canned or custom retunes are free. you can even buy the tune now for the sale price and wait 60 days to get the tune installed if your waiting on a pulley. i would get the tune as you already have the dual cai and you can delimit to 201mph and raise the rpm shift points and remap the torque management. all in all you will feel a big difference without the pulley.
NOW AS FOR THE inmotion guy. he doesnt know squat if he thinks theres a dynotune mode on these cars. run very fast away from him!! manual mode esp off and do 4th gear pulls to redline. no need for a 50k whatever! jerry is a great tuner and he has made my 32 run 11.9 afr at 170 mph . good enough for me!

research and dataloggs are the key to tuning. theres also renntech, kleeman, oetuning(jeremy) and buckhead imports (tony) speedriven (marcin) does some tuning but mostly for the v8 not the v6 (thats not to say he cant do it)

if you want a inmotion tune and pulley rob at needswings is the man to see. he will be 100% upfront . no need to doubt him.
dyno tunes after you get the e/c tune will cost you dyno time nothing more