Expy lightning swap help
Hi I'm trying to do the Lightning blower swap on my 98 expy. I know there are lots of posts about this but they are all old I thought starting a new post would be easier.
I have a question about the pcm side of things? It's a factory 5.4 4x4 e4od box I believe. Now will my pcm run this setup with a tune or will I need a pcm swap to a newer type. Being a 98 pcm will a sct x4 tuner even connect and tune? also what are the differences between 98 and 99 pcm's just for knowledge. Thanks