With the fourth generation of the Supra, Toyota took a big leap in the direction of a more serious high performance car. Again using subframe, suspension and drivetrain assemblies from the Z30 Soarer (Lexus SC300/400), test model pre-production started in December 1992 with 20 models, and official mass production began in April 1993.[12] The new Supra was completely redesigned, with rounded body styling and featured two new engines: a naturally aspirated 2JZ-GE producing 220 hp (164 kW; 223 PS) at 5800 rpm and 210 ft·lb (280 N·m) at 4800 rpm of torque and a twin turbocharged 2JZ-GTE making 276 hp (206 kW; 280 PS) and 318 ft·lb (431 N·m) of torque for the Japanese version. For the export model (America/Europe) Toyota upgraded the Supra turbo's engine (smaller, steel wheeled turbochargers, bigger fuel injectors, etc.). This increased the power output to 320 hp (239 kW; 324 PS) at 5600 rpm and 315 ft·lb (427 N·m) at 4000 rpm. The turbocharged variant could achieve 0–60 mph in as low as 4.6 seconds and 1/4 mile (402 m) in 13.1 seconds at 109 mph (175 km/h)[2]. The turbo version was tested to reach over 280 km/h (174 mph) all-stock, but the cars are restricted to just 180 km/h (112 mph) in Japan and 250 km/h (155 mph) elsewhere. European versions also had an air intake on the bonnet (hood). Drag coefficient is .31 for the naturally aspirated models and .32 for the turbo models and N/A's with the rear spoiler.

The MKIV Supra's twin turbos operated in sequential mode instead of the more common parallel mode. The sequential setup featured a pair of CT-12b turbos (for the usdm market, JDM market was CT20/Ct20A with variations- some are ceramic- notorious, some are not. For UK and USDM market steel blades (CT-12b).

Some differences in the OEM twin turbo JDM and USDM/UKDM JZA80 turbine setups include:

JDM (CT20) has 3 bolt flanges for turbo to header. USDM/UKDM (CT12) is 4 bolt.
JDM (CT20) has no pressure bypass X-over pipe, USDM/UKDM (CT12) does.
JDM (CT20) has oval exhaust header to turbo ports and 3" downpipe, some are 2 bolt, some are 3 bolt.
USDM/UKDM (CT12) has 4" downpipe outlet, and full bore round ports from exhaust header to turbo.

References
^ a b c d "1981 Toyota Celica Supra Road Test Data & Specifications" (JPG). Supra vs. Supra. Motor Trend. February 1982. pp. pg. 46. http://www.celicasupra.com/images/MT2-82-3.jpg. Retrieved 2006-12-22.
^ a b c d "Specifications and test results" (JPG). Toyota Supra Turbo: Think of it as a Lexus for Smokey Yunick. Car and Driver. March 1993. pp. pg. 41. http://mkiv.com/publications/car&driver/3_93/6-cd3-93.jpg. Retrieved 2006-12-22.
^ a b "FAQ: What is the history of the Toyota Supra?". toyota.com. http://toyota.custhelp.com/cgi-bin/toyota.cfg/php/enduser/std_adp.php?p_faqid=4077&p_created=990830954&p_sid=bwsHAPpi&p_accessibility=0. Retrieved 2006-12-22.
^ a b c d e f "Official Toyota Supra Web Site". Toyota.com. http://www.toyota.com/html/shop/vehicles/supra.html. Retrieved 2006-12-22.
^ a b "The History Of Toyota's M Engines". eds.au.com. http://www4.tpgi.com.au/users/loats/technical/mhistory/mhistory.html. Retrieved 2006-12-22.
^ a b "MK I Celica Supra History". celicasupra.com. http://www.celicasupra.com/historymki.htm. Retrieved 2006-12-22.
^ "1982 Toyota Celica Specifications" (JPG). Toyota Celica Supra. Car and Driver. October 1981. pp. pg. 42. http://www.celicasupra.com/images/cd10-81-7.jpg. Retrieved 2006-12-22.
^ "Car and Driver test results" (JPG). Having it All. Car and Driver. May 1985. pp. pg. 74. http://www.celicasupra.com/images/CD5-85-7.jpg. Retrieved 2006-12-22.
^ "1992 Toyota Supra specs, auto safety at Edmunds". edmunds.com. http://www.edmunds.com/used/1992/toyota/supra/11629/specs.html. Retrieved 2006-12-22.
^ "FSM" (PDF). Toyota MK3 Supra: Factory Service Manual. 1990. http://www.importworkshop.com/files/manuals/toyota/MK3_1990_Toyota_Supra.pdf. Retrieved 2008-01-11.
^ "Tech Data" (JPG). Toyota Supra Turbo: Leaner and Meaner. Motor Trend. March 1993. pp. pg. 57. http://mkiv.com/publications/motor_trend/3_93/MotorTrend-Mar-93-4.jpg. Retrieved 2006-12-22.
^ "Toyota Supra MKIV : MKIV Specifications". 2007-10-22. http://mkiv.supras.org.nz/specs.htm. Retrieved 2009-02-09.
^ "Lexus LF-A". lexus.ca. http://www.lexus.ca/lexus/experience/en/home/concept/concept_vehicles.jsp. Retrieved 2006-12-22.
^ "2008 Toyota Supra". topspeed.com. http://www.topspeed.com/cars/toyota/toyota-supra-ar6872.html. Retrieved 2006-12-22.
^ "Future Products--Toyota". AutoWeek. 2006-08-15. http://www.autoweek.com/apps/pbcs.dll/article?AID=/20060815/FREE/60814015/1041/TOC01ARCHIVE. Retrieved 2006-12-22.
^ a b Report: No New Supra - Left Lane News article stating no future Supra is currently being planned
^ 2007 Toyota FT-HS Concept - Latest News, Features, and Auto Show Coverage - Automobile Magazine:
^ It's only a concept car for the Detroit auto show, but it might become the next Supra - accessed December 27, 2006
^ Toyota FT-HS Concept is a Go For 2009 Automobile Magazine accessed on May 29, 2007
^ Peter Lyon (2009-01-16). "Moving Forward: Nissan GT-R Sedan, SUV and Lexus LF-A Still in the Works". Edmunds.com. http://www.edmunds.com/insideline/do/News/articleId=139967. Retrieved 2009-01-18. "News out of Toyota City also reveals that the V6 Supra replacement is still in the pipeline and is set for an early 2011 debut."
^ Damon Lavrinc (6 October 2009). "Toyko 2009 Preview: Toyota FT-86 Concept brings back the Hachi-Roku". http://www.autoblog.com/2009/10/06/toyko-2009-preview-toyota-ft-86-concept-brings-back-the-hachiro/.