well that is what you call backfirewich is caused by alot of things hole in exaust to to much fuel going through but more than likely it sounds like a timing prob!!! so check those sources first.....
you have a leak in the exhaust system lets in air
loose exhaust pipe or muffler is most common
Accelerator - The Future Sound of London album - was created in 1992.
It's a PCI sound Card
exhaust tip or glasspack it
your car being broke get it checked out
By adding a dual exhaust and/or exhaust headers either short or long tubes for sound and performance
While listening to Impreza exhaust sounds is not common, there are sites that have the sound. Check out YouTube for videos with the sound to listen to.
Put in a Borla cat-back exhaust, you will be greatly satisfied.
Attach a bigger sports exhaust, simpler enough
your transmition is either about to break or broke.
Exhaust leak at Exhaust manifold to head gasket or oring at exhaust manifold pipe.