We're gonna go ahead and jump into the main topic of this video and that is to
be changing the downpipes on the rs4 um i've already been under the car and i will say that
there is a bit of a surprise under there and i'm gonna save that for you guys because it's
really ridiculous it's something that the previous owner one of the previous owners did to this car
um when you guys see it you're gonna freaking laugh because it's so ridiculous so let me show
you the down pipes themselves i have them in the box still let's go over here and check this out
they're really nice looking uh it's from a company called zinram engineering they're
out of Germany so they are a little bit uh larger in diameter than the stock system
um so i do have some adapters in here you can see we're stepping down to the factory exhaust
so i do have a little step down here then we have a butt connector this will link us up from
you know this into the stock muffler system so this is what we'll be installing um you know still
has high flow caps on it because i am in Maryland so i need to pass emissions uh every two years so
i wanted to make sure that i got something that's not gonna be a pain in the you know in the future
we also have rear o2 sensors so these go in after the cats so they'll go in down here um those are
also a real pain in the to get to on this car um i do know that the i guess the connectors themselves
or the wiring for them is up on top of the transmission
so uh it's a really tight space in there i've already looked under everything so i know it's
gonna be a real pain in the but uh you know we'll go ahead and get under there and and
get to it so i'm not sure if the exhaust is gonna sound any different with these downpipes
i think they might be a little bit louder because they don't have the pre-cat on there
so what we'll do is we're going to do a cold start before we do the install and then we'll
do an after at the end of the video so you guys can see if there's any kind of difference
i do have a really nice microphone on here so you should be able to hear the difference pretty well
all right so this is a little surprise that i wanted to show you guys i don't know if
you can see up in there you probably can't because i got light on it but there is a
c clamp holding the down pipe to the end of the manifold so i obviously did not do
this because i would never do something like that but one of the previous owners used a c
to hold that on which is absolutely insane to me i cannot believe they
did that but yeah so that's that's one of the surprises underneath of this car um
yeah so now i guess we'll get in here and start hacking these down pipes off
you see this is the reason i'm really replacing them is the flex pipes are starting to come
apart again these things aren't you know 14 15 years old so they definitely need to be replaced
okay so i finally got the passenger side downpipe off and all i can say that
was miserable absolutely terrible so i wound up taking a sawzall to it and you can see
just cut this piece off here um the bolts the top bolt was impossible to get to
so end up just sawzalling that off too we got the rear of two sets are out the
one in the pre-cat uh the upstream one is kind of a pain to get out it's just shearing off so i may
end up having to buy just another o2 sensor and put a new one in up front with the new down plates
so yeah so that was took me a couple hours to do that miserable and we still have to do the
driver's side hopefully that goes a little bit easier than the other side okay so back under
the car and what we're going to try to do now is we're gonna drill this out over on this side the
other ones look pretty good i'm gonna drill it out to 3 8 which is the size bolts i got here
i don't know if you can see it or not but when they drilled out that stud that's in there
they put a really small drill bit in so we're going to try to do is drill that out some so
we can get a good size bolt in there when it's sturdy and that'll hold this really well so i
do want to make sure that this 3 8 bolt does not fit in there so you have to drill these out just
a little bit too it fits in that one pretty good but this one's gonna have to be drilled out just a
little bit more if you guys can see it or not and wants to drill that out i'll tell you there's just
no room to work on anything under this car it's it's ridiculous
so yeah so we'll go ahead and drill those out um and then we'll be able to bolt up the new uh
the new downpipes all right so we finally got them off it's now 10 30 at night i started at
10 30 this morning so i've been working on this for 12 hours i had a little bit of help from my
friend uh he came over here to help me cut these things off so here you can see finally got him off
um god it was miserable so you can see we cut it off at the flange up here
um yeah it was just so bad but anyway we got them off um i need to do some drilling need to do some
drilling on the driver side manifolds to get them you know bored out to that 3 8 of an inch so we
get real good bolts in there real solid bolts so uh we'll probably do that tomorrow and then
i did have to order some new o2 sensors so we got the downstreams and i went ahead and ordered the
upstreams might as well do it while i'm in there and they should be here later this week
and then i'll dive back into it and get these new uh these new downpipes these are downpipes we'll
go ahead and get them installed in the car so yeah it's been a fun day um freaking tired as hell but
uh i guess the hardest part of the job is now done so uh we'll pick this up a little bit later
all right guys so the o2 sensors finally came in took a couple days for them to get here and now
i finally have some time to actually work on this uh so you can see we got the two wide band sensors
here and these basically go up on the upstream piece of the down pipes which is you know up here
and then we have the rear o2 sensors so these are not wide band but they go back
here in the downpipes so yeah so we'll go ahead and get this thing started and hopefully we get
this done today i'm tired of working on it uh so let's get into it all right so you can see we got
everything cleaned up the uh holes are bored out to a really good size three-eighths of an inch
so this is on your passenger side um driver's side a little tighter in here might be harder
to see but we got that all drilled out to three-eighths and we're ready to bolt up the
uh the pipes um i do know that with the uh i guess the reducers it is a little bit longer
than the stock downpipes were so we are going to have to make some cuts on the stock muffler pipes
to compensate for that so we'll go ahead and get started on all that
we finally got the downpipes all buttoned up to the manifold we've got some really good heavy duty
bolts in there uh torqued down to about 40 newton meters um such a pain to get to i mean as you can
see it's really it's even hard to get a camera up in here but we got them tightened down this
is the passenger side um and then i don't know if you can see this or not but here is the driver's
side we've got those tightened down real good too again nice solid bolts so now all we have to do is
put in the uh upstream o2 sensors so you can see they're also a little bit difficult to get to
but i think that'll be a little bit easier than getting to the top of those bolts um
let me there's not a lot of room in here yeah so we'll go ahead and get the o2
sensors in um and then all we have to do next is tighten up these uh connectors back here
and put in our rare o2 sensors and we should be done with this project thank god i just wanted
to show you what i had to use uh to get to those bolts so in order to get to the top so there's a
nut that i have on the top of that 3 8 bolt i had to use a cruise foot and a really long extension
this is a 3 8 drive so i you know basically stuck that up there held the top of the bolt
or i should say the nut that's on the back side of the bolt i'm in place with that and then i have
this wobbly extension which is a lifesaver because the o2 bung is totally in the way so then we have
that to a 3 8 extension and this is a half inch drive torque wrench so i have an adapter on that
and that basically gave me enough i guess length to get up there and get everything tightened down
so i mean if you're planning on doing this make sure you have plenty of extensions i
can tell you this wobbly adapter is a huge lifesaver and then so is the crow's foot so
that's what i would recommend if you're planning on doing a downpipe replacement on the rs4
all right so there you guys have it the downpipes are now done there's no check engine light for
the uh o2 sensors so that's in a really good spot uh it also doesn't smell as bad as it did
with the cats that were blowing out the oem cats so that's it for today i should say for this week
um it's been a great project kind of pain in the but i'm glad i did it
feels good when you do things for yourself like that so it's done ready to go in good shape
so thanks guys for watching i really appreciate it if you enjoyed this video click the like button
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