When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I am running a hks racing suction kit - nice suckign sound it makes - however when I fitted it, it made my wrx sti version iv type-r coupe overboost! but when I fitted my bpm downpipe/hks hiper sort of sorted itself out..