From what I read EWG doesn't really help with boost creep, actually makes it worse.

 

what turbo are you upgrading to?

 

then your reading the wrong stuff,sorry. i had what ED considered to be the worst creep he had seen at that point. td06-20g with a ported and completely hogged out flapper/port. with the flapper disconnected i could hit 25psi with ease. welded the flapper shut and installed a 38mvs WG(kelly modded my current UP)
i now hold 20psi rock steady. no matter how cold or hit it gets im steady.

 

FP Green

That's what I am concerned about, would rather correct the problem before than have to retune for it in the future. My VF-39 creeps bad enough. Did you decide on what you're upgrading to? Thought you were talking about a bigger turbo yourself a little while back?

 

I would think you'd be okay with the green. Have you spent time in an ewg car? I absolutely hate ewg cars. So freakin noisy. Im about to prototype a muffler that has the same rough dimensions of the stock sti muffler so it looks stock, but be 3". Incorporating 2 slight bends inside to help quite it down even more. I want quite as possible and be quick.

 

They are quite loud. Loud really doesn't bother me that much, heck, it would still be the quietest thing I have, lol. I have a 24v cummins diesel which is about the loudest one they make (pre common fuel rail years), and a harley with a vance & hines pipes on it. Wifes car is quiet though.

I have actually considered routing the dump tube back into the down pipe. I am hearing mixed opinions about the green and boost creep. Just mainly don't want to have to tune it again because I didn't have everything right. I have a maddad whisper on my car right now. One of the quietest exhausts out there under normal driving conditions in my opinion. My only complaint about it is it necks down to 2.5" where the muffler connects to the tail pipe.

Post up that exhaust pipe when you get it done, would like to see and hear how it turns out.

 

I will, going to hopefully get the muffler body lasered and cnc bent in the next couple weeks. Would like to have the exhaust done when the new motor goes in but we'll see, cutting it close for that.
Here is a Solidworks pics of the muffler. On the 2nd picture the dotted line is the path of the inner perforated tubing. From the inlet the exhaust path moves up and over to exit out the "center" of the muffler.

 

^^ That is pretty badass. You doing that yourself? Very creative.

 

nope, my grandma is doing it. she gets tired of playing bunko with the rest of retirees so she does CAD work for me.

 

LOL, she going to do the fab work too? Looks good!

 

Ordered my EWG setup from import image racing, Thanks for the suggestion guys!