Oramac Sydrome

[joshr08]

not that i see 7k very often on the tach      Never see below it either huh?

[The Buddha]

This is near about what the yosh oval cans look like on the inside.
It does not have that hard edged noise. At all. The baffle is the key.
Cool.
Buddha.

[oramac]

Oramac - core the exhaust cans. I can do it for ~50 bucks.
The scroll is removed, the pea shooter is removed and I insert a baffle in that end and weld it to the end cap.
It all looks stock at the end  of it but is louder and flows better.
Cool.
Buddha

I'm already ahead of you on that one. 

[The Buddha]

What did you do.
That baffle I got I thought was really instrumental in getting in nice and burbly.
Cool.
Buddha.

[oramac]

So far, I've removed the end caps and drilled nine 1" holes around the pea shooter.  I also trimmed the pea shooter back, and the combination has made it much throatier.  I don't know if I want to go much further than that yet.  If I decide to, I can gut it the way I did my GS.  I'll have to ride it some more to see if I'm satisfied with the sound.

[The Buddha]

OK the way that SV can works is like it has 3 chambers.
Call it 1, 2 and 3 from the end cap. Closest to the end cap is 1 and farthest is 3.
Gas enters 3 and immediately goes through that metallic scroll part.
It then goes through a tube that connects 1 to 3 bypassing 2. Solid pipe cross the 2 plates that encase chamber 2.
Then they return to chamber 2 through a small hole in the wall between it and chamber 3.
The peashooter gets the gas from chamber 2 and out into the open.
The scroll is the largest choking thing there is.
The thing that you did is, it goes from chamber 3 through to chamber 1 and out through the holes.
Getting the scrolls out flows better but does not make more noise from here on out for you.
I actually didn't cut holes in my end cap. I pulled the pea shooter out, and sent my baffle straight to the tube that conencts 3 to 1. Almost exactly like a yosh oval can.
Cool.
Buddha.

[oramac]

I see.  I've seen a cutaway diagram of the SV cans, so I understand what you're saying.  However, my worry about "free flowing" is would the stock pcm handle the change, or would it need remapped?

[The Buddha]

My ecm was fine. I am yet to mod the TRE or synch the throttle bodies or even fit the IAS mod that I have just got.
Then you can always burn a good map from any suzi dealer for your modded pipe, Its an eeprom. Should be very cheap but they sometimes can gouge you.
Cool.
Buddha.