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Reply to "Engine swap- recommended Suby Engine Builder"

I’m probably the only person on this site to have owned a Spyder with a stock EJ25 engine and stock ECU and also a Spyder with Outfront “200”hp EJ25 with built heads and Stinger ECU. My new car does have a LSD and a better shifter. But I can tell you from the seat of the pants. There is absolutely no comparison in the performance of these 2 vehicles. My new car would smoke my old car. I was told by the builder of my first engine to just put 87 octane in the car since with a stock ECU there would be no difference in performance between regular and high test. Of course I tried premium and could never tell the difference. Obviously there’s no difference in displacement between these two engines. Difference has to be compression and ECU tuning. I know the argument for going all stock. But I’ve been there. Done that. My new car screams. I’m just not interested in stock. Also not interested in forced induction.

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