my car just got its greddy turbokit fully installed today, and when i picked it up my car was having problems..and this is all happening while driving normal!

so my car was done today..they said it was good to go....

problem 1)i drove it like normal, and it pops all the time when i let off the gas pedal, the only time it doesn't pop is when it goes into boost..

problem 2)driving the speed limit and most of the time on the way back from the shop on the freeway,my car is always going into boost when i dont want it too,the exhaust starts sputtering then forces me into boost

problem 3)if i drive faster than 20mph i believe,and i put my car into neutral,my car dies on me,then i have to turn my car back on, this happens to me on the highway also,and my car just coasts until i turn it back on..

any ideas? any one..?

 

Obviously the car was not "..good to go..". Where was the work done? Take it back.

 

sounds like it needs to be tuned properly. was the shop a reputable shop or just some shade tree mechanic that is limited to bolt on knowledge?