Another tune after upgrades?

Discussion in 'Performance Mods' started by Ponchopwr70, Jul 16, 2016.

  1. Ponchopwr70

    Ponchopwr70 Full Access Member

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    Hey guys, have a question. Is another tune from Torrie needed after I added a jtsvp throttle body and underdrive pulley? I bought the truck over a year ago with a cold air intake, headers, 3" mids, and a magnaflow muffler welded in place of stock and a sct tuner with a 93 tune from Torrie. I have since added a magnaflow cat back ( I even cut the 2.5 necked down connection and welded 3" in place,) a jtsvp underdrive pulley, jtsvp throttle body and a jmb catch can. My truck runs really good but if I can gain more out of it I will consider. Just don't want to spend $200 and have it run the same.
     
  2. rottenronnie

    rottenronnie Well-Known Member Supporting Member

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    I would say no, a re-tune is not needed as the Throttle Body and U/D Pulley do not force you to make changes to Air-Fuel nor Ignition Timing.

    Now if you added/deleted cats, changed the compression ratio, cylinder heads, camshaft and/or added larger injectors then: Yes.
     
    Last edited: Jul 16, 2016
  3. Ponchopwr70

    Ponchopwr70 Full Access Member

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    Ok sounds good, thank you!