Extractor - how effective

[Vtim]

yar! better have more guinea pigs doing the experiment first

[S2P2]

[Mel4fun]

Vtim,

 

I can only consider 4-2-1, there are some specifically designed for my engine

 

Juz want to check out with other Bro before going any further.......

 

Last I heard, Dr Mike had done his on his 156......wonder did he remove his rear box.

[Vtim]

looks like I have to pay Mr Loo of Speedworks a visit liao

[S2P2]

he got do pipe meh???

[Vtim]

make sure you get one that's make for your car, else it'll defeat the purpose don't think you'll be able to find one for your ride in J.B.

 

I think Dr Mike did replace the rear box

[Vtim]

he sells but don't do installation

[Mel4fun]

too little $$$$ but too many hobbies

 

I was toying with the idea of whether to get the extractor first or the rear box, b'cos both also very the $$$$.

 

My objective is - improve low-end grunt for city driving

 

What do you think?

[Mel4fun]

What are the brands that Mr Loo is selling?

 

Last time when I was at his place, he had alot of Alfa goodies.....

 

Any chance he had something for the VAG engine ?

[Vtim]

[Vtim]

if that's the case, go for the extractor first

[Vtim]

should be hotbits here's the Malaysia website

 

http://www.speedworks.com.my/main.html

[Wrxblue]

Bro Mel,

 

it is difficult to answer your question, as exhaust tuning got to do with controlling of the exhaust gas flow ie: energy generated by the flow. Normally the extractor can be 'tuned' with length and diameter of the pipes and it can be done by trial and error using a dyno or be done on a engine/exhaust computer simulation software.

 

But for easy understanding,there are 2 basic designs of extractors in the market.

 

On a 4 cylinder engine there are basically 2 types of headers: 4-2-1 and 4-1.

 

The 4-2-1 setup features 4 individual pipes leading from the engine which go to 2 pipes and finally 1 pipe leading to the catalytic converter. This setup is designed to improve low end torque. see pic 2

 

The 4-1 design features 4 pipes which go straight into 1 pipe going to the cat. This improves mid to high end power. see pic 1

 

When buying a header, remember to look for one with short pipes of a large diameter. Long pipes of a short diameter give better fuel economy and a bit easier drivability.

Edited April 6, 2003 by Wrxblue

[Saaber]

If possible, try to get the full set of exhaust system designed for the car...

[Mel4fun]

Thanks Terence, you know what's on my mind har....

 

Where have you been?? Hoping to see you to give more advise

 

Toying with the idea of Supersprint extractor, it's a 4-2-1 system.

 

Not sure about the 'potential gain' vs $$$$, so asking around to gather some more information.

 

Don't want to swear by the product to say it's good juz because we had spend $$$ on it, hope to hear some objective views first

 

So how........for a stock unit, is it worth the $$$ and trouble ???

 

Which one should go first? Extractor or rear box ???

[Mel4fun]

...... now where's the $$$$ printing machine.....maybe if I can get it working, can print a few more to satisfy my 'wants'

 

Bro.....full system very $$$$$, must 1 step at a time.....mun mun lai

[Wrxblue]

Hi Mel,

 

have been busy with work...and abit sick..so dare not go to crowded places and meet ppl hehee....

 

well, For a proper exhaust system, a full exhaust system would be a good way to go...at least it is 'properly' tuned by the manufacturer. Coz matching of all the exhaust components might not be a easy thing to do

 

Last time in the UNI, we used to toy around modifying exhaust system, adjusting diameters, length of pipes and difference joints etc to increase HP with a computer simulation software, real fun!!!

 

probably you would like to do a before and after dyno test to justify the power increase and the $$$ spent.

 

but then for a NA car, dont expect a huge jump in HP....probably better drivability would be a more expected return...

[Pathfinders]

Not sure of the brand of sun films you trying out. Below's the address of v-kool for M'sia.

 

V-Kool (M) Sdn Bhd

30 Jalan Sulam, Taman Sentosa

80150 Johor Bahru, Johor

Tel: 07-3317154