Dump Pipe

[Kaido_RR]

Hey All

1st: I am a noob

2nd: I did use the Search function i didn't come up with much

ok now that is out of the way, i am looking 2 install a dump-pipe of my car at the moment it was front pipe, HKS super drager exhuast 3.5inch' with stock dump.

Could someone give me an idea of a good dump pipe (single or twin), im not going 2 buy a namebrade one as it is 2 much just going 2 get an exhuast shop 2 make me one (was quote $300 for USED HKS and $600 NEW HKS also)

Thanks Mike :headspin:

[Sydneykid]

Try www.japanesemotorsport.com.au

They sell new split dumps for around $400.

[Kaido_RR]

umm wat is the different from split and singel dump pipe?

[Abo Bob]

Allow me.

I did a few searches and the info is there, you just need to look harder. I would call them split dumps but a lot of people call them twin dumps. There's your first point of confusion.

Your exhaust comes out of your turbo and also out of your waste gate. These exit points are a couple of cm from each other and if you have a single pipe dump they are combined right there at that point.

If you use a split you have one pipe for each which join together about 20-40 cms down.

The difference is that with a single pipe, when your waste gate opens, meaning that both exits are being used, there is turbulence created in the pipe thus slowing it down. You want smooth flow.

With a split, they join further down which creates much less turbulence and a smoother flow. the smoother the flow the faster the exhaust gases can escape, hence more power as the engine is less restricted.

How am I doing guys?

[Guest Robo's]

Sounds correct. With the V8's they use X-pipes and balance pipes further down the system to smooth out pulputations or to enhance flow.

Now that i think of it, a split dump would be great. How much extra power are they getting over a single 3 inch dump??

[lukits01]

hey has anyone dynoed their car before and after putting on a bigger dump pipe?

how much difference in power are we looking at here?

I allready have a 3" front pipe followed by a high flow and a 3" cat back

was wondering if its worth the money to actually install a dump

[xRHETTx]

A 3" split dump will be my next mod, but im weighing up between atmo exhausting screamer pipe and getting a normal plumbed one.

I know the screamer pipes are illegal, but how loud are they really? Do they leak when off boost at all?

[Cake]

i just bought a used stainless split screamer (atmo venting) dump, has seperating partition between the wastegate and exhaust outlets. wastegate pipe is 1.5" and exhaust pipe is 2.5", is that how big it should be??

i havent had it fitted yet, will soon. stock dump is only 2.5" also but that has wastegate gas merged into it.

[Steve]

Arrow diffs do a nice split dump in stainless. If you can get a HKS one second hand for $300, its pretty good value if its in good nick. Second hand is fine if the condition is ok, and can save you a heap of money.

[rob77]

hey has anyone dynoed their car before and after putting on a bigger dump pipe?

how much difference in power are we looking at here?

I allready have a 3" front pipe followed by a high flow and a 3" cat back

was wondering if its worth the money to actually install a dump

I did. I found a peak output of 10hp more as well as a midrange improvement and the stock turbo spooled from 2500rpm instead of 3500rpm... worth doing if you plan on keeping the stock turbo. I was until I came across the td06 at a reasonable price