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Updated TPS for Maxx Alpha-N

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  • Updated TPS for Maxx Alpha-N

    Has anyone updated their MAXX loom for the newer TPS with rectangular connector? My round connector TPS in intermittently failing and showing 55% throttle, even at 0 throttle. The round connector TPS is either NLA or very expensive, if it would even ship...
    "It is needless to say that self-propelling vehicles, like other machines, will never do as much for one who does not understand them as for one who does."

  • #2
    When did the rectangular connector come out and is anything different?

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    • #3
      When I sent my Maxx unit in for closed loop upgrade last year I converted to the newer TPS at the same time. I believe the newer TPS is used on the S54 motor and it is far easier/cheaper to get. Martin made a small harness for me with rectangular plug end. From memory, this made it a plug and play setup in the engine compartment with no cutting/splicing. I still have the round style TPS that was working when removed if you are interested in it.
      Charley Terhune
      89 Zinno M3- stock 89k miles
      89 Zinno M3- 2.5 etc. etc.
      88 Alpine M3- 85k miles

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      • #4
        Originally posted by ///Mflossin View Post
        When did the rectangular connector come out and is anything different?
        John, on their website, there is a link for installation instructions for old Bosch style TPS, and a different link for M50 TPS. On page 6 here you can see the new TPS setup with a spacer
        http://maxx-automotive.de/ftp/alpha-...4_140600en.pdf

        I'm curious if there is a performance benefit (i.e. response/accuracy) to the newer M50 TPS. If so, it might be worth upgrading. If not, I'll shell out the $400 for Bosch S38 TPS :( https://www.turnermotorsport.com/p-2...tch-e34-m5-36/
        "It is needless to say that self-propelling vehicles, like other machines, will never do as much for one who does not understand them as for one who does."

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        • #5
          Originally posted by ct_m3 View Post
          When I sent my Maxx unit in for closed loop upgrade last year I converted to the newer TPS at the same time. I believe the newer TPS is used on the S54 motor and it is far easier/cheaper to get. Martin made a small harness for me with rectangular plug end. From memory, this made it a plug and play setup in the engine compartment with no cutting/splicing. I still have the round style TPS that was working when removed if you are interested in it.
          PM sent!
          "It is needless to say that self-propelling vehicles, like other machines, will never do as much for one who does not understand them as for one who does."

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