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A 1989-1993 Cummins has 160 HP stock, The 94 and 95 automatic also had 160 HP, The manual in 94 and 95 had 175 HP, a 95 High output was 180 HP. In 96-98 the auto was 175 HP and the manual was 215 HP. 1998 was the last year of the 12 Valve Cummins. An intake and a 4" exaust should add 20-30 HP and a 2-3 MPG increase on your truck.

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Q: What is the hp and torque for a 12 valve cummins with an aftermarket intake and exhaust?
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