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New cat back exhaust system or unsilenced B-Pipe?

Linus27

Linus27

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577
Currently have on my EP3 the OEM back box and a sportex unsilenced b-pipe. Would a cat back exhaust system, for example, DC Sports, HKS Hi Power, TODA etc be a better setup than what I currently have or not a lot of difference? If better, in what way, gains or just quality?

The car will have a K100 remap done as the last thing to be be done to it.

Thanks
 
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You get some good gains with catbacks but the bpipe is the most restrictive bit. If you're looking for more power why not go for a 4 2 1 manifold and es mounts and keep the rest what you have then get the k100 then you should get really good gains from that.
 
howie1987 said:
You get some good gains with catbacks but the bpipe is the most restrictive bit. If you're looking for more power why not go for a 4 2 1 manifold and es mounts and keep the rest what you have then get the k100 then you should get really good gains from that.
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Hey thanks. I'm not after massive gains so I was not going to go for a manifold. I was just wondering if a whole catback system would give more gains over basically my current unsilenced b-pipe. Budget is limited so happy to keep my current b-pipe but could afford a new catback system is this would be a better option.
 
It probably would be better with a catback but i don't see it making massive gains compared to what you have just now. If you're on a budget though you could get a japspeed manifold for probably less than some of the catbacks you mentioned. i got one for £220 and es mounts for £30 all new. it just down to what you want though lol.


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Yeah it does. i suppose its a bit of a pain if you don't know your mot guy lol.

Worth the gains for the money though specially if you're mapping it anyway.


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Linus27 said:
Thanks. Am I right in that changing the manifold means you have the cat removed?
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Not necessarily, Japspeed also do a 4 into 2 and a 4 into 1 manifold and then you could mount a downpipe and sports cat. It's the race manifold where you have to remove the cat. Look at their site: http://www.japspeed.co.uk/Honda-Civic-EP3-TypeR/c-21-5-1/

I've been considering this too and like you don't want a lot of noise so e-mailed them and they said they provide good gains and are not very loud when used with a standard exhaust system. How loud they would be with an aftermarket catback I don't know.
 
Theres allways that option aswell.

I have a 4 2 1 raceheader and a spoon bpipe with standard backbox and it really isn't loud and am fussy with it being too loud.


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That's what I'm planning on in time don't know if it any difference between the two. I think the race header and decat would give you optimal gains though. I'm interested in your set up as you say it's not loud.
 
I use to have piper catback with the manifold and it was too loud for me so thats why i went with spoon bpipe and and standard backbox also got aem cai and kpro and RBC and got 245.5bhp with that.


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That is a good gain can't wait to get the funds, I plan on changing the suspension first though so got some saving :lol:
 
Thanks guys. I don't want loud as I use mine for trackdays.

I see there are a lot of manifolds available, Buddy Club, DC Sports, Tegiwa, Japspeed etc. are they much of a muchness or are some better than others?
 
I think japspeed are the lower budget option but does a job and from what i hear they are good value for money.

Not sure on other ones but i know piper ones are lifetime guarantee etc.


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It's my understanding that the b-pipe is the most restrictive part of the exhaust, with the manifold second, the backbox isn't really a problem unless you're running forced induction. Personally, I'm aiming for a aftermarket manifold, b-pipe and sports cat, to keep it all legal and at a sensible volume. The standard backbox is a pretty effective silencer, and while I like the look of japcans, I don't think I could live with the volume of a mani, b-pipe and box combo. It's a trade off between large changes in volume, and small changes in power.
 
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