The T3/T4 turbocharger is designed to be used on engines displacing 1.6L-2.5L and is typically good for around 400HP. They are also commonly used in twin turbo applications. In this case those figures would be doubled 3.2L-5.0L engines up to 800HP.
Horsepower ratings are generally meant to express the turbochargers maximum airflow capability. Recommended boost pressures are 7psi.
5 Bar to 21psi(1.5 Bar) and boost pressures should not exceed 30psi(2 Bar). Exceeding 21psi(1.5 Bar) of boost pressure can significantly reduce a turbochargers lifespan.
Generally speaking 14psi(1 Bar) is good for a 100% increase in horsepower from a naturally aspirated engine. Also factory non-turbo engines without forged internal components on high octane pump gas (91-92 octane) it is not recommended exceeding 7psi. Doing so could result in damaging your engine. Specifics and Features: 100% brand new Capable of boosting horse power up to 300+ BHP High quality material, cast housing with durable steel 4 bolt exhaust flange Standard T3 5 bolt downpipe flange pattern Intake inlet & outlet: 3" & 2". 5 Inducer: 50.5 Exducer: 76. 63 Inducer: 65.5 Exducer: 55.9. Includes: 1 X T04E Turbocharger Notes: Professional installation is highly recommended (No Instruction Included) This is universal application turbo, so modification might be required for some vehicles. We do not accept credit cards directly. We do not accept escrow payments. This product is warehoused in California, USA.63 A/R 57 TRIM TURBO/TURBOCHARGER COMPRESSOR 400+HP BOOST STAGE 3" is in sale since Thursday, May 10, 2018. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Turbos, Nitrous, Superchargers\Turbo Chargers & Parts".
The seller is "royal-auto-part" and is located in Los Angeles, California. This item can be shipped to United States, Canada, United Kingdom, Australia, Mexico, Germany, Japan, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Greece, Portugal, Cyprus, Slovenia, Sweden, South Korea, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Austria, Bahamas, Israel, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Dominican republic, Panama, Viet nam.