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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 Vortec 5.3L V8 Engine and Drivetrain > Engine Tunes/Mods

Engine Tunes/Mods Performance Engine Tuning/Engine Modifications

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  #1  
Old 06-14-2017, 08:56 PM
BarnesGN BarnesGN is offline
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2008 Pontiac G8 GT
Graphite Metallic 6.0L LS2 V8 2WD
Join Date: Jan 2017
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Posts: 6
ECM tuning

If I understand correctly to tune a gmt360 you need to remove the ECM and send it off? Any laptop compatible systems just plug in i.e. HP tuners.
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Old 06-14-2017, 09:22 PM
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branndonw branndonw is offline
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2008 Chevy TrailBlazer SS (3SS)
Summit White 6.0L LS2 V8 2WD
Join Date: Aug 2006
Location: Centerton, AR
Posts: 37
HPT and EFIlive will work.
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Old 06-14-2017, 10:15 PM
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AWD V8 AWD V8 is offline
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2003 GMC Envoy SLT
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I just got my HPTuners on Monday. I'm a first time user. I have an 6.0 LS swapped Cherokee and of course my 5.3 Envoy. So far I've just removed the VATS on my Cherokee and tweaked a couple of other things.

It is pretty straightforward for the simple things that that. It isn't like a handheld tuner where you just select the "More HP" setting and you're done. You need to understand some basics on tuning.

If you are serious about tuning, sign up at the HPT forum and use a demo editor you can download at the HPT site. Then you can open and view tuning files that members post on the forum. This will give you a bit of a feel for what you can adjust and how to navigate the program.

My HPT installed with no issues on my Window 10 laptop and I was able to view, download, edit and upload to the PCM in my Cherokee in a few minutes. It was surprisingly easy.
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