Mazdaspeed2oo35
600whp - 600wtq at 30 PSI
I am still trying to figure out how the HKS Hi Power Catback Exhaust is considered hi power. Or is that just some bs that everybody knows...
Bro, that's just the model name of it.. you are not going to gain s*** load of HP with just a muffler.. if you combine this muffler with a 3 inch exhaust and mods you'll sure will gain some good Horsepower