Sluggish car

I dunno for some reason my exhaust doesn’t sound right, it’s as if something is restricting. I have the Blitz Nur Spec and I know how it should sound cause it was like this when I first had it. On top of that, my gas mileage has dropped. The car feels sluggish and it doesn’t accelerate like it should…I know these symptoms are reallya vague, but maybe someone has experienced this and solved it?

I dunno if this is helpful but I left the car outside for like a month without driving it cause I was waiting for my replacement radiator. I’m not sure if this has anything to do with it. At least my exhauast doesn’t pop anywhere when I deccerlate to a stop.

I dunno check your air, fuel, and spark to begin, check distributor, check mafs, could be anything, check ecu fault codes

if your exhaust note has changed, I would say a faulty exhaust component such as a collapsed resonator or cat is the likely culperate.

If you would like I can check it our for you at my shop.

the loss of power is also a clear indication

Hey Matt, you think I can do that?
I jus need someone who knows the engine to tell me wat the problem is