how is this 3" downpipe supposed to fit in 2.5" garret sv?

[GLHNSLHT2]

I ran a 3" TU donut in my 2.5" SV for years. It just wears it's won pattern in and seals fine. go for it.

[Moparbishi]

works fine. just make sure the bolts are tight and tighten them a little on each side back and forth till the tight.

[dirtyglhturbo]

Quote:

Originally Posted by Screamin4banger Ya wanna hear something funny? Whenever I would have an old beater that wouldn't pass the IM240 test here, I would go home, drill some holes in the exhaust under the car, and go get it passed the same day

hows that work? you'd get a dilluted exhaust sample if you did that.

[Mike_shepard]

Forward motion used to sell a 2.5 to 3" downpipe. I had one but now have a full 3". Not to relavent to topic but just alittle info

[Screamin4banger]

Quote:

Originally Posted by dirtyglhturbo hows that work? you'd get a dilluted exhaust sample if you did that.

Well there's some redneck engineering involved. I didn't just drill crazy random holes in the pipes - if the car was too loud or if something seemed fishy they might roll a mirror under there. I drilled little holes 1/4" or 3/8". Holes added towards the engine would draw O2 into the hot exhaust to drop the HC as then combustion completed in the pipe. Holes added back after the axle would dilute everything a bit to drop HC, CO, and NOx across the board. It was a way to nudge a tired car onto the good side of the limits. It wont pass a V8 with 3 dead misses. I would fix something like that - I just felt that if my cars idled fine, drove fine, and got decent mileage, they were fine.

Another thing to consider is that these weren't mechanics nor did they work for the state. WI built test facilities that were run by an independent testing company. The guys and gals doing the tests were employed by the contracting company and the only real requirements to be hired were that you were 18, licensed, and could drive stick.
I guess when my school handed me a cert that said 'Emissions' on it in bold letters I didn't like the idea of some $10/hr smog-jockey standing between me and my license plates.