im doing an ls/vtec build with a gsr head with 115k miles. i will be running skunk2 pro 1+ or 2+ cams with skunk 2 titanium springs and retainers...is it necessary to upgrade the valves?

 

no. but if ur gonna pull the head off then i would go with rev valves.

 

Ive never had a problem with ITR valves. I have however had bad luck with Rev.
I would stick to oem valves if it were me. They do their job just fine

 

i did in my build and installed skunk 2 high compression valves

 

My JDMITR has CTR PCT pistons, Mugen 2-layer gasket, Toda valve train, and in order to run pro2, Skunk2 told me to use pro series rather than their standard skunk dvs. They made it sound like TODA VT and their regular SKUNK2 VT was JUNK. I still need to tune but I'm still using my Toda vt. As far as valves, I'm still using my stock valves. My first set up was with Toda A2 and I daily drive my Hatch with AC.

 

ok i mean it all depends on how they look but i think im gonna stick with the vales in there...hey if i drop one its an excuse for internals and boost