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FEATURED+50 HP
2023 Toyota GR Corolla - Rally-Inspired 350WHP Daily
2023 Toyota GR Corolla (Core)
About This Build
The GR Corolla already punches above its weight from the factory — 300HP AWD hot hatch for under $40k. This build focuses on reliable daily power. The intercooler and tune on E30 blend unlock 50 extra HP without touching internals. The exhaust note from the 3-cylinder is unlike anything else on the road. Added some handling bits because the stock rear end can get loose. This thing embarrasses cars twice its price at autocross.
Performance Comparison
Factory
HP300
TQ273
0-604.99s
Modified
HP350
TQ340
0-604.4s
+50
HP Gain
+67
TQ Gain
-0.6s
0-60
Modifications
GrimmSpeed Intercooler Upgrade ($850), HKS Intake Kit ($380), Invidia N1 Catback Exhaust ($1100), EcuTek Stage 1+ Tune E30 Blend ($800), GrimmSpeed 3-Port EBCS Boost Controller ($120), Turbosmart Recirculating BOV ($250), NGK One-Step Colder Spark Plugs ($60), Mishimoto Oil Catch Can ($180), Perrin Shift Stop + Bushing ($80), Whiteline Rear Sway Bar ($350), Firestone Indy 500 255/35R18 Set ($630)
Build Stats
Total Cost$4,800
Published2/15/2026