all this into a supra

Engine HKS Super Sequential Blow Off Valve HKS 65mm Steel BOV Flange Custom Spearco Core FMIC HKS Cold Intake Powerhouse Racing Electric Unorthodox Racing Lightened Underdrive Pulley with Crank Pulley Fuel: Stock 550 injectors + 12Volt mod Electronics: HKS EVC4 (Electronic Valve Controller) HKS VPC (Vein Pressure Converter) HKS BCC HKS Turbo Timer Interior: Apexi super glov 60mm Boost 60mm EGT Gauge - Warning Light 60mm Oil Pressure Gauge - Suspension/Brakes: OEM Shocks with Tanbie G210 REAR PowerSlot Rotors Goodriche/SMC SS Brake Lines all 4.



How much will those mods (engine ones) add in HP to the 2jz engine in a 97 MKIV? Any estimates?

Instead of Installing those parts. Get a Boost Controler and raise the boost to 1-1.2 Bar (assuming you have stock CT12 turbos), Remove the TRAC fuse ( The Trac Fuse limits you max speed to 155mph, removing the fuse will cause no damage to the car, but it will allow you to reach true maximum speed). The FMIC is sufficient enough for upwards of 350 horsepower, so i wouldnt spend money on another FMIC unless you planned on making 450-500+ hp. Youll need a BCC as well. You can also do a TTC (True Twin Conversion) Which changes the seqeuntial setup of your turbos, so that they both kick on at the same time, increasing power in the mid range. Id do research if was you before i spent money on anything.

your looking at maybe 450, but not quite sure. It all depends on other things. Some of that sounds like a waste of money in my oppinion but I'm not going to get into that. Some things will throw off power numbers to such as what dyno your on, sea level, and temperatures outside or in the room. My advise is set a goal for the car wether it's power or track times, go out and give it a shot, and check and see what else you have to do to get to your goal.