Dump Pipes

[JD-33]

Hey All,

I am tossing up between 2 dump pipes..

1) BOS IMPORTING

2) CES RACING

Who here has either of these and what was the power increase after install?

BOS IMPORTING one seems better value for money, but the CES one claims very good gains..

Opinions?

Cheers

-JD

PS: talking 33 gtst's

Edited May 8, 2006 by JD-33

[bluer33]

hey im after dump and front pipe my self, let us know how you go. thanks

[CATKICKER]

I am looking at getting one myself...

This is what I have at the moment, I am guessing it is stock?

[JD-33]

I am looking at getting one myself...

This is what I have at the moment, I am guessing it is stock?

yeah pretty much stock looking. mine is like that too..

Ive decided that im gonna go for the BOS IMPORTING one (only because of all the replies to it in this thread ) ... haha

-JD

Will let you know how it goes

[mr_rbman]

i made mine myself, pretty good option i think money wise and if you have access to a welder

[mad082]

are you wanting dump pipe, or dump and front pipe. if you want both i'd go with BOS. if you are just after the dump then go on ebay. they go for about $130 plus postage.

[paulr33]

the BATMBL or BOS Importing ones are tops, for the split dump to be useful the wastagate needs to be split apart for around 30cms. The cheap or less useful ones usually spit for about 5cms which is too short.

[Bunta]

The CES ones and the BOS ones are exaclty the same design, Go the BOS and save a few bucks

[mad082]

the one my mate has is just the split dump pipe and its split for about 10-15cm. i'm just going dump only as the car came with a 3" front pipe and i can't see the point in spending $400 when i can get away with $150. if i didn't have a 3" front pipe i'd get one of the BOS ones.

[Cillham]

having a split dump/front pipe in one is best as its split for >30 cm? Is there noticable spool difference to be seen?

[CATKICKER]

how about a screamer? even better again? Is it really too loud for street use?

[Craved]

screamers are illegal and can be bloody loud.

people dont seem to worry about screamer pipes as much as say no cat .. but the penalties are the same.

you shouldn't see any difference in spool times as this split system only really come into effect once the wastegate opens, therefore it is already at full boost.

noticed on my old setup that it would rev out much cleaner after the 5-5.5K rpm range ..

[CATKICKER]

so i am looking for a split dump with about 30cm seperation?

[Craved]

thats the consensus..

mine returned in at the bend that goes under the car..

[xxx_25L]

hey guys just wondering i just bought one of these split dump pipes but now i have gone for a high flowed turbo and has much more room behind the turbo in between the wastgate and the exaust . would it make a big difference if i dont have the little metal bit in between to seperate these two?

[CATKICKER]

what is the little metal bit you refer to?

[paulr33]

yes the little bit, or divider is half the point of a split dump. without the metal divider between the two they are still likely to cause excess backpressure.

imho a split dump without the divider is kinda pointless

[xxx_25L]

i ought the split dump pipe from just jap and was told that it was for the hks turbo so i took it off and it is lost but looking at the gap on the high flowed turbo, it has plenty of room for the metal to split the pipes does anyone know when i can get just the spliter part from?

[Craved]

you will want that bit of metal there.. extend the ones thats on it, or get a new one made.