Hey guys, how's it going? Pawinn here and welcome back to my garage for another DIY technical video,
it is awesome to have you guys here. In today's video we're gonna be installing
this Greddy Supreme exhaust system. It comes in three components,
the main muffler system the exhaust tips are right in front of me and the
two remaining pipes are right behind me. After this video if you guys are
interested in purchasing one of these systems yourself, I'll leave a
product link in the description below. So full disclosure, I had been in the market for
an exhaust system for a while now and I've been debating on purchasing this
system or a system from MAPerformance. My buddy Tristan was planing on
trading in his 10th gen civic for a 10th gen accord, so he offered me the system, which
is in really good condition... he only drove about, I want to say a couple
thousand miles on this exhaust system, probably not even that much, but he
offered it to me for $500, so I decided to jump right on it. Now before we
actually get into the disassembly of the stock exhaust, I wanted to quickly go
over what I actually did to prepare this exhaust system to be installed into my car.
Because I bought this [exhaust system] secondhand, the first thing I had to do
is actually order a new set of exhaust gaskets. All I really did to get the
correct size was measure the inner pipe diameter that I needed, and also get a
rough idea of the general shape [of the gasket needed]. After I got the measurements,
I went online and and found the correct size gaskets from Vibrant Performance. Huge shout-out to
them for getting me these gaskets so quickly, they literally came in like five days.
So thank you for that. So for OEM [exhaust] hardware I went to BKay Honda
parts in order to purchase a new set of exhaust nuts. These exhaust nuts are the
ones that bolt the front most pipe of this exhaust system to the down pipe (or
the crossover pipe that runs underneath the oil pan of the car). Now in addition
to these exhaust nuts, I also went to Autozone and purchased a new set of
exhaust bolts and nuts to piece together the remaining two pipes of this exhaust system.
of course I'll try my best to leave product links in the description below
in case any of you guys want to purchase the same parts that I showed here.
So the only thing that I did to actually prepare the car for this
assembly was spray a little bit of penetrating [oil] on the three exhaust
nuts that I talked about previously, as well as spray some WD-40 on the exhaust
hangers just to aid in the disassembly a little bit more.
The first step was to safely support my civic onto service ramps,
and support the rear section on jack stands. Be mindful of any plastic trim components doing so.
Locate 5x 10mm bolts and remove them to begin removing the belly pan
Loosened/Removed them with a 10 mm hex socket + ratchet
Following up the sides of the belly pan, there are 2 plastic trim clips that help secure it to the chassis
Pry the center of the clip out to unfasten the clip. Then pull it out by hand.
I found two more plastic clips in the center of the belly pan to remove in a similar way.
condition of the front subframe after ~35k miles.
Like I mentioned earlier, soaking the exhaust nuts/studs with penetrating oil helps free the hardware threads from corrosion.
Spayed some WD-40 lithium grease onto the 7 rubber exhaust hangers to aid in their removal.
Next, I removed the 3x 14mm exhaust nuts from the downpipe.
Before removing the exhaust hangers, I decided to support middle of the exhaust with a jack.
Then I proceeded to pry off 5x of the hangers, working my way back to the exhaust tip.
Not sure how the rubber will age, but after 2 years the hangers were fairly easy to pull off the mounts.
Working alone, I left the last two exhaust hangers on so I can lower front of the stock exhaust to the ground first.
As I slowly released the jack, I was able to wiggle the front of the stock exhaust free from the DP.
Now to pull off the last two hangars, I first supported the rear mufflers with a jack.
Then I pulled off the remaining rubber exhaust hangers, and then lowered the entire system out from the car.
Alright guys so I have the stock exhaust taken off and I placed the Greddy
Supreme exhaust system right next to it just to get a better idea on how
everything kind of lines up. Now I'm going to need to transfer all the
exhaust hangers. I noticed that I'm not going to need the side most exhaust
hangers at all, because if you look on this exhaust there is no place to hang
those, and actually overall if you just look at both systems side-by-side this
system is much much thinner than the stock exhaust. I'm gonna get right to
transferring all these exhaust hangers and then we're gonna begin bolting up
Did a quick clean up on the exhaust flanges before installing any new exhaust gaskets.
Doesn't need to be perfect, but you want to get any loose corrosion brushed off and the mating surfaces ~clean.
installing the front exhaust gasket. Fitment was a little tight on the studs, so I chose to drill out the holes for the studs with a step drill bit a tad.
Now I installed the front pipe of the new exhaust system onto the studs on the DP.
I installed a few threads on 2 of the exhaust nuts,
then mounted the pipe's exhaust hanger to the factory mounting point.
Alright guys, so I'm pausing here because I've run into a few issues. The
first issue is that I couldn't use one of the three nuts on the last stud on
the other side of the pipe here. I had to use the original nut that threaded on.
I think it's probably just a different [thread] size, obviously that's my mistake.
So for now I'm using the old nut to thread onto the actual stud here, but on the
other two, they threaded on just fine. But the bigger issue that I'm noticing right
now is that the larger diameter [transition] is actually causing me to have clearance
issues fitting a socket around these actual exhaust nuts
Fortunately, I can still fit like a box end of a wrench I might be able to
squeeze in a ratchet [wrench], but this is something I didn't expect on doing.
I'm a little bit frustrated but I'm still gonna power through and complete this install.
I balanced the mufller section of the new exhaust with a foam pad on the jack and carefully raised it up.
Once I was satisfied with the height, I installed the 4x exhaust hangers to the factory mounting points.
To fit the mid pipe under the car, I started by balancing one end on my jack so it holds to the rear muffler section.
Doing so allowed me to install the other end to the front pipe with a new gasket and new hardware.
Then we can bolt together the mid-pipe to the rear muffler section.
I wasn't 100% sure on torque spec to use on these nuts/bolts, but since they're grade 8
I was confident a few zaps on my impact wrench would be sufficient. (will update if anything loosens).
A few comparisons stock exhaust vs Greddy Exhaust from a few angles/cameras.
Alright guys so we are back and it's been about a week or so, and frankly, I
just I just got kicked out of this parking lot that I was filming some
final shots with. If you guys didn't notice I did change my taillights in the
past week that I've been driving on this new exhaust system so I'm still working
on the video for that. So this Grady supreme exhaust system
does a really really good job in enhancing the lower tones of the exhaust
note without necessarily giving it a lot of drone. Cruising here around *2500* rpm
there's a little bit little bit of drone here it's a little bit louder on the
highway when I'm cruising around in sixth gear, but honestly you guys can
still hear me just fine I'm not really trying to raise my voice talking to the
camera. I really like that it's aggressive but it's not loud and I think
my neighbors are gonna stay happy. Let's see if I can get it let me see if I can get
a good [exhaust] crackle here.
oh my god.. every gear... yes yes! I'm so stoked about those
crackles for some reason because a lot of people have commented and asked me if
I had a [custom] exhaust in my car while the car is pretty much stock aside from the
shifter mods. So aside from the slight difficulties
with two clearances when installing this exhaust system overall it was a breeze
to put this exhaust system in. After driving it for a couple days now, I'm
extremely happy with the decision of me with this part. So if you guys enjoyed
this video please consider hitting the 'like' button and also consider
subscribing to my channel below. Don't forget to check me out on Instagram and
Facebook as well. I'm going to try to post more of teaser updates with all my
projects and products that I work with just to kind of give a little bit more
hype and anticipation before the videos that are released afterwards. so with that all
being said again my name is Pam song and I will catch you guys in the next DIY video, bye!