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LFX's are high compression motors (11.5:1) and they like 91 octane. They run fine on 87 but timing IS being pulled, you can watch the KR with any cheap scantool. I used to feel it most at part throttle acceleration. Makes more power with 91 than 87, no doubt.
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3.6L Twin Turbo V6 Garrett GT28 turbos -- Jacfab forged connecting rods -- Diamond forged pistons(10.5:1) -- Alky Control Methonal Injection -- CircleD 2E triple disc torque converter -- BMR suspension 10.75 @ 131mph |