Does This Look Normal??see Pic!
Does This Look Normal??see Pic! OK IN THIS PIC YOU SEE WERE I HAVE THE RED DRAWING FROM THE WASTEGATE, ARE WE SUPOSSED TO WELD A PIECE OF PIPE FROM THAT TO THE EXHAUST TUBEING ITS POINTING TO?
Launching!
Joined: Apr 2003
Posts: 243
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From: Phoenix, AZ.
As mentioned, you can run it either way, open (dump to atmosphere) or route back into the exhaust as you have drawn. If you want it not so loud then definitely return it back into the exhaust. Open offers a very little bite more free resistance and less turbulence in the DP.
also will a cut-out on the down pipe help out at all with leaveing the wastegate open like that and what does that piece that is left open do exactly?? im new to this stuff so bare with me! haaha
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TECH Enthusiast
Joined: Nov 2001
Posts: 650
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From: Toronto, Canada
Venting to atmoshpere may sound cool. However, most state emission laws would look very dimly at venting raw exhaust the car would never pass any sniffer tests without the wastegate tied into the exhaust.
BTW, I've tried an open wastegate before, the noise gets very annoying, very fast and attracts way too much unwanted attention.
JMHO, but I would tie it back into the exhaust, you'll still hear it clearly
BTW, I've tried an open wastegate before, the noise gets very annoying, very fast and attracts way too much unwanted attention.
JMHO, but I would tie it back into the exhaust, you'll still hear it clearly
If you didn't want to catch ANY attention then go with a mustang...haha... 
make its own pipe, don't run it to the downpipe itself,people have gained some good h/p running it seperate. run its own pipe down under the car and exit behind the front tire.
i wouldn't run a muffler just straight 3inpipe or whatever your using, cause a turbo is a muffler. less restriction
also backpressure on a turbo car is a bad thing
i wouldn't run a muffler just straight 3inpipe or whatever your using, cause a turbo is a muffler. less restriction
also backpressure on a turbo car is a bad thing
i have heard on imports (vw's audis and subarus) that when you vent the bov into the atmosphere the car riches up a little bit compared to venting it into the exhaust. im not sure if its true or not, but all of them are pretty big on motor things (not ricers) and they all ent into the exhaust
Another thing that you may consider is floating a valve...Now I understand that the turbo is going to give you some back pressure but it's going to be venting BEFORE the turbo...If you don't have good springs you may have a problem with this....Think of it like just running open headers with a little more back pressure...that may be another consideration to think about...Not saying it's going to happen but I'm pretty sure that it's a street car so the more reliable that you make it the better...
Originally Posted by TondSS
also will a cut-out on the down pipe help out at all with leaveing the wastegate open like that and what does that piece that is left open do exactly?? im new to this stuff so bare with me! haaha
Venting to atmosphere with my Tial WG here, its not that bad when its open. As for emissions
It really wouldn't affect emissions because the wastegate doesn't open until it sees max boost pressure that you're WG spring is rated at or where your boost controller is set.....so unless the emissions center puts your car on a load dyno and goes WFOT, then no exhaust will come out of it as its seeing absolutely no boost pressure.
'sides an Turbocharged LS1 isn't exactly street legal unless the kits come with a carb#.....STS I think has that or is in the process of getting that...but for the rest of us turbocharged LS1s guys, we are "really" not "emissions legal" anymore.
J
It really wouldn't affect emissions because the wastegate doesn't open until it sees max boost pressure that you're WG spring is rated at or where your boost controller is set.....so unless the emissions center puts your car on a load dyno and goes WFOT, then no exhaust will come out of it as its seeing absolutely no boost pressure.'sides an Turbocharged LS1 isn't exactly street legal unless the kits come with a carb#.....STS I think has that or is in the process of getting that...but for the rest of us turbocharged LS1s guys, we are "really" not "emissions legal" anymore.
J