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West Central IA | Torque response is all in the pump. A reputable pump shop will put in the necessary parts to make it respond like a rabbit. I have a 4430 that has had this done. Starts great even when cold and has tons of power. I also have a 4630 that was always a dog and would wait for the engine to loose a couple hundred rpm before it would respond. Tightened down the aneroid and now is much better responding. | |
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4430 throttle response
