Originally Posted by oldhp
Has anybody run a 190° WITHOUT a TUNER????
I put a 180 in my 09 truck as soon as I got it. Well as soon as I found one, it took a while for that. But I had no tuner and I didn't install my tuner the first year so I ran it for a while without it. I never had any problems or codes pop up and it's been to the dealer with transmission warranty work without voiding anything.