Hi every 1,,,I need a big help. To continue my project as future modification I bought a new hybrid turbo, but I uncertainty of it please help. my Qs:

1- T4OE TURBOCHARGER brand name .50 A/R COMPRESSOR .63 A/R TURBINE, is this a good turbo to achieve 400hp on my r33? (This is not XS power or SSAUTOCHROME brand). However if you do a search on sxoc or honda sites some horror stories about it.

2- THIS TURBO CAN EASILY DO 25 psi, How much boost I can set (with internal stock)

1997 Nissan Skyline GTSt-33 Series 2

Engine Modifications:Denso 550cc InjectorsAftermarket Boost Controller and Boost Gage @12 Psi Apex S-AFC HKS Air FiltersFGK 3 Inch Exhaust SystemBosch Fuel PumpAdvance Timing DegreeNarrow Band A/F Ratio GaugeFuel Pressure GaugeAftermarket Front Mount Intercooler Aftermarket Turbo timerStandard TurbochargerStandard ECUCopper NGK 7ES Spark Plugs1 Liter Baffled SumpNismo Fuel Pressure Regulator

Transmission/Driveline Modifications:OS Twin plate full setAVC 16 “wheelsBridgestone 225/50/16

Suspension Modifications:Tein coil over suspension

Future ModificationsHKS Adjustable cam gearsExternal WastegateOil CoolerZ32 Fuel FilterZ32 Air Flow Meters

Is this for an RB25DET or RB26DETT? I'm assuming it's an RB25 as you have a GTS-T. I personally think this is a good turbo for large top end power. You'll have to look specifically at a compressor map to see how it fits your motor and power goals. There is a thread in the RB forum, which is where this thread should probably be, named "detailed look at turbo sizing".

zerothread/174104

This should get you to where you want to be, but in short, I think that turbo size should be good for more than 400hp. If you are only shooting for 400, a smaller turbo might suit your setup better.