Changing Extractor

[azir]

Sufi's there, if i change my stock extractor to 4-2-1 without changing the piping n cat conv, there will be any improvement or prob? mine was proton 1.6.

 

[LAWRENCE_Q]

i oso got same idea, but mine is 1.3 iswara, currently mine is stock exhaust!

 

[SkYwAlKeR]

should be there are some improvement.. coz last time when i changed my extractor, iswara OEM extractor has vr little room for the exhaust gas to sqeeze from 4 pipe to 1 pipe... (OEM iswara extractor also 4-2-1.. but much much shorter and heavier)...
by changing ur extractor, exhaust gas can slowly travel from 4 pipes to 2 pipes coz of the distance... this will increase ur car performance as there isnt much pressure to force the gas out ma...

of coz changing ur piping to larger ones will help but if u decide to stick to ori one also can la... still can feel the improvement... give it a try...

 

[Carrera]

Another iswara driver here, think of wanna change CAT first then only change the extractor. Skywalker, is there a lot of improvement after u change the extractor and cat in ur car? Just wanna know the performance.

 

[gloss]

if u change the extractor, change the CAT also. the CAT is blocking the air flow, once u change, there is 3-5psi increase in power. u can feel the different, more torque more responsive. 1.6 use 2" - 2.5" ineer piping.

 

[verticalimit]

Sufi's there, if i change my stock extractor to 4-2-1 without changing the piping n cat conv, there will be any improvement or prob? mine was proton 1.6.

use stock extractor then add longer diameter. i heard most them say the power quite impressive.

 

[SkYwAlKeR]

Another iswara driver here, think of wanna change CAT first then only change the extractor. Skywalker, is there a lot of improvement after u change the extractor and cat in ur car? Just wanna know the performance.

which part is the CAT??... basically for my car, my whole exhaust piping, from extractor to muffler tukar adi wo...
i remember when bought my capalang brand extractor (worth rm150 saja), he gave me a sarong besi too... something like a flexible joint connect extractor to ur piping... after that, i change mid bullet, those like tornado shape... he said more powerful and reduce FC wor... after that is the S-flow piping (below 2inch ar, not sure)... then a capalang small muffler (those usually found in kancil)...

performance wise, not much increase in hp... but got smooth rpm climb lo... coz last time before change kinda like choke a little... now much smooth adi... FC??... sad case... around 9.5km/litre... (jz now pump petrol, my car only recorded 9km/litre - should be air filter dirty adi)... :thumpdown

 

[sam1741]

i also got this plan...
just change the extractor, remove the cat

but piping use back.. muffler use back... :)

 

[SkYwAlKeR]

may i know what is CAT??... can post up picture of it ar???

 

[Carrera]

Just change my stock extractor to 4-1, got some improvement but donno wheteher change to this 4-1 is an ideal choice or not. Or 4-2-1 is better? Plan to change my CAT to Bullet next...and Muffler.

 

[gavan]

errr, cat is also known as cathalic converter. normally found in EFI cars as they want to meet the dunno what standards larr. looks inside the cat is like honeycomb wan, dunno whats the material, some is like besi type, some is like ceramic, so im not sure bout whats inside but it sure ristricts alot of air-flow. but it also keeps the enviroment clean ;) so erm, by removing it, means more air-flow and also more power lorr :D

btw, 4-1 extractors are for high revving engines like VTEC's and also normal engine which alwiz wanted high revving performance. for ideal daily driving, 4-2-1 extractors are recommended ;)

two cents niaa.....

 

[Carrera]

Hmm..means i change to 4-1 is wrong liao? u said normal engine is it stock? Coz mine is iswara aeroback stock engine not vtec. So, Need to change to 4-2-1?:frown:

 

[SkYwAlKeR]

Hmm..means i change to 4-1 is wrong liao? u said normal engine is it stock? Coz mine is iswara aeroback stock engine not vtec. So, Need to change to 4-2-1?:frown:

u still can use back the 4-1 extractor... but 4-1 is more for pickup lo... if u alwiz travel long journey at high speed, better change back 4-2-1... coz at high speed (lower rev), ur car seem no power... with 4-2-1, at top gear u still have torque to go faster...

 

[ccwwai]

4-1 for NA

u still can use back the 4-1 extractor... but 4-1 is more for pickup lo... if u alwiz travel long journey at high speed, better change back 4-2-1... coz at high speed (lower rev), ur car seem no power... with 4-2-1, at top gear u still have torque to go faster...

ya~ better keep 4-1, if use 4-2-1 at NA car (except high rev car, like vtec and etc) its rili sucks~ no torque at all~~

 

[badguy]

wah lau eh!
so ppl say this some ppl say that!!

 

[sam1741]

wah.. really confusing...
some said

..if use 4-2-1 at NA car (except high rev car, like vtec and etc) its rili sucks~ no torque at all

some said

4-1 extractors are for high revving engines ..

 

[SkYwAlKeR]

haha.. i think he mean 4-1 extractor at NA car sucks...
4-1 is for pickup, as i said ma.. coz when pickup u usually rev quite high... thats why 4-1 is good lo for pickup lo...

4-2-1 is for normal road use (high and low rev/speed)...

 

[sam1741]

har.. i more more confused... :(

pickup? i thought pickup is regarding torque at low end rpm?

then
"4-2-1 is for normal road use (high and low rev/speed)"
so for high and low rpm also can.. why not everyone use 4-2-1???


btw.. i saw iswara stock is cast iron 4-2-1 one
my car 120y stock is cast iron 4-1 (with '4' section veli short)

 

[Merv86]

haha.. i think he mean 4-1 extractor at NA car sucks...
4-1 is for pickup, as i said ma.. coz when pickup u usually rev quite high... thats why 4-1 is good lo for pickup lo...

4-2-1 is for normal road use (high and low rev/speed)...

What Skywalker is trying to say is 4-2-1 is more better for NA cars
where as for 4-1 setting it suites more powerful engine like Vtec...
correct me if im wrong..

 

[SkYwAlKeR]

yah yah... that definition for normal driving lo...
if u alwiz like to rev high high (even not vtec) use 4-1 extractor lo...
use any one also no problem... jz a little bit of difference in performance wise...