any one ever used a
Apexi Boost Controller - Apexi AVC-R Ditigal Boost Controller http://www.modacar.com/products/Toyota/Supra/MODAAPE thats the web page. is that any good or should i not waste my money??? this is gonna sound dumb but what does the boost controller do i mean i roughly get it but i wanna know if it would ad any HP or anything like that