Having my car tuned next week and I'm deciding on injectors. I'm running 6lbs on a jrsc (ITR). I was initially looking at RC440's because they seem pretty standard based on my hp, but I can get Injector dynamics (bosch) 725's for $50 more. Then I realized I could split the difference and go 525's through Precision and save some coin (about $125). Are the 725's overkill?

 

525 are good for about 300 or a lil more, with your setup that seems reasonable, then again with the 725's you have room to improve and make more hp.

 

There's no reason to go any larger than a 550cc injector on a JRSC'd ITR. You simply wont make enough power to justify the extra injector. Save your money and get something smaller...you could probably get away with the 440s...i dont recall the last time i saw a near-300whp JRSC car