2003 Mustang Cobra With A Boost - Unstable Compounds - Tech
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Blower-Only Vs. Turbo-Only (HP And TQ)If you're wondering why a turbo-only system would outperform a compound system, you need only look at the power differences between turbos and the Eaton supercharger. During the testing of our compound system, we couldn't help but compare the turbos versus the blower. With both systems run at 11 psi, the blower motor produced 397 rwhp, where the turbo motor produced 599 rwhp. At the same boost (air/fuel and timing), the turbo combination offered an additional 200 hp and 150 lb-ft.It's this differential between the turbo and blower combinations that all but determined the outcome of the test between the compound and turbo-only combinations. Where the crossover between the turbo and blower combinations was 3,300 rpm, the compound combination increased this to 3,700 rpm. Had we decreased the speed of the blower and increased the boost supplied by the turbos, this crossover point would have shifted even higher as the compound system became more and more efficient. Of course, this would also diminish the torque production down low. View Related Article
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