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2000 Honda Civic Ex
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Discussion Starter #1 (Edited)

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Discussion Starter #2 (Edited)
Extra Large Granny Smith


I started to take off my header after spraying PB Blaster on it the day before, to my friends house and after I got there.



Came off fairly easy.



Here is a side by side comparo


The old gasket vs the new 1.


S pipe


Exhaust installed. Doesn't hang low at all.


I have to take a few more pics of the final install later, because I was in a rush to finish it. It took me about 6 hours installing it. A lot longer than I thought. It was my 1st time.

The exhaust tip matches up really good, about 1 inch before the outside of the bumper cutout. I'm keeping the silencer in, its really loud without it off, even though it feels faster without it. I want to mod the silencer because i get a little rasp with it in around 3,000 RPM. I think some electrical tape around the lip of the silencer will stop air from going past it and making that sound I assume. Or cutting some of the tube coming inside the exhaust.

All in all, I definitely feel my revs going up smoother, no bogging or stumbling like it did before with my hollowed out cat. Came with extra bolts and a gasket. Downpipe is very close to a bolt on the bottom of my engine. No rattles though. My exhaust wrap should be here in a couple days. Hopefully it will preform better.
Can't complain really, except no O2 sensor even though it has 2 O2 bungs in the Hi-Flow Cat (that's why I bought this 1.) 1 points down, the other points to the passenger side. Shift linkage got in the way. Had to tilt the headers a bit to clear the bolt better.
Mocked it up and then after I got everything on, went back and bolted it down tight.
It leaked from a couple gaskets and the head. But I tightened them up with my breaker bar and all is well. And Oh yeah. I complained to them and they told me if I leave a 5 star positive review, they would give me back 30 % ($52.50) which they did yesterday.
$122.5 after refund. + $30 for 1" x 50' of titanium DEI header wrap = $152.50

VERY NICE!
 

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Retired From Hondas
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OKay..

Well, the cheap gaskets in that kit shouldnt be used.. Also, if you have finger prints on any exhaust gasket, it will burn up and cause a leak. Torquing your bolts down with a breaker bar isnt the correct thing to do. I think its 18/ft lbs for those bolts/nuts.


As you can see, the "grapefruit shooter" muffler is reduced to about the size of the stock system you just removed. So your smallest point in the exhaust system will make it perform like that particular size..

For example:

If you have a 2.5 tube thats crush bent on the turns, the crush might be 2.10" (for example) so your exhaust will flow like a 2.10" exhaust system.

If it were me. Id cut off that circa 2002 fart can and weld up a real muffler.


Cliffs:
-Use OEM gaskets and clean them from finger prints
-The smallest point in the exhaust line will make the whole exhaust perform like that size
-Delete the fartcan for a real muffler that can reduce rasp and noise.
 

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2000 Honda Civic Ex
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422 Posts
Discussion Starter #4
OKay..

Well, the cheap gaskets in that kit shouldnt be used.. Also, if you have finger prints on any exhaust gasket, it will burn up and cause a leak. Torquing your bolts down with a breaker bar isnt the correct thing to do. I think its 18/ft lbs for those bolts/nuts.
I wiped down the header before i started the car, I remembered that :)
I tighten them down to where it felt it was before I took the OEM header off, I'll torque them when I put the header wrap on



As you can see, the "grapefruit shooter" muffler is reduced to about the size of the stock system you just removed. So your smallest point in the exhaust system will make it perform like that particular size..
I think I'll enlarge the silencer hole a little bit bigger, its pretty quiet cruising but not really loud flooring it. I want to play with the silencer 1st.

For example:

If you have a 2.5 tube thats crush bent on the turns, the crush might be 2.10" (for example) so your exhaust will flow like a 2.10" exhaust system.

If it were me. Id cut off that circa 2002 fart can and weld up a real muffler.

It's mandrel bent 2.25" all the way, I measured


Cliffs:
-Use OEM gaskets and clean them from finger prints
-The smallest point in the exhaust line will make the whole exhaust perform like that size
-Delete the fartcan for a real muffler that can reduce rasp and noise.
It only has rasp around 3k RPM with the silencer in, but goes away before 4K. I think its the air squeezing past the silencer.
 

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Discussion Starter #6 (Edited)




this is the restriction I was refering to.. theres no way to enlarge it
Oh okay gotcha. That's just the silencer, and I can enlarge it. I wanna cut that tube in it first and hear how it sounds, and if that doesn't make it better, enlarge the hole.

My theory is that the exhaust gasses are cooler towards the muffler so I actually don't need that big of a hole at the end if i want to keep or maintain a little back pressure / torque. I know I don't need back pressure, and I'm not looking for high rpm either, if I was, I would have gotten a 2.5" catback. Right now I know it drives better than stock, thats for sure.
 

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Discussion Starter #9 (Edited)
Is there a cat or is that straight pipe?
Cat I guess, its a little wider than 2.25" in the center, tapers back down to 2.25" on both ends.

ok.. lets see it with the silencer off
It's raining hard outside (flash flood warning in effect) but I will post up pics ASAP.

Does my theory make any sense? I wanna keep the noise down a little compared to no silencer, but still have a good balance between torque and hp.

I know my car drivers better, 2nd gear chirps last a hair longer lol.
 

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BATSLOMAN GIVES NO FUCKS.
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ok.. lets see it with the silencer off
I have the same exhaust under a different name (bbp) that tip is a 4inch tip, and removing the silencer will show how huge it is and hella raspy. also, REPLACE the header and down pipe gasket with something better than supplied (I used a diy sheet of exhaust gasket maker) and buy some lock nuts and slightly longer bolts. they tend to fail at that flange. and thread them all the way through both flanges. also, for the part that bolts to the test pipe, also use lock nuts/washers there as well. just had to tighten mine after 2yrs
 

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Discussion Starter #12
Heres the muffler pics.







Loos like it hangs lower in the pics, but it hasn't scraped on any big ass speed bumps.
 

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BATSLOMAN GIVES NO FUCKS.
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its just fucking huge and gawdy and doesn't let you use a rear lip lol. I plan on getting rid of mine one day and using 3inch oval piple from the turbo back
 

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I don't know about other people but I prefer tips to exit one inch after the bumper not before, personal preference though.

I also have to agree on the muffler, you don't even have to spend a lot. The junkyard is a great place to get them. I've seen maganaflows and even vibrants there. Usually just $20-40 which is only 10-20% of what they cost new.

I got a polished stainless steel dynomax for a camaro for $35. I always buy flowmasters just to resell them, they're not my cup of tea but some people love them.
 

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Discussion Starter #15
I like the tips a little behind the bumper, and this one came out perfect. I could raise it up a little more if i want. I used zip ties and not the hangers on it just to mount it up before i bolted it down, but I left it like that. Once I wrap my header next week I might use the hangers but for now i think its pretty much on point.
I did a 2nd gear chirp only hitting 5k today, usually i gotta red line lol.
 
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