congrats bro may u enjoy the alternative fuel to it's fullest - as for the CNG post installation experience, i had my previous 2005 IDSI converted to CNG and it worked flawlessly, yes there is an obvious difference in pickup expecially when your A/C is on but it should not be too much. Anyway assuming that all is well, i would say that you will get used to it
also bro just make sure that your air filter and plugs are nice and clean and also one tip, if you are getting good milage like 130 to 150 within city, never ever mess with the kit's tuning unless absolutely necessary. I have seen that if the kit is set to the right configuration and one should not take panga with it