WAIT WAIT WAIT....theres more!

Okay, maybe I am just retarded, but I totally forgot about something that’s actually a big deal. Under light acceleration, many times there is an RPM surge. Normally it'll jump from say 2000 to 3000 rpm. I haven’t paid enough attention to it to see if it’s happening during the 2nd to 3rd gear shift. I'll update later today after I drive a bit and let you know when that surge happens.

Could a faulty upshift valve (or whatever it’s called) be the cause of this?