Installed h-pipe, now it won't shift right? AOD

I installed my h-pipe yesterday, it's from pacesetter, and has no cats.

Everything is installed fine, except the smog pump hose.

I drove my car around last night, and everything was perfect, I was driving it today, and it was perfect, I turned it off, and when I got back in I was driving and I noticed that it started shifting very early, and it wouldn't upshift.

If I put it in 1, it will rap out fine, but as soon as I put it in D, the highest it will rev from a stop is 2.3rpms, and then it shifts into second, and soon after (30mph) it shifts into 3rd.

What could be going wrong, could my smog pump hose be causing this, and if so, why wouldn't it do it starting from yesterday?

I just went out and disconnected my battery, to see if that would reset my computer to see if it was a computer related issue, i'm not sure if that would work (worked for my Jeeps) and it changed nothing, except frustration of me having to re-set all my radio stations.

Alright, thank you. I'll check that.

Another thing I noticed today was (first time I had it in OD) is that it wouldn't hold 4th gear.

Anyone else have any suggestions?

thanks guys. I am driving it still though, tomorrow is my day off work, and I'll check it out a bit. It just all of a sudden happened to me a couple days after I installed the h-pipe, so that's kinda weird to me.