Extractor mod... Mod or not mod??

[Sei_fei_loh]

Hi all..

 

went to JB today and understand its cheap to change the extractor.

 

the guy says it better to use a 4-1 extractor. but it seems most of u are using 4-2-1. which is better?

 

by changing the extractor, is there a significant increase in noise? he said after changing the extractor, still can pass inspection. hw true?

 

thanks

[Tigger]

extractor not noisy wan

noise always come from (muffler)

[Sei_fei_loh]

wats the gain for modding the muffler?

[Fuzzylogic]

From what I've read 4-2-1 extractors will give betta low end torque and 4-1 gives more high end power. Think most cars wud come stock with a 4-1 exhaust manifold. The stock ones are usually optimised for economy as well while after market ones are usually tuned for more power. The length and bore of the extractor has to match the power characteristics of your car else you might end up losing power in the end.

 

After mkt mufflers usually provide better flow for the exhaust gases. On the downside, they are usually noisier due to the better flow. LTA approved mufflers cost many times more than non-approved ones.

[Sei_fei_loh]

i was if i change my extractor, there will be a metal rattling kind of sound during high rev. hw true?

[Fuzzylogic]

It's more of a slight hissing noise rather than a rattling sound. If there's a rattling sound, the installation was most probably not done correctly.

 

The hissing noise is due to the fact that the after market extractor has thinner side walls for the piping than the stock exhaust manifold. The high velocity at which the exhaust gases travel hit the walls on exit from the combustion chamber causing the noise.

 

I'm not too sure if those 'branded' after mkt extractors made of stainless steel has the same issue but they usually manufacture for high performance NA or Turbo cars only.

[Sei_fei_loh]

oohh icic...

i nv hear that kind of sound b4..

 

was told its some kind of metal sound..

 

haiz.. don't know shld mod or not leh..

[Dennisk]

just do it....

[Sei_fei_loh]

haha..

 

bad bad...

 

my frend did the whole thing from the extractor to the muffler..

 

i wan to haf some gains on my low end. but dunno which part to do

[Jamesgetz]

if u usually drive in the low-mid end range and wants improvement in this region, go for 4-2-1 extractors with high-flow cat.

 

4-1 is definitely for high end gains. high-flow cat will still remove the toxic stuff from the exhaust gases and more importantly, preserve some back pressure for good low-mid end

[Robin]

323 got 4-2-1 meh?

 

is that u?? so humsup...

[Robin]

Man exhAUst got website? cant seem to find it. i know fong kim's got one...

[Satriagti]

From what I've read 4-2-1 extractors will give betta low end torque and 4-1 gives more high end power. Think most cars wud come stock with a 4-1 exhaust manifold. The stock ones are usually optimised for economy as well while after market ones are usually tuned for more power. The length and bore of the extractor has to match the power characteristics of your car else you might end up losing power in the end.

 

After mkt mufflers usually provide better flow for the exhaust gases. On the downside, they are usually noisier due to the better flow. LTA approved mufflers cost many times more than non-approved ones.

 

hi there.. do u haf any idea how much it'l cost to do a 4-2-1 extractor in jb? I juz checked w foongkim that it'l be ard S$400++ .. wonder if it's cheaper over there?

 

yAs

[Caterpillar]

Hello bro,

 

I get a set of 4-2-1 extractor, a high flow cataylic convertor, drop in K&N filter, a cylone 2 60mm od. SMS me if you are interested. 90101598.

[Kanr]

wats the cost?

[Caterpillar]

Hi Bro,

 

Extractor: $75

Highflow cat: $60

K&N:$45

Cyclone: $50

Strut bar: $20

 

Let me know...

[Ferdows]

May I know what does the extractor serve for a purpose actually?

[Gary84]

bro...Man Exhaust doesnt haf a webbie. If u wan, here's their contact:64587053. If u are looking at extractor, they costs u abt $180. however if u have uncommon ride like my primera, they can custom-make one for u for $280.