I bought used, an '09 Cobalt SS (Turbo). What visual inspection can I do to tell if it's had a Stage 2 upgrade. I wonder if it has the Stage 2 Hardware, but not the software.

 

stage 2 doesn't exist for the lnf. there is a gm stg1 though

 

This
How many pounds of boost do you see max

 

And take a picture of your intake mani/engine bay, if its stage 1 the MAP sensors are different

 

What this dude said. If you have Stage1, your TMAP and MAP sensors will look like the one in this pic.

 

 

The guys brand new, prolly seem stage two as an option on the lsj and doesn't know any better. Let's educate him like most have done and not make fun of him. The forum needs more people and its not going to happen if we run them out a day. However op, look around and do some searching, you will learn a lot more with an hour of looking then waiting for replies in a thread. Congrats on the new car, hope you enjoy.

 

Preach! There aren't enough people on this site giving "good" information anymore. Just poking fun and talking ****. Like stated above, there isn't a stage two for the LNF. There is the GM Stage 1 (GMS1) which is just a tune with upgraded MAP sensors on the intake in lower charge pipe. The pic in the thread is the stage 1 sensors. Everything is just aftermarket bolt ons.

 

Thanks everybody for the info and thanks SSlobalt for the pic. I'll check it out tomorrow AM after I get home from my overnight shift.