Keep one thing in mind Rick, if this Bisi does not bolt up .... everything else .... will not bolt up as well.

If you look at what another user did, he simply modified his oem 2018+ Sport hanger, to accommodate the changes Honda made, so that he can accept any exhaust made for 2015-2017s

 

Dude bro? Not that concerned with the hanger.

 

on one hand, I hear "not concerned" ... but I also heard the following:

"probably would not have ordered the exhaust"
"excitement is waning"


judging by your other posts, you seem handy and I have no doubt that you'll tackle this issue just fine. I just hope you dont pay muffler shops to start cutting stuff and welding stuff, unnecessarily

 

Unnecessarily? Is there something you'd like to share with the group??

 

we had 2 owners, 2018 sports.

-one person pad a shop to cut a hanger, and weld on a new hanger
-one person modified his oem hanger, and made it fit with little effort, and no shop labor


perhaps "unnecessarily " was a bad choice for words. my opinion is, there are always other options. in this case, there was no need to cut or weld

 

^^^^^^^THIS^^^^^^^
This is what I am concerned about.

 

Well, Bisimoto online store says this is for 2015+ Honda Fit. And they have 3 units in stock.
So obviously they do not know about the changes for 2018 MY.
And they will not be able to re-design the piece until they get a hold of a test car.
So in the meantime they should simply edit the info and change it to 2015-2017 Honda fit
Simple.
I have no stake in this (and I live kinda far away, lol) but people who are interested in this exhaust and do live somewhere close should perhaps pay them a visit... and explain what's going on.
I know this is the age of instagram, but if you need shit actually taken care of you better see to it in person.

 

Apparently the change is only for the Sport trim .

 

I reached out to Ari at Bisimoto, lets see if she replies with an answer in regards to shipment speeds (or lack thereof)


At this point everyone, we're gonna hope someone steps up, and creates some kind of "adapter kit" for 2018+ Sport owners, so they can adapt their oem hanger to accept any after market exhaust. The last thing we'd want is for every 2018+ sport owner to custom weld/modify every exhaust purchase throughout the entire ownership of their car as this is not only expensive, it renders the exhaust useless for the majority

 

I reached out to her this morning also regarding a ship date for my exhaust.

 

Well, lo and behold... Guess what is on a UPS truck, out for delivery to my house today?

So, today or tomorrow (probably today...) all will become clear regarding the fitment of this exhaust. I will take many pics...

 

TONS OF PICS ....... we need to get down to the bottom of this "2018+ sport hanger" does not fit issue

 

So... I just did what I will call a "preliminary" installation. First off Ben's (freak4afit) exhaust shop guy wasn't completely wrong about the exhaust flange issue.

Here is a pic of the two flanges side by side. Although the stock flange has smoothed and rounded edges, the stock exhaust gasket in the next pic fits fine in the Bisimoto.


Stock exhaust gasket and hardware


Here is the stock gasket in the Bisimoto; no problem.

The problem with the Bisimoto flange is that the bolt holes are too big. If you look back to the first pic you can see the difference. The size of the holes matter because the bolts have shoulders at the end of their threads. Those shoulders allow the bolts to tighten against the exhaust flange. If you look at the stock exhaust flange bolt holes you can see the "witness marks" where those shoulders tighten against the flange.


In this pic of the stock exhaust if you look closely you will see the shoulder of the bolt snugged up against the back side of the flange. The Bismoto flange holes are too big; they allow the shoulder in the bolt to pass thru.

This issue is easily solved by adding a washer between the Bisimoto flange and the shoulders on the exhaust bolts. I will find some washers in the morning and take more and better pics. FWIW I found that ziptie-ing the springs to compress them made it way easier to get the nuts started.

As for the hanger, yes it was waay off. Not a great pic here, but the hanger was too high and too far to the right (kind of like me...). I put the hanger in a vise, applied some heat and was able to move it around pretty easily.

Unfortunately some severe weather was rolling in and I had too close things up. Tomorrow morning I will pull the exhaust back off, finish tweaking the hanger and reinstall with some washers on the flange bolts. I trimmed off the unused portion of the the universal rubber exhaust hanger I am using and will post pics of that as well.

I did take a minute to start the car and have a listen. The exhaust sounds awesome. I am looking forward to a long test drive tomorrow...

 

good pics Rick. cant wait to see the outcome!!!

the sound tho .... that rumble/burble/bubbling/pop-pop-pop sound.... isnt it to die for?!

 

I just finished the final install of the Bisimoto. I pulled the exhaust off retweaked the hanger and reinstalled everything using washers to properly set and secure the flange bolts.

Here you can see the added (black) washer I used between the shoulder in the flange bolt and the Bisimoto flange. As previously mentioned using zipties on the springs during installation is the way to go.


