Will a high flow cat lower the volume of my 3inch exhaust significantly? I'm looking to quiet this baby down

 

Maybe a lil. Which exhaust do you have?

 

buschur racing quiet exhaust

 

yes it will , then if its still loud l, sell the bueshur, leave the hiflow cat on and put stock exhaust on, thats what I did.

 

i do like the sound with the stock exhaust honestly, but unfortunately my stock muffler has a bad rattle inside :-( also how much power is really lost on a somewhat stock car by going back to the stock exhaust with a test pipe

 

resonated testpipe will be more effective in lowering the sound.

 

Same problem here. My stock muffler has a bad rattle. I was wanting to do the same as you, High flow cat, with a quite exhasut. Was looking at magnaflow.

The HFC with resonator sounds like a good idea.

 

The HFC will lower the exhaust note, but it's hard to tell by how much. The HFC should do more then the resonator. A 3.0" resonator won't make that much of a difference, but it does help with the drone. Lower exhaust flow the resonator will be bypassed since the resonator material is on the outer diameter.... Exhaust will always have to push through the HFC material.

Thanks!

Michale

 

Are you considering it in comparison to the stock CC? Or do you have a test pipe? I can't imagine it'd be quieter than the stock PIG CC. If nothing else, the 20 pounds of heat shields absorb kinetic energy = noise. Ok, maybe I exaggerate, but it's heavy and not noisy. I'm assuming your question is in contrast to a test pipe.

 

If you want to quiet it down without loosing performance look into the ultimate racing mini muffler test pipe. It works great!!

 

 

i'm talking in comparison to a test pipe

 

Put a mini-muffler in place of the test pipe.

 

From what I've been reading the Buschur Quiet isn't that quiet and that their Cross Flow is a much quieter systems.

Also remember that not all HFC are created equal. HFC is one of those, "you get what you pay for" parts.

On that note, a resonated tp on my old WRXs only changed pitch and resonance (imagine that). In other words, instead of booming at 3-4k rpm, it hummed loudly from 3.5-4.2k.

I question if a mini muffler tp would gain much over stock.

 

I'd like to see what your figure out. I'm looking for a nice single and would interested in adding a test pipe if helps with sound but doesnt hurt power.