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a4 header

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    #1

    a4 header

    Does the a4 header fit the a1 downpipe or would I need to get both a4 header and downpipe. This gives you a plus 5 in hp?
    Tags: None
    #2
    Originally posted by ASTCB7 View Post
    Does the a4 header fit the a1 downpipe or would I need to get both a4 header and downpipe. This gives you a plus 5 in hp?
    You have to get the complete A4 header/downpipe. The A1 is 4-1 and the A4 is 4-2-1 (four pipes then two the one).

    It is debatable on the actual HP gain, but it is said to give you some more breathing room for your exhaust. (AKA better HP)
    "There is nothing wrong with you that an expensive operation cannot prolong."

    Comment

      #3
      5hp on a perfectly healthy (like new-healthy) F22A1.
      How do I know? Because the F22A4 and F22A1 are absolutely identical in every way, including the ECU, save for the exhaust manifold. The difference between the two engines is 5hp.






      Comment

        #4
        Thanks deev! But as he said above you I need both header and dowbpipe? Just as conformation?

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          #5
          Yes. Everything he said is correct.






          Comment

            #6
            Should I get all New gaskets as well?

            Comment

              #7
              Always.






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