JDM AWD /// platform file
Toyota GR Yaris / GR Corolla build guide
G16E-GTS · 1.6 turbo I3. What the stock hardware reliably supports, where it breaks first, and the fastest safe path to more.
The Toyota GR Yaris / GR Corolla makes 300 hp stock at roughly 3,000 lb (10 lb/hp). Its stock internals are good for about 420 hp, the fuel system for around 360 hp, and the stock turbo(s) flow about 350 hp. Below is the limit sheet carbuildcheck analyzes against, plus the platform's documented weak points.
01 Factory card
Stock power300 hp
Curb weight3,000 lb · 10 lb/hp
LayoutAWD
InductionTurbocharged
02 What stock parts support
Engine internals~420 hp
Fuel system~360 hp
Induction ceiling~350 hp
Clutch (manual)~330 hp
Transmission (auto/DCT)~380 hp
Cooling (sustained)~360 hp
Community-documented crank-hp planning figures, conservative by design. How these are used in the score →
03 Where it breaks first
The stock turbo is done here. The big-turbo path wants fueling, clutch and a proven calibration in the same order as the parts.
The intercooler heat-soaks on repeated laps. Ducting or a bigger core buys back the power fade.
Young platform, small tuning sample size. Proven maps and conservative timing beat forum bravado.
04 The typical path
Stage 1 tune → intake → downpipe → intercooler → Stage 2 tune. Fueling before E85, driveline before sticky tires.
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