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What Can I do as far as updating the computer to give better gas mileage?
 

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They won't bother to check the ECM/PCM if you come in with a bad taillight, but, I can assure you if you go to a dealer with a blown engine they can verify whether or not the ECM/PCM was tampered with.
 

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They won't bother to check the ECM/PCM if you come in with a bad taillight, but, I can assure you if you go to a dealer with a blown engine they can verify whether or not the ECM/PCM was tampered with.
lol...VERY TRUE !

BUT ABOUT MPG.....
I have been mildly tuned and in the cruise mode
at 55 mph I get around 45.2 mpg almost always.
( 2.4l auto )
 

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They won't bother to check the ECM/PCM if you come in with a bad taillight, but, I can assure you if you go to a dealer with a blown engine they can verify whether or not the ECM/PCM was tampered with.
What if you have a CEL for whatever reason?
 

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Im pretty sure dealerships will go to great lengths to find weather you've tamperd with you cars computer or not. We should just be lucky that we dont have little black boxes like the Nissan GTR.
 

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Really depends on the technician...and what you brought your car in for. If you have a CEL for the gas cap they aren't going to spend time looking for tuning. Probably will take the time when diagnosing engine performance problems of any kind -- it's part of their checks...to look for any add-ons, aftermarket parts, etc. that might affect the problem.
 

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Meh I guess I rather be safe than sorry personally. I don't wanna pay to play lmao

Im pretty sure dealerships will go to great lengths to find weather you've tamperd with you cars computer or not. We should just be lucky that we dont have little black boxes like the Nissan GTR.
Actually we do have them. That's what the metal box is under the panel under the e-brake. on't hold me to that location though, I don't know if that's 100% the location, that's just what I've been told.
 

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No you are right on the location. Under where the E-brake handle rests in lowered position is a panel. Pry it off and you have the black box (silver more like it) under it. Whether or not it records tampering Im not sure. I DO know it records the last few moments before a crash, and controls the airbag module deployments. If anyone would care to check behind me, it is called the Service and Diagnostic Module on my '08 LS. I'll double check and edit this if I am wrong, though.
 

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Is HP Tuners compatible with the 06 LS that he has ?
 

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Should be I know HP tuners isn't compatible with 08's
 
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