I've got my S15 up for sale and have had some viewings. The downfall so far is the turbo lag. I currently have a PTE 5858SP which going off what I've read online falls between a GT3076R and a GT3582R in the Garrett family. The boost doesn't kick in till about 4k rpms. Everyone that's driven it...
http://www.driftworks.com/shop/hks-suction-funnel-turbo-inlet.html
Am interested in this product, has anyone used or given good feedback ffrom it. Obviously more air is good for engine but not all air is good what if it pulls heat and dust etc?