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The Fiero V6 2.8L engine produced a peak-corrected horsepower of 110 at 4500 rpm, significantly lower than the advertised 125hp. per dyno-testing of a stock 2m6.

The Fiero 4-cyl 2.5L engine produced a peak-corrected horsepower of 85 at 4500 rpm, significantly lower than the advertised 92hp. per dyno-testing of a stock 2m4.

Addition of turbo/superchargers has increased effective horsepower up to 30% without compromising engine integrity.

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