Can you tell if I'm tuned?

I just picked up a newer suburban (2010 in my sig) and it is an absolute beast. It runs pretty dang good and makes me wonder if it wasn't tuned. There isn't any noticeable throttle lag or anything with the bigger tires and all it has is an intake as far as I can tell. How can I tell if it is tuned? If someone plugged into it with EFI or HP tuners could they tell? IF it was tuned EFI can someone with HP look at the files to see or vice versa? I would just like to know for my own good. Actually, if it isn't tuned I'll probably have it done anyway.....

most stock speed limiters are set at 98 to 101mph.

LOL!!! I might have to try that but not sure if I want to!

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Originally Posted by Haulinbass07

LOL!!! I might have to try that but not sure if I want to!

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You know you do!!!!

Yeah I do, but I'd have to get out and do it late tonight. There is WAAAY too much traffic around here......Plus my wife will be asleep and won't know what I'm doing to her new ride........

Lol

When i put an intake on my buddies 2010 sierra it threw his CEL with the code pertaining to the MAF so maybe it has a tune if you dont have a CEL. once i put back on his old intake it went away and yes i checked to make sure there were not any leaks. Just my .02. I am not sure if that was just a "fluke" thing that happened to his or if it happens to all the new ones.

Well with the larger tires the speedo is right on when I checked with the GPS. Unless it just has a tire recap module somewhere I haven't found yet I'm betting now its been tuned. I just hope it wasn't a box tuner and it was done right with EFI Live or HP. That is my next quest, to see if it can be modified tune wise.

everything in life can be modified

You could pull the cal ID# with scanner and check to see if its valid on calid.gm.com