CTXona 5757 Turbo PNP Toyota 3SGTE CT26 CT20b Upgrade Celica MR-2
CTXona 5757 PNP (Plug-and-Play) upgrade is a high-performance hybrid turbocharger designed for the Toyota 3S-GTE platform (found in the Celica GT-Four and MR2 Turbo). It is specifically engineered to bolt directly onto the factory “Twin Entry” manifold and downpipe, replacing the aging CT26 or CT20b units while significantly increasing airflow capacity.
Core Performance Specifications
The “5757” designation typically refers to a 57mm inducer compressor wheel paired with a matching high-flow turbine wheel, often housed in a CNC-machined original CT-series casing.
-
Horsepower Potential: Capable of supporting 350–420 hp (depending on supporting mods like fuel, intercooling, and tuning).
-
Compressor Wheel: 57mm Billet wheel (usually 6+6 or 11+0 blade design) with extended tip technology for improved spool and higher pressure ratios.
-
Turbine Wheel: Upgraded 9-blade or 10-blade Inconel wheel. This is a critical safety upgrade, as the JDM CT20b factory ceramic wheels are prone to shattering at boost levels above 1.2 bar.
-
Cooling: Standard oil and water-cooled center section.
Platform Compatibility
| Engine Generation | Vehicle | Fitment Notes |
| Gen 2 3S-GTE | Celica ST185 / SW20 MR2 (pre-’93) | Replaces the original heavy-cast CT26; provides much better top-end breath. |
| Gen 3 3S-GTE | Celica ST205 / SW20 MR2 (post-’94) | Replaces the CT20b; keeps the factory-style twin-entry spool characteristics but adds durability. |
Key Installation Advantages
-
Direct Bolt-On: Retains the factory oil and water lines, though most kits include refreshed braided lines for reliability.
-
Internal Wastegate: Usually features a heavy-duty adjustable internal wastegate actuator (often pre-set to 0.8 or 1.0 bar) to prevent the “boost creep” common with older CT26 units.
-
Stealth Factor: Because it uses modified factory housings, the engine bay retains an OEM appearance—ideal for passing visual inspections or maintaining a sleeper look.
Recommended Supporting Mods
To make the most of the 5757’s flow without risking the engine:
-
Fueling: Upgraded 540cc+ injectors (standard on Gen 3, but required for Gen 2).
-
Exhaust: A full 3-inch turbo-back exhaust system is necessary to reduce backpressure on the larger turbine.
-
Intercooling: The factory top-mount intercooler (ST185) should be replaced with a front-mount (FMIC) or a high-efficiency water-to-air unit to manage the increased heat.
Reviews
There are no reviews yet.