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2004 gmc envoy_sle
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319 Posts
Discussion Starter · #1 ·
any advice on whats the best performance chips for our trucks? something with good quality and great power!! thanks
 

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2006 chevy trailblazer_ls
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278 Posts
None. the PCM will readjust and bring it back to stock parameters

Get tuned at pcmforless
 

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8,781 Posts
:iagree:

The JET brand chips will become useless after a little while since the PCM will relearn its stock parameters..

I would suggest getting the PCM itself tuned by PCM4LESS or another company
 

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2003 chevy trailblazer_ls
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1,708 Posts
I have the PCMforless and am very happy. However I also ran the Jet chip, stage 1, for just over 3 years and the PCM never returned to the orignal setting. I changed because I wanted something better.
 

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2004 chevy trailblazer_lt_ext
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118 Posts
Does the PCM upgrade increase over all top end speed?
 

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2004 chevy trailblazer_lt_ext
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118 Posts
I have the PCMforless and am very happy. However I also ran the Jet chip, stage 1, for just over 3 years and the PCM never returned to the orignal setting. I changed because I wanted something better.
So I went to PCM for less and it has the PCM upgrades for the 2008-2009 I6 is there a certian area I should be looking in, I am sure this is an oversight on my part.
 

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2003 chevy trailblazer_ls
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1,708 Posts
Give Kelly a call and she will explain it to you. Most of the questions are on the website as what you want the PCM reprogram to do.
 
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