This might be a dumb question but I'm very new to owning a 2009 subaru Impreza WRX. The car came with perrin headers and perrin intake. It used to have the exhaust and a tune as well but the dealership took them off in order to sell it to me. I am wondering if my car is going to run into issues having the aftermarket headers and intake but no tune to support them or exhaust. Please let me know.

it will run great as is, better with a tune.

 

the go fast parts will add power, but thier full potential cannot be realized without a proper tune.

but still it will run fine

You should really have a tune with intake and exhaust modifications.

The headers won't bother much, as long as the down pipe is stock. But those newer turbo cars really should. Have a tune with an intake installed.