SPOMotorsports is sister site. We have all SPO/AVO products for the same $ (or sometimes less).The "What is RalliTeK" area off the front page of www.RalliTek.com will explain more. RalliTek also carries GPMoto and Forza products. We have fabrication and installation shop also. RalliTek does some of the final R&D for AVO Turboworld and SPO on some new products. SPO does not carry RalliTek intake , only Weapon R. SPO will be selling RalliTek intakes soon. In the RalliTeK News area there are full install pics on a car with a MAF sensor. Pleas e let us know if we can help in anyway. Anyone local to Portland, Or. can stop by our showroom/shop.