2GR-FKS Horsepower Variations

According to Wikipedia.....

The 2GR-FKS is a 3.5-litre (3,456 cc), 24-valve DOHC (with VVT-iW and VVT-i) V6 engine that combines the D-4S system from the 2GR-FSE with the simulated on-demand Atkinson cycle used in the 2UR-GSE and 8AR-FTS engines.[13] The 2GR-FKS and the 2GR-FXS selectively use direct and port injection.[14][15] This engine first appeared in the 2015 Lexus RX 350.

Applications (calendar years):

• 2015–2023 Toyota Tacoma (GRN305/310/325/330)[16] 278 hp (207 kW; 282 PS)
• 2015–2020 Lexus GS 350 (GRL12/16)[17] 311 hp (315 PS; 232 kW)
• 2015–2022 Lexus RX 350 (GGL20/25)[18] 295 hp (220 kW; 299 PS)
• 2017–present Lexus LS 350 (GSF50) 318 PS (234 kW; 314 hp) (China)
• 2017–2019 Toyota Highlander (GSU50/55) 295 hp (220 kW; 299 PS)
• 2017–2020 Toyota Sienna (GSL30/33/35) 296 hp (221 kW; 300 PS)
• 2017–2024 Toyota Camry (GSV70) 301 hp (224 kW; 305 PS)
• 2018–2023 Toyota Alphard (GGH30) 296 hp (221 kW; 300 PS)
• 2018–2022 Toyota Avalon (GSX50) 301 hp (224 kW; 305 PS)
• 2018–present Lexus IS 350 (XE30) 311 hp (232 kW; 315 PS)
• 2018–present Lexus ES 350 (XZ10) 302 hp (225 kW; 306 PS)
• 2018–2025 Lexus RC 350 311 hp (232 kW; 315 PS)
• 2019–2022 Toyota Highlander (GSU70/75) 295 hp (220 kW; 299 PS)
• 2020–2023 Lexus LM 350[19] (AH30) 296 hp (221 kW; 300 PS)

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So looking at this some 2GR-FKS like the one in the Tacoma puts out 278 HP, but the Lexus GS 350 gets 311 HP. I notice Torque isn't listed. Give or take that's 30 HP. What is the difference? Why not put the 311 version in all vehicles?

 

why is cuz thats how every manufacturer wit evry engine they make depending on application , like car , truck , or sports car . and what is usually somehwer in top end like heads valves cam and or sometimes pistons

 

Different ECU tuning and most likely changes in manifold or exhaust design for different applications. Same engine but much different applications. The 2gr's feel very different in the cars based platforms like the highlander or gs350. They rev quicker and feel much less truck like. They most likely tuned the 2gr in the tacoma for max durability. Knowing owners would be pushing these engines to their limit off-road, towing and adding a lot of weight to the platform, Toyota designed them to meet higher durability standards in testing. Perhaps limiting it to 278 hp was intentional for times when you need to keep the truck at 5,000 rpm for extended periods of time.

 

From a 30K ft view: Different intake manifolds and calibrations. The intake manifolds effectively tune where in the RPM band the motor produces peak torque. The calibration differences are calibrated for the intended use of the vehicle and specific fuels. The higher output motors are tuned to be "Premium Fuel" centric.

 

TW user Tech708CC put Camry intake on Tacoma. He got a decent power out of the swap and the tune

 

Well for one, the Lexus versions require 93 octane fuel. This implies they have higher compression and/or are tuned differently. The downside is that you pay a lot more for gas, but Lexus owners are happy to pay it.