garret 3037 pushing 314rwkw. SACK YOUR TUNER, and stop defending him. He's a liar and a cheat. I've dealt with plenty just like him.
oh and 370cc injectors are only good for a max of 230rwkw. Anything more, they'll leak, f**k up, and you'll blow your engine.
If you can't understand any more of this 2 page thread, delete your account and go sign up to www.nissansilvia.com and tell them all about your problem.
Please read this post 5 times over so you understand.