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RPM shift Point ??

This is a discussion on RPM shift Point ?? within the Computer & Tuning forums, part of the LSx Technical Help Section category; Had my car tuned with HPTuners at a local shop and the tuner set my shift point at 6400 at ...

  1. #1
    Member firemedic0135's Avatar
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    RPM shift Point ??

    Had my car tuned with HPTuners at a local shop and the tuner set my shift point at 6400 at WOT and then drops as the trottle angle drops.
    Seems to loose a little power now going from 2-3rd now like it is getting to far away from the power band.1-2 is right on and throws a TCS light when it shifts.
    Car is mainly stock and if your wondering why I tuned it, its because I was throwing 420 codes and the egr was shot,plus free tunes from here on out when I make a new mod.(300 bucks in case your wondering that also)

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    Senior Member mrr23's Avatar
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    on a stock cam, 6400 is a bit high. 6200 is the max i would set it to.

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    Member firemedic0135's Avatar
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    Thanks ..I thought it sounded a bit strung out.
    I will get it pulled back down a bit later in the week.

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    Moderator Firebirdjones's Avatar
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    I agree with mrr23,,,I found mine ran best at the track when I adjusted the shift points to around 6,000-6,100 rpms,,,even at 6,100 I can feel the car slightly nose over right before it shifts, but on the 1-2 shift it still helps because the rpm drop on the 1-2 shift (4L60E) quite frankly sucks, and the motor struggles to get rpms back up. So I have the 1-2 shift slightly higher than the 2-3 shift. Mine is an 02 model with the very smallish truck cam, so it especially doesn't like too much rpms.

    If you have HPtuner, play with it at the track like I did, it's neat to find little things to widdle away at the ET.

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