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4g91 1.Install management(piggyback) such as E-manage(Greddy) or Dastek Unichip 2.Adjustabal campulley+high cam 3.Port & polish head - porting 4.Bore to 81mm piston...install mivec piston for high compression setup+mivec injector 240cc 5.Bolt on turbo....sure you willl gain more horsepower until 200 bhp Azrin 019-2527785

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15y ago
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Q: How do you increase horsepower of Mitsubishi 4G91 engine?
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