Question:
I bought my old style Stage One kit on-line in 2011 for my 09 SS and it's still in the box. ( I get lazy). I plan on installing it very soon along with a ZZP intercooler and in/out pipes. Should I just solder them in or is there an option to get the connectors to bench solder them onto the kit's pigtails to turn them into the plug n play style to make the under car install process easier? I hope the two mile trip down the road to the dealer doesn't cause any issues.

 

No ****. Just take it to the dealer. You are not gonna save a lot by installing sensors yourself. But I would hurry, and do it in the next year or two, because the dealership might not have that programming option by 2027

 

Since you haven't cut the original harness yet, You can buy the plug-n-play harness separately and use them in place of the splice-in ones with your old kit. Not sure how much they are now but around $100 seems to be what I remember.
There's a pretty good write up on the CobaltSS forum. Here's the link:
https://www.cobaltss.net/forums/how-...t-gms1-267728/