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HKS S/S DUMP PIPE worth the $$$?

abcent

By abcent,
in Engines & Forced Induction

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abcent Mentor

abcent

Posted
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Im upgrading the turbo next week on my R33 and was considering whilst i had the tubro out I may as well fit a better dump pipe and front pipe (to complement my cat back zaust). I picked up a s/s Blitz front pipe from Autobarn for $329...bargan i thought, and am considering buying a HKS dump pipe second hand......

But I have heard mixed opinions on wheather there worth there money or not for there gains. I've rang around variour tuners and imports dealers.....some say there great, improving flow & throttle response. Other say they do very little and that my money would be better spent on some other aspect of the car (non specific, just saying there not worth the $350).

so I put the question to the skylines Australia Forum readers......

are they worth the $$$?

what gains have others felt when installing one?

anyone had a dyno before an after having one fitted?

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https://www.sau.com.au/forums/topic/39048-hks-ss-dump-pipe-worth-the/
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Steve Grand Master

Steve

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Try dropping SLY33 a pm, he fitted one to his car, as his turbo was choking top end, he thought it was a good thing.

Ask yourself what impact turbulance in the dump pipe makes? would it increase back pressure or reduce it? Or would it make no difference? Also, does yours have the seperator block between the turbine outlet and dump? If so, what effect would that have?

Basic fact of turboed cars (in fact all cars) is that reduced back pressure will mean better flow, better flow will mean faster exhaust gasses, faster exhaust gasses will mean better cylinder scavenging and quicker spooling turbo.

I am not saying that Trust, HKS or any other brand make the perfect dump, but really, have a look at the brick wall the stock dump presents for the wastegate, it wouldnt be very hard to improve on.

And another thing with Jap second hand parts 99 chances out of 100, if you buy something second hand, its going to retain most of its value if you fit it and decide its no good.

If you have a stock turbo, IMHO the most gains you will receive are from the front pipe, but upgrade the turbo and its a different story.

redline2003 Community Regular

redline2003

Posted
Posted

does the HKS dump pipe hav a split pipe running the wastegate seperately? if so how far down the dump does it rejoin before the CAT, because i was under the impression that CES made the best split dump pipe for internal wastegate turbos due to the wastegate screamer having decent travel distance before it rejoins

abcent Mentor

abcent

Posted
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Posted

The CES one is a full dump+front pipe in one, Since I alreadny bought a good front pipe it would be a bit of a waste of money to buy another one. I looks pretty good though, had i known of it sooner it would have been something to consider.

does anyone know if the HKS dump pipe has a split pipe running the wastegate seperately?

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