as requested, laser jammers pic
the sprint booster is an electronic device that helps to eliminate the lag associated with modern cars like our Z that use throttle by wire control.
I installed this after trying to merge from a dead stop and my Z seemed to hesitate for about a second from me mashing the gas pedal to the car actually responding. that 1 second almost caused me to get in an accident and was not a very nice feeling. now when i mash the throttle pedal the Z responds like it should-instantly. as a side benefit to the sprint booster it has 3 modes that make the Z a little more dynamic (fun) if the led (button) is clear the throttle is back to stock, green is like sport mode, and red is like race mode and you will be spinning your tires alot
. i keep it in green for the most part as it eliminates the lag i mentioned earlier and saves some rubber on my tires. but red is very fun!!