Buy a 40 dollar cable and you can do more than that. Just watch a youtube tutorial on forscan and thats it. Most imoortant is do a back up before changing anything.
I think your build date is the reason.
And I think @roket and me are a part of this problem. We have those parts installed on our coupe and since then the parts were sold out.
I apologize to the new convertible owners.
If it was a Chinese car I would understand your comment, but this is an American car. They will never give you a lower HP number if they can find a reason to advertise a higher one. 😂😂😂😂