Completely stock 370s put down about 280 whp. Mine was 297 whp with a Stillen G3 intake, Berk HFC & Berk CBE on a Dynojet. After Uprev and custom tune I was 324 whp on the same Dynojet. My numbers are very typical with those mods and a tune. The tune made by far the biggest improvement in performance. The exhaust made the car sound great, but the tune improved drivability, throttle response, and performance.
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Berk HFC & CBE, Stillen G3, UpRev & tune by PSI, GTMat, 3M, Swift, StopTech, H&R 20/25, GT-R,
324 whp & 262 torque
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