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What is the difference between throttle response and HP with changing stock tb to 75 mm tb bbk?
Not to much gain in hp or throttle response you will get a gain tho I got I have a lot more bolt ons then a TB and only saw total hp gain on 30 over stock i just dynoed at 207 hp 255 tq but I had the 70 mm TB 24 pound injectors mac headers catted h pipes 40 series mufflers KnN filter cobra intake manifold. I drove a stock 5.0 same year and type as mine and it felt a lot slower on response and in power but nothing dramatic . Its going to be more then one part If you want to start seeing some real differences IMO
 
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