To plumb or not to plumb? What route did you take?

 

Plumb it out the side, and watch for cops

 

How does a wastegate sound compare to BOV??..Im gonna be using a BLitz super sound with HKS std wategate and just wondering how both will sound. And does wastegate sound vary from the TYPE?..Anyone have a std HKS wastegate that can tell me how it sounds like???

 

wastegates dont have a "sound" like a BOV. but when they open up, it will sound like you have a straight pipe.

 

for a street setup where sound matters, i reccomend venting the wastegate into the exhaust system. i dont see any downsides of venting back into the exhaust system. if you dont care about how loud your car is, save the extra work involved and just vent the wastegate to the atmosphere.

 

for the street plubing it back to the downpipe is the way to go..just make sure the hole in the downpie is the same diameter as the wastegate outlet..the only problem is that plubing it into the downpipe can put extra backpressure in the sytem and can affect efficent wastegate operation.

for race/strip applications wastegate discharge should be to the atmosphere.

 

Venting the exhaust incorrectly back into the exhaust can cause problems, it is important to make sure you vent it back into the exhaust at a minimum of 14 inches from the wastgate. if properly plumbed it can see major increases over ones that are just plumbed back in. Like Poweraxel said make sure the hole is the same diameter of wastgate and try to have it transition back to the exhaust as smooth as possible this will help with scavanging and reducing backpressure.The best solution would be to run a open dumppipe but it is very very loud once the wastegate opens since that becomes your exhaust it's almost like running without any exhaust at all. It's just way to loud for the street.

 

definitly out! you will thank me the first time you hear it open! **** the cops!

 

I had mine out before it don't bother me but for 99% it's just to loud.

 

Mine was plummed back in and I liked it that way. My buddy had his vented to the atmosphere and while it was cool (for a little while) I am glad mine wasn't. Most people will get sick of that noise... it's VERY, VERY loud. Think of a chainsaw at full song... and you're close.

 

 

What about the train and duck whistles?
Possibly kazzoos.

 

WellI'm not sure this is the answer you were looking for but how about both?
What I mean is, vent to atmosphere with a muffled wastegate. This is what I plan to do. The volume of air needs to be kept high in both the wastegate and exhaust and you do not want to disturb the velocity of air in the exhaust but you want it quiet enough for the street. I am going to make (or buy) a small muffler for my wastegate. I would imagine you could find something to work with instead of fabricating it.
I have not looked into this much because I just assumed a turbo shop would stock something I could use.
I am having a custom exhaust made and the last thing I want to do is dump cash into that and then screw up the flow by dumping wastegate gasses into it.

Just my opinion.

Steve

 

Please keep me informed of your findings Steve!
Thanks.

 

a muffler on the wastegate will cause too much backpressure, making it difficult to keep steady boost.

 

Joe,
How would having it's own muffler cause more backpressure than running it into an allready heavily taxed exhaust tube? I mean the motor is allready dumping 100% of it's gasses to the exhaust pipe. All you would be doing is removing these and venting them through a seperate muffler. It would not need to be large because it only has to vent enough to drop boost back to whatever setting you desire. The majority of the gasses still go through the exhaust, but expecting to send the wastegate gasses into the system you just took them out of seems kinda dumb to me.
I am no turbo expert. This is all just what I plan to do on my settup. I am however using logic to decide whjat I think will work.
I know most kits dump it back to the exhaust, I just don't know why? Probably cost and emissions. I would bet you would have no hope of passing emissions with the muffled wastegate settup. I do not concern myself with your ozone. I figure my car will get run about as much as a drag car and they don't need to be smogged. I also live in an area with no testing so **** on it!

"Just cause your paranoid doesn't mean they're not out to get you!"

Steve

 

If you plumb it back to the DP, I recommend a bellows pipe so that you don't crack your exhaust.

Adding a muffler to the wastegate is fine. This is nothing new. Hehehe, yeah, the Emissions Gestapo would frown upon this, though.

 

How loud would it be to vent to the atmosphere an HKS 7psi std wastegate?

 

Imagine running an open downpipe.

 

eeeeeek..

 

It is going to be too loud for 99.9999% of you guys,mine sounded like I was going WOT under a bridge or tunnel, if you live anywhere where cops are even slightly ********, you WILL get pulled over.I too thought about putting a muffler on also, I just wound up not doing it, as far as cost is concerned that has nothing to do with it,it costs more to have it welded than to leave it alone. It's mostly done because it's not emmisions compliant and mainly because it's too Fk'n loud.If you had to do it make sure you point the exit to the driver side rear tire preferably right towards the front of the rear,believe me it will be quieter as the sound will have to go that much further before exiting out from under the car, instead of right out the passenger side. It works but it is still way to loud for street use.

 

Why not just dump the SOB and not get on it around the cops... considering it won't open unless you push it past 3k or so depending on your situation. Also believe me nothing feels better that wizzing by cars @ WOT doing 90+ and see them scatter like little roaches thinking a Plane just did a flyover. One of my friends told me that when I passed a couple of cars on the h-way @ WOT they ran off on the shoulder . Ahh... life is great sometimes. Dump it. actually you should put somesort of devise on it to quiet it down if your hair is going grey . I always hate it when I see some old guy with a louder car than me.
Ryker
P.S. I'm running an N1 Duel w/ a HKS w-gate dump

 

SCREW THE TICKETS MAN! I have a court date coming up b/c of my dump! I don't know how much money it will cost me for the ticket. Really, it is cool for the 1st week or 2 when it is out, but it gets really annoying after that. If I were you I'd put it back into the exhaust and not worry about it. Cops can hear you for miles, I swear!

Bryan

 

It really comes down to if you like it loud or not.

I had mine vented to the atmosphere. You could hear me coming 10 blocks way at WOT.

I liked it, some other didn't. One friend had said "Yeah, its cool. But it takes the 'refinement' away". He made a good point.

But still, I liked it open. I raced a TT Supra once on the road, and he had started before I knew we were racing. When I blew by him, I shook his car; or at least that was how he described it to me.

Personal choice, thats all.

Mike

 

i want to see a picture of a plumb wastegate to the exaust.