raspy note
 

hey guys,
i just recently got my exhaust work done.
perrin non-res catback
paired with a t1r catless front pipe.

i noticed a bit of raspyness after adding the front pipe. any way i can resolve this?

Catted front pipe

You could check for a exhaust leak. In most cases IMO are exhaust parts not lined up correctly allowing bits of exhaust to blow by causing this sound.
I do suggest posting a video so the community can further assist you.

will do that tomorrow as it is a little late and dark out. thank you!

t1r doesnt have any catted ones :/ will carbon build up help mellow it down a little? its not to the point where its unbearable but its there and i know its there and im kinda OCD

You could add a resonator in there somewhere.

I put a header on my last 4-banger and it was too raspy for my liking. I added in a resonator on the midpipe and it helped out a bit (also killed some drone and made it a tad bit quieter)

i thought about that. even got a quote from perrin for a resonated mid pipe. but as of right now, i really like the sound level. i think its perfect. only issue is the rasp.

Get a small resonator or add the cat to the front pipe.

Resonators don't change the sound level that much (minimal) they mainly help eliminate drone and raspyness. Granted, it depends on which type of resonator as there are some different types to choose from.

I have two resonators on mine right now (catless resonated front pipe and resonated midpipe - both simple canister resonators).

You need either a catted front pipe, or a resonated mid pipe. An exhaust leak won't cause rasp, and carbon build up won't stop it.

You could also try header wrap on the front pipe.

What would the header wrap do?

It helps to reduce and soak up vibrations that cause the raspiness. It helped eliminate rasp I got from my header instalation.

Rasp isn't from vibration.... and if the header wrap stops the pipes from vibrating they're WAY too flimsy.

The only way header wrap would stop a noise would be if the header or front pipe was rubbing on a heat shield or metal part of the car.