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HP tuner advice?

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Old Oct 29, 2009 | 12:48 PM
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Default HP tuner advice?

I have an LS4 in my Fiero and have had HP tuner used to remove the Dif score tranny issue I had.
My question is with out a dyno to tune the car what would the most common changes be to the ECM to help performance?
The tranny is WAYYYY to soft, I want MUCH faster shifts, speed gov, rev-limmiter and so on?

Thanks.
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Old Oct 29, 2009 | 03:37 PM
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you got the right idea. For an inexperienced user that would be the way to go. Other than that just tune the maf and watch out for KR. There is a lot to be gained by tweaking the tranny and TM.

The a/f ratio and timing aren't too bad on the gxp's. Way more aggressive than the LS1 tune at least.
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