Here is the flange after a final tightening. Other than needing those washers I found no other issues with using the Bisi flange on the stock midpipe.

Here are a few pics of the final bends I put on the Bisi hanger



I bought a universal rubber hanger with several holes. I ended up using the two closest together and trimming the rest off. A "standard issue" universal two hole rubber hanger would probably work best (I may swap mine out at some point, maybe for a nice red one...). I haven't put calipers on the car hanger or the Bisi hanger to get their diameter, but I can tell you my rubber hanger was a little too loose in the the holes. And with only one hanger it's helpful to have a tight fit to help keep the exhaust from moving around. I put two layers of heat shrink on the hangers before installing the rubber hanger. Electrical tape should work fine as well.


Here is a pic of the final hanger install.


And here it all is after everything was installed and tightened.


The view from behind (he he), nicely centered. The exhaust is rock solid with the little bit of wiggle you want from the rubber hanger.


This exhaust is so stealthy that once installed you literally cannot see it without bending down and looking under the car.

My comments to Bisimoto on the installation:
1) In my opinion Bisimoto should consider either a) reduce the diameter of the bolt holes on the flange, or b) include with the exhaust, two more washers and instructions on where to put them.
2) The hanger... Again, in my opinion, Bisimoto may be better off not welding a hanger to the Fit exhaust at all, enabling them to stay with one configuration for all GKs. They could then include model specific hangers, like the one below.

It would not be as elegant (or cheap) as welding a single hanger to the exhaust, but the exhaust is already invisible, and as for cost, the profit margin on these exhausts (in terms of parts and labor to build) seems like it would be sufficiently high (it's a relatively simple design) to include some nice stainless hardware at a nominal added cost. Additionally two hangers would provide for more secure mounting...

I did take the car out for about an hour to test out the the exhaust...

Performance: Those additional "5-7 HP" do make a noticeable improvement in performance, particularly at WOT. Between the AEM intake, the Bisimoto exhaust, and the Eibach lowering springs, this car is a blast to drive on our many twisty country roads here in Southern Maryland. With the CVT in sport mode and revs kept in the ~4-5K range the car is alive. It still is not going to win any drag races, but once it is moving, it moves...

Sound: From outside, the car sounds wonderful. It seems Bisi and friends did a nice job with sizing and placing the "pulse chamber" . However in my opinion, inside the car it is waaay too loud. After an hour in the car my ears were ringing. I believe this may have less to do with the exhaust, and more to do with the lack of sound insulation in the Honda Fit. Regardless, bottom line for me is that sound levels in the car are unacceptable. I will be researching and installing Dynamat or whatever it takes to quiet that cabin down. Maybe our resident audio specialist (BG1985) has some opinions and advice he can share on this topic?

Despite some of the hiccups to getting and installing the Bisimoto, overall I am very pleased with the exhaust. I will be more pleased when my ears stop ringing and the Motrin kicks in...

 

Glad you made it work.
This is what car mods are all about. You get to test your skills and with proper tools and patience to experiment you get things to work.
Having said that it is pretty obvious this is not plug-and-play solution, so you either take car of little issues yourself, or pay someone to fix it.
I which case it can get expensive.
This is a straight pipe and a big one at that, so I'm not surprised it's loud.
Definitely not for everyone, but has a definite race car vibe, at least from what I can tell watching videos online.
Could you get a quick one recorded by any chance?
That would help those who are on the fence on this one....

 

Who are you, Tony Robbins?

From outside the car, the exhaust sounds awesome, and not excessively loud. It's weird; it's like the exhaust is louder inside the car than outside. I have a ~40 minute commute; I drove in to work this morning wearing ear plugs. Yes, I will try to make a decent recording.

Ear plugs aside, it was a really nice commute this morning. The car is very different than when I drove it home from the dealership; it does not feel or sound like an econo box; still not a drag racer (never will be) but handling and passing power are significantly improved.

As for the interior noise, help is on the way in the form of 1) rubberized spray undercoating, 2) , and 3) . I will of course start with the hatch area and go from there...

 

Geez that would not be a pleasant ride. I've had loud exhausts on my vehicles before, and I've outgrown it lol. I went with the HKS silent hi-power and it's more subdued and blends in the background in my 1+ hour commute. When I first put it on my wife actually liked it and wasn't bothered with it at all.

It's probably louder with a manual since the gearing is so wonky on the 6MT.

 

I wonder if it has more to do with the fact that it is discharging underneath, versus directed out the rear. I know you always take care of us, but pics will be nice for the sound deadening install.

 

Throw a thick moving blanket in the spare tire area to see if that helps? Cheap and easy till you can do the rest of your sound deadening mods.