Sorry to be redundant, for those of you who answered my last question (I appreciated the responses BTW).

I just want to weigh all my options on this. The co-owner of the car (my father-in-law) isn't too keen on running the WG back into the DP right now.

I'd like to find out if anyone has muffled it separately, or at least what the advantages and disadvantages of each are. I've read up enough to understand plumbing it back to the DP, but haven't seen much on the separate muffler.

Thoughts?

-E

 

there are no real performance advantages of plumbing the wastegate into the downpipe. mainly, the noise that the wastegate makes. but if you were to plumb the wastegate into the downpipe, make sure it is far away from the turbo. see picture:

 

Noise reduction is what I'm after, but what about the separate muffler for the WG? Anyone have one?

TIA,

-E

 

A lot of the DSM guys running externals to the atmosphere use the supertrapp disc only mufflers. They're small and get the job done. Go to http://www.racerpartswholesale.com/ and click on supertrapp. The disc only style is right at the top.

jeff

 

Probably could be done. There are major space limitations. The pulsing affects of the wastegate plumbed into the exhaust are MINIMAL at the most. Yes it will make a difference but you are running a muffler anyway in your exhaust system. You haven't taken 400 to 500 LBS out of your car to make it competitive on a race course. You are probably not running high boost pressures 25 + LBS.

Just plumb it into the down pipe as far down as possible, use mandrel bent tubing with as few turns as possible, use a competent welder and Y the connection as long as possible into your down pipe.

Trust me and make your life easy.

 

I found a cheap glass pack muffler with 1.5 inch connection sizes at a hardware store, its meant for garden tractors and small diesels, but I am gonna give it a try, its only ten bucks plus clamps...Max

 

why would you hinder the airflow of your wastegate just to improve your ears. That would ba additional backpressure on the air thats getting out of your turbo system to cause a stable boost.

 

This from the guy who said a T-78 is too much for the street.

 

I said that? I always thought it was too small for the street Now, 500rwhp is too much for the street Its just scarrrrey with trees and telephones all over the place

 

Yeah, big stone walls aren't too fun either. I bought a Garrett T-76, but I'm not sure what I'm going to do with it. I may try it out on my car just for kicks, but I think it's better suited for a 20B.

 

One reason: dB requirements for the autoX. I have to stay under 95dB. I very seriously doubt I'm under that now. If I can't muffle it, I can't run. Gotta do it one way or another.

-E

 

Honestly, like beyoond said, it would be a goo didea to routh it back in to the downpipe, its cheaper and it wont hinder the performance.

 

I think you guys have pretty much convinced me that's the way to go. Now I gotta find myself a good muffler place to do it...without touching my paint.