I have a set of blox type a's and am wondering if i can just drop in a set of itr dual valvesprings and go, figured it would be a decent solution because i have a cam that will go to the 8400 range or so.

Also i looked at my type r throttle body opened it up and noticed the blox isnt 64 at all. am i correct?

 

ITR valve springs will allow you to safely rev higher than GSR's but you need a chipped (preferably socketed) ECU that can have a tune burnt onto it at a dyno-tuner's shop. Otherwise, you can run those cams with stock valve springs if you are only reving to 8100 rpms.

 

i have them tuned now on ectune. and i would retune after, just seeing if dropping em in would be worth it