batunbal
Member
Hi does taking cat out of front pipe really mate a difference to the bike if so is it for the better! Thanks
Decat front pipe
- Thread starter batunbal
- Start date
B
Buildercher
Guest
Yes it allows the exhaust to resonate, you will immediately notice more power all through the rev- range. Do you have an aftermaket pipe?, if not get one. Also a 16t in the front will lower the tall gearing, the bike will rev faster giving better acceleration and overall performance.
NJFZ1
Moderator
Removing catalytic in header pipe should be worth 2-3 HP, especially on the top end...
FZ1inTX
Adminstrator
Just be sure that any local inspection doesn't include emissions testing or it could get costly trying to get back to a CAT. 
mmmbeefy
Member
(decat is my favorite word of the day)
What's the scoop on the best way to get it done? Is there a cat-eliminator available? Or just jam a big honkin drill up in there like I did with my FZ6 exhaust can?
I'm throwing on my 2bros pipe this weekend hopefully, maybe I'll decat at the same time :sinister:
What's the scoop on the best way to get it done? Is there a cat-eliminator available? Or just jam a big honkin drill up in there like I did with my FZ6 exhaust can?
I'm throwing on my 2bros pipe this weekend hopefully, maybe I'll decat at the same time :sinister:
FZ1inTX
Adminstrator
You can drill it out but be careful not to hit the O2 sensor (or remove the sensor and then drill). I'd seen a video of it out there.... Here you go! Copperdog... CAT starts about 6 minutes into the video.
YouTube - buelle109's Channel
Rcslawncare
Well-Known Member
Does it increase your sound by gutting the cat? It is something I will be doing here soon. Thanks!
Dustin
Moderator
I would imagine so, you are removing a really huge restriction by gutting the cat. It certainly does on cars so I would think it will on bikes as well, maybe to a greater extent
B
Buildercher
Guest
It doesn't make it louder but a deeper rumble= very nice. Best way to get the thing out? mine fell out? put it down to the fact i had done a trackday the day before and gave the FZ1 a good workout= weird but true. Probably a 12" long spade bit or wood turning chissle would be my guess. I won't take much to remove but wear a mask and after you have removed it take the bike outside before starting as all the bits will come firing out= always health & safety 1st.
Drinky
Well-Known Member
to bad you can't just remove it and put it back if needed. We don't have regular checks for bikes here, *yet* you never know.. but a new cat, and since its stuck, new headers are pricy.
S
stormsmack
Guest
if I decat, wats this gonna do to the exup valve?
T
TKO
Guest
Nothing, the EXUP valve is downstream of the cat.
NJFZ1
Moderator
That is correct...wont affect the EXUP. That being said I'm not sure that it's really worth it to remove the front cat while keeping the stock muffler...
S
stormsmack
Guest
i just finished gutting the cat, and i rode around the block but couldnt tell much difference but i need to get it out on the road to use the butt dyno. lol. it does have a lil better sound tho.
NJFZ1
Moderator
magpiemale
Well-Known Member
Is this the only cat on the bike just down from the exhaust or is there another in the downpipes ? I have already done the big cat removel.
NJFZ1
Moderator
FZ1 has two cats, one in the muffler and the other in the collector of the header pipe.
magpiemale
Well-Known Member
muffler ? pardon my lamness but what's that.
NJFZ1
Moderator
Oh what do you chaps call it over there on that side of the pond? Silencer? End can?
magpiemale
Well-Known Member
ooh ok lost in translation lol my wife is from new jersey should off asked her hahaha,well it does not concern me njfz1 as I ripped it off and put a scorpion on and took the cat out further down the pipe.What confused me was that people seem to suggest there was a cat in the downpipes from the engine (which I call the downpipes) So if there is only the two one in the muffler (exhaust) and one near the oxygen sensor,then I am all done.