so i was reading maximum boost by corky bell and it was saying



"in any catalytic-converter equipped car, the wastegate discharge must be put back into the tailpipe before the converter, because all the exhaust gas must pass through the converter."

but then goes to say

" where no converter is required, the opportunity exists to make a completely separate tailpipe soley for the waste gate. a simple muffler may prove necessary to keep noise withing limits when the system is at maximum boost. the value in creating a separate tailpipe here is that it effectively increases the exhaust systems's total flow area. in general, a wastegate will be more positive in response and somewhat more eeffective in controlling boost pressure when accompanied by its own tailpipe"


so would it be more benificial for me to run a separate tail pipe for the wastegate then to plumb it back into the Y pipe? i know it states it in the book but is anyone running this set up?

would it be overkill or not? i don't have to run emissions and i am going to keep the duals so should i just make the second muffler just for the wastegate. is anyone running this set up???

 

dumping the wastegate will help with exhaust flow velocity from the turbo but the noise is the main concern most people don't want to deal with. even with a muffler the wastegate is still going to be loud and raspy.

 

i think that it would probably be loud still if i plumbed it back into the exhaust running 3 inches back to a Y pipe. i think that the exhause routing would be easier imo if i just ran a single muffler off the hot side and then another strech of piping our of the passengers side to run for the wastegate venting. im not too sure. does anyone have any pics of their set ups like this???

my friend just put a t3/t4 on his 7 and he doesn't even have a dump pipe on his waste gate and imo i think that strait off the wastegate is too loud.

 

plumbing the wastegate back in is actually negligable in exhaust noise, it hinders perdormance though but most people are willing to sacrifice that little bit of performance for the weedwacker X10 that you get from a vented wastegate.

 

see i was thinking some thing like this would help with the noise. i just scanned this out of the book but it gives a general idea of what i am thinking about doing.

 

anyone running pics of this kind of set up???

 

The picture just looks like a typical open vented wastegate. It works fine, but is ungodly loud.

 

this is how my buddy runs his wastegate...its an s14 sr20

 

nice pics man. i think that i am just going to try to run it straight out the back so that the drivers side muffler is on all the time and then on the passenger side muffler only makes noise when the wastegate opens. i will take pics and post them once its done.