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Need some tuner input

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Old May 10, 2018 | 09:21 AM
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Default Need some tuner input

I Have a 05 LS2 that I just had headers installed and retuned on the same dyno.


It was in the high 80's and almost no humitity yesterday. You will see that I have a dip in the power band and the AFR jumped to almost 14. This is a street driven cruiser. Previous tune was spot on and drove great never knocked.


I think it needs to have the dip tuned out and leaned out down low as it was when I took it in. Am I wrong in my thinking, or what
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Old May 10, 2018 | 11:22 PM
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Originally Posted by Texan79423
I Have a 05 LS2 that I just had headers installed and retuned on the same dyno.


It was in the high 80's and almost no humitity yesterday. You will see that I have a dip in the power band and the AFR jumped to almost 14. This is a street driven cruiser. Previous tune was spot on and drove great never knocked.


I think it needs to have the dip tuned out and leaned out down low as it was when I took it in. Am I wrong in my thinking, or what
Between the dip in torque at at 2.8K, and the torque signing off early at 4k as it starts to drop down, something does not look right with the tune. The HP dropping off at 5.6K is normal for most tunes, but can be corrected as well.

See if you can get a copy of the tune file and post is so we can take a look at it.
Really, before the tune, your tuner should have saved both the OEM tune, and then the final tune,so get copies of both them them for safe storage.

Last edited by Dano523; May 10, 2018 at 11:26 PM.
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