any infos about it? it comes without a belt so which belt should i use with it? the stock one or an aftermarket one?

 

go google.com and paste this in :

OBX underdrive crank pulley site:g35driver.com

 

or you can buy my stillen oem size pulley

 

I bought the obx pulley but still being shipped so i want to know how i will install it???!!!

 

if you have to ask how to install it its probably better off you let a pro do it...endless possibilities of destroying your engine if done wrong

 

yep sure i wont install it myself, a pro will do it for me but if it needs another belt i should buy it from now cuz it needs time to b shipped and already the pulley has been shipped... if it needs another belt this means the pulley will do nothing for the moment

 

When I had mine ( never installed it ) I was told that it uses the stock belt.

 

U had the obx red undrive pulley nd it used the stock belt? did u feel any hp gain or any change? why u didnt install it?

 

I couldn't tell ya if there was any gains, as I never installed it....

At the time, I decided that eventually I was gonna go a different route, so I sold it...