How do I make my shitbox start backfiring?
>>16318264
Install a carb and do keybangers
Put some water in Your gas tank
>>16318264
Why?
Cut exhaust off before the cat (just cutting off the muffler may work too)
Backfires? Make the fuel input valve not completely close.
Afterfires? Richer fuel mixture.
>>16318395
It's probably a 100% serviceable and usable car that was given as a gift to OP by his father or something, and he wants to destroy it so his father will give him something newer. That's usually how these threads go.