the other day i drove on the highway a big 18 wheeler drop someshit onto the highway
that thing went under my car
and hit my cat

a day lata i got into a race with a stang and then a huge backfire comes out n my car felt alot stronger
it was also louder but my car felt ALOT stronger
1 day pass and i was driving normal
and then the car back fires and then started to shut down
everytime i would try to start it it would fall
if u wan to drive it u would have to give it gas to a constant 1300 rpm
if u let go it would fall flat
the engine shakes a alot before it falls
also a piece of a mud shiled flew of
didnt seem to b any major probz where the shield flew of
a mechanic told me it would have to b either the cat or the spark plug
u can smell a tremendous amount of gas o yea the cat has a whole about an inch big

 

sorrie to forget to add THANKS for all the help i am REALLY down that my car is messed up wish it be back to normal and nothing major is wrong. ALSO i have a full exausht dp highflow cat, other mods but does not have anything to do with this. THANKZ GUYZ!!