hi guys i have a vortech full kit, i have it all stock, i want to change the pulley, i have a 380cc injector, do i need to tune the ss box for that? do i need a bigger injectors?

 

i dont have a vortech kit myself (yet) but check this out. it should answer all of your questions.

https://my350z.com/forum/forced-indu...questions.html

for a short answer to your question (disclaimer; im not an expert, i dont have a vortech) you should tune it everytime you change pulleys.

EDIT: this was taken directly from the FAQ "- If you upgrade the pulley, GET THE CAR TUNED! - it's incredibly important if you want your engine to even have a hope of lasting"

 

+1...a tune is required, and the injectors you will need will depend on how much you want to pulley down...

 

ok, thnx guys for u answers, i have one more question, as i told, i have a 380cc injectors if i change them with out change any pulley i ll be safer than if i had the stock injectors, or i need to tune it?

 

anytime you change anything to do with fuel, you must retune.

bigger injectors would be ideal.

 

so if i dont have any person o shop to tune it, i should leave like that?

 

If you dont have a shop to get a tune from, dont touch anything. No pulley no injectors.