4-2-1 Extractor

[Lancer78jas]

Can changing of extractor to 4-2-1 really improve in preformance?

 

I can't feel at all. Furthermore, rpm when reach certain level, it actually can't go up further....

 

Anybody faced this problem?

[Luckcent]

Can changing of extractor to 4-2-1 really improve in preformance?

 

I can't feel at all. Furthermore, rpm when reach certain level, it actually can't go up further....

 

Anybody faced this problem? Thumbs Down

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no point modding....just change to a more powerful ride.

[Lancer78jas]

Got $ will get better ride..

 

No $ will ride to get better...

[Thug]

One thing pple haf to understand the extractor.

Extractor is for exhuast to flow thru.

 

Changing an aftermarket extractor only help the exhuast fumes to flow thru more smoothly.

Of coz with the existing cat as ur 2nd resistance, flow could be restricted once again.

4-2-1 improves power gain on whole range of rpm.

 

Best to bring out the potential of 4-2-1 extractor should be changing the whole exhuast system.

 

Ur ride auto or manual?

[Lancer78jas]

Manual....... Meaning I have to decat and change to a bigger dwn pipe?

[Thug]

Wad ride?

Lancer?

[Lancer78jas]

Yupz

[Thug]

I won't ask u to de-cat as its illegal. But if u wan u can always do it.

 

However Lancer set-up should be 2" mid pipe. Muffler any legal one wif cert will do...or operated also can...

[Clazio71]

4-2-1 extractor helps to improve your pickup but it is just part of the entire exhaust system that is why you dun feel the maximum effects from your modifications. Your cat converter is the reason for your RPM unable to go up further... So is your stock exhaust muffler. There are many other factors such as air intake system, diameter of piping, ECU etc.

[Thug]

Forgot to say something...

 

When changing extractor, best to bore the engine exhuast fume outlet to the size of the manifold inlet. Bore both sides for ultimate smoother flow...

[Thug]

Hi Clazio...we meet again in extractor thread...

[Clazio71]

haha yes... its nice to see you online again...

[Xtremez]

Wondering if changing to 4-2-1 extractor is legal? changing muffler issit universal for all cars or depends on model? my ride is Civi ESI thinking of doing some exhaust mods but afraid cannot pass inspection... any one can advice

[Circuit]

hmmm

 

my case a bit diff..

 

mine auto car focus

 

stock exhaust setup ... with supersprint muffler end.

-- no loss in low end, jus mid and hight better, with the sound.

 

but i was thinkin if doing a 4-2-1 extractor, will it improve pickup?

hear rumour before, if i change 4-2-1 and aftermarket muffler.. dun de-cat.

or low end suffer.

 

so should i go ahead with the 4-2-1 ... and leave the cat untouch?

-- to get a better pickup? or decat? ..

 

my ecu is untouch... so no know whats the best next plan

 

any experience exhaustees?

[Watwheels]

http://www.onemotoring.com.sg/publish/onem...ml#MainPar_0006

 

See under "Exhaust system". Exhaust manifold aka Extractor.

 

Unless certified by LTA if not it'll be illegal.

[Zealot]

I tried the 4-2-1 extractor before on a Altis then had a run against my good friend's lancer.

Here is what i experienced...

 

1. Stock 14" rims , against lancer i win

2. Upgraded to 16" rims , against lancer i lose

3. Change to 4-2-1 extractor , against lancer i win.

 

the change of the extractor allows me to no 3.

you say got improvement or not?

[Xtremez]

i see, looks like have to make a trip down to FK or Jeepchee to check it out

[Clazio71]

4-2-1 extractor and modified cat converter will boost your low end power for better pickup but bear in mind that such modifications are not LTA-compliant. ECU tuning will definitely optimize the performance of your vehicle but should only be done after your exhaust system is ready for ECU mapping...