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Dyno of open SMSP D Series 4-1 header with 2-1/4" collector versus a stock manifold, cat and exhaust. The engine is a stock D16Y7 running the DPFI manifold and ECU of a 1991 Civic D15. Blue Line : SMSP Header
Dyno of SMSP D Series 4-1 header with 2-1/4" collector versus a stock manifold. Both manifolds running the stock cat and exhaust. The engine is a stock D16Y7 running the DPFI manifold and ECU of a 1991 Civic D15. Blue Line : SMSP Header
Dyno of the SMSP B19 4-2-1 Multi Piece Header with 2-1/2" collector versus the RMF narrow 4-1 header with a 2-1/2" collector on a 84.5 x 89 B20VTEC with Jenvey ITBs. Black line:SMSP and Blue line:RMF
Dyno of the SMSP B Series 4-1 Staggered Collector Stainless Steel Header with 2-1/2" collector versus the RMF narrow 4-1 header with a 2-1/2" collector on a 84.5 x 89 B20VTEC with Jenvey ITBs. Black line:SMSP and Blue line:RMF
Dyno Testing of a custom SMSP H22 4-2-1 Multi Piece Stainless header with 3" SMSP exhaust versus a Mugen 4-2-1 stainless header and a T1R 2-1/2" exhaust. Engine has a stock 5th gen H22 long block, Jun cams, AEM stand alone and TWM ITBs. SMSP: Red Line had max power of 206.3 whp where the Mugen was 196.4 whp.
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