Originally Posted by bugeye-brawler
my problem is that i have a 1995 legacy and it doesn't run on the OBD II system or whatever it is called... So they stick a hose in my tail pipe to see if everything is ok, But if my internal waste gate is blocked and everything is just being dumped out the external wastegate won't I fail emissions?
I dont think you realize that an external wastegate does not
replace your exhaust.
Stole this photo from Sefarious in the ebay turbo thread.
If the internal waste flapper is welded shut (hole on the left), exhaust gases will still go through the turbo and into the downpipe/exhaust.