Needless to say,this tranforms your Altima into the most unsuspecting sleeper to ever to hit the road.Boost pressure is set at 6.5 psi . Even at this moderate boost level,you can expect years of trouble free operation out of your completely stock engine. And this is just the beginning! We offer a variety of upgrades to allow your Altima to make up to 450WHP on a stock motor.If that is still not enough for you we have built engine packages, fuel system upgrades that will allow you to make in excess of 500WHP! Call us for details. Speed Force Racing can take your stock QR25 Altima and turn it into a tire smoking, turbocharged and intercooled,295WHP sports car, that can not only keep up but even beat, many of the sports cars on the road today. This is not hype, this is a reality! The best part about this is that you keep your stock drivability and reliability.By keeping the boost very low, you will be sure to get a long, trouble free lifespan out of your stock motor.A key benefit of our approach to designing this turbo system is lower cost and ease of installation. On top of that we made it easy to get turbocharged now and then offer upgrades so you can slowly build up your turbo system to the power levels you want. We also utilized a Spearco intercooler to keep the charge air temps to help maximize power and increase safety even further. The Speed Force Racing stage 1 single "tuner" turbo system comes with a 57mm Turbonetics turbocharger, oil feed and drain lines,Tial 38mm wastegate,Evolution Motorsports by-pass valve, 304SS exhaust manifold, 304SS exhaust plumbing,304SS turbo heat shield,Bell intercooler,aluminum intercooler piping with silicone hoses and stainless clamps and all necessary hardware and gaskets needed for a professional installation. This is a "tuner" system and DOES NOT come with injectors or engine management!!!! Please be advised these parts are sold as off road use only! Check with your local and state authorities regarding installation on your pollution controlled vehicle! This system does not fit the 2.5L Coupe!