All Pro Circuit T-4 Owners...

[400exNH]

love my pipe. Here is my setup.

K&N filter with 3 1/2" holes in lid. 155M with 42pilot.

I'm thinking I'm running to lean. If I go up a size in the MJ to a 160 will it quiet the pipe down some?

If I get a smaller endcap will that quiet the pipe down some? Will I lose power?

TIA

I run a 165 main with the needle raised one notch and it runs
a tad rich. I have a 4"x8" hole in my lid.
Size of main shouldn't affect sound, I run mine with the largest end cap and the spark arrester. I have found out that this arrester is actually the quiet core insert. I've run with and without
and it didn't to seem to rob that much powewith.
John

[brian400ex]

I run a 158 main with needle moved up one notch. Might change to a 160 main in winter. Anybody else have there paint on the T4 decal come off? Mine did!

[400exNH]

I think I'll move to a 160.

Hey does anyone have the smallest size endcap? Did it reduce noise or power?

[bpimpdaddy21]

I am running a 158 main, 40 pilot, with K&N, and ground out the welds on my header, and the thing is running perfect, i love my T-4!