At 2,400 rpm, the new cam made an additional 3 hp and 5 lb-ft of torque over our previous run before dropping output by about 6 hp and 8 lb-ft of torque throughout the midrange. At 6,400 rpm, the 248/232 combination made as much as 9 additional hp and 12 lb-ft of torque. But purchasing a set of adjustable cam gears to properly degree the camshafts could have recovered some low/mid power loss, we speculate. As it sits with stock cam gears, this camshaft combination would be an excellent upgrade for turbocharged KA applications that require the engine to rev high to take advantage of top-end power. CONCLUSION HP Level +HP TQ Level +TQ BASELINE 121.6 131.4 AEM INTAKE 125.3 3.7 132.9 1.5 DC SPORTS 4-2-1 CERAMIC HEADER 132.3 7.0 142.5 9.6 '91 240SX (S13) EXHAUST CAMSHAFT 135.6 3.3 136.7 -5.8 FINAL 135.6 14.0 136.7 5.3 Conclusion What began as a baseline dyno run of 121.6 hp and 131.4 lb-ft of torque was revamped with a gain of 14.0 whp and 5.3 lb-ft of torque. Although we lost midrange power and torque with our cam-shaft, we suspect some additional tuning could find gains all around. Still, representing a 10-percent jump in horsepower for under a grand (more than 15 percent factoring in the HKS exhaust), our final horsepower gains were solid for any naturally aspirated inline-four, especially the stump-pulling KA24DE. BANKROLL AEM SHORT RAM INDUCTION INTAKE $240.06 DC SPORTS 4-2-1 CERAMIC HEADER $434.98 '91 240SX (S13) EXHAUST CAMSHAFT $50.00 MSRP TOTAL $725.04 HOTBOX AEM P.O. Box 1312 Hawthorne CA 90250 800-992-3000 www.aempower.com DC Sports 768 S. Turnbull Canyon Rd City of Industry CA 91746 800-237-7560 www.dcsports.com G-Dimension 817 Lawson Street City Of Industry CA 91748 626-839-3777 www.g-dimension.com SP Engineering 424 Turnbull Canyon Rd. City Of Industry CA 91745 626-333-5398 www.sp-power.com « | 1 | 2 | 3 | View Full Article By Scott Tsuneishi Enjoyed this Post? Subscribe to our RSS Feed, or use your favorite social media to recommend us to friends and colleagues!