ok so my brother has a brand new Apexi Vtec Air Flow Converter in the box. He totalled his car a few weeks ago and said i could have it for FREE! Now i just wanna know if its worth it to install this on my jdm GSR swapped ex. im currently running an ITR ecu. i know the VAFC allows you to change vtec, which isnt really neccessary since im pretty much stock and ITR ecu already has vtec at 5000rpm if i remember correctly. does the VAFC have any other controls? what are the pros and cons? would you install it or not? thanks