Ok, so I'm driving my car out of work and I get on it but when I shift to second and get to about 4500rpms the engine hesitates for a split second and does it again at about 5200 (this only happens in second). So I slow down make sure everything is good and try another pull, this time no hesitation but power definitely feels limited like the car is retarding timing or pulling boost. My question is where or what can I buy to data log? I don't want to flash I just want to see whats going on. I looked at the tactrix cables but I don't really want to drop $300 right now if I don't have to. Is there any other cheaper alternatives? Also, my car is bone stock 2014 GSR.