sluggish feeling after installing K&N CAI

[Hellz]

so i just installed a series 77 K&N CAI system.

no issues during the install, except for craptastic instructions.

noticable throttle response yadda yadda yadda.

not really a issue, but noticed that it seems a little sluggish between 2nd and 3rd gear when shifting. maybe in a few other spots when i accelerate.

now, i didnt follow the directions completely as i didnt disconnect the neg battery terminal. so not sure if something needed to be reset and that is the reasoning for doing so, but will do it tonight just to rule that out.

anything else that it could be?

everythign else is stock. so no aftermarket exhaust or chip tuning.