I want to run 14 pounds of boost from my Volvo S70 GLT And I was wondering how big of injectors. I should run for the tune.

 

what turbo are you planning to use? Most GLTs have an light pressure turbo like a 13T so it may not be able to produce 14 PSI. Another way of looking at this is what is your HP target and who's tune are you planning on using? Most quality tuning shops have blue prints to match key components like turbo size (ie 13 vs 16 vs 18 etc), larger downpipe/intercooler, larger injectors. Bosch color codes the injectors by capacity so you can compare orange to white to green etc based on your overall design. You may be able to find some posts on Turbobricks and Swedespeed that talk to this as well as IPD and FCP who sell replacements.