Hey guys,
So I been fighting with this issue for about a year now.

My exhaust has a constant spitting/Rasp sound at Wide open throttle and above 4K.
(I have checked for exhaust leaks, I used Exhaust Gasket sealer on all connections, I have plugged the exhaust and looked for leaks I cant seem to find any)

Then at random times the Spitting/Raspy sound goes away the exhaust sounds very mellow and throaty and very well tuned and I can feel a difference in power above 4k.

The exhaust setup is 3" from collector to tip and has resonator and straight through 3 inch muffler.

I haven't been able to figure it out and wondered what you guys think, throw me what ever thoughts you have as it is driving me nuts.

 

What is your catalyser/resonator/muffler setup and diameter?

Usually when you remove the catalyser there is more raspiness, same thing for resonators. If you want to avoid raspiness add a second resonator, not a bigger muffler. On my old 92 b18a teg I have ran 2.5'' piping no cat, a vibrant resonator (great product), a 6'' long muffler shop resonator and magnaflow 2.5'' straight through oval muffler. It was so quiet it was barely any louder than stock, almost boring.

 

Kinda sounds like the baffles inside your muffler are broke...

 

Its 3" and magnaflow res and muffler all under year old. Its not the honda rasp im talking about it sounds likee a spizzz/rasp sound. Only comes in at wide open over 4k when its gone the car sounds very different and has noticable power gain.