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 Basic Intake and Exhaust Modification Guide, for normal aspirated cars v1.0

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icyd
post Nov 14 2006, 08:37 PM

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hi forummers,

can i ask for advise also?my car is iswara a/b manual 4g13p.seems like more reading leads me to more confusion.already running on cap ayam 4-2-1.dont quite feel the difference.my concern is pickup power so i can use higher gear at low speed,also to ease hill climbing.whats the best exhaust setup for my car?is it possible to have lower fc with certain setup?same fc is ok but let the new setup not increase my fc.
icyd
post Nov 15 2006, 06:18 PM

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everything stock standard except for the cap ayam extractor
icyd
post Nov 27 2006, 12:03 PM

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QUOTE(kweng84 @ Nov 27 2006, 10:15 AM)
icyd: what is ur budget? and how much you pay for a whole system of WISE include installation? if 2nd hand, how long it has been used? Well, if WiSE whole system fits nicely to you iswara and it is cheaper than 400 bucks, i say go ahead. However, as far as i know, the ori piping route of WiSE is different from iswara piping route but the extractor should fit nicely. Need to check it out. Let me know k?
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me? i dont have WISE exhaust

icyd
post Dec 4 2006, 06:12 PM

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any specific brand extractor or my cap ayam one will do just fine?thanks for the info btw.err..what is 1.7" semi piping?is it 1.7" halfway front to back?

This post has been edited by icyd: Dec 4 2006, 06:15 PM
icyd
post Dec 4 2006, 09:00 PM

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yeah..i prefer sflow to straight flow.kweng84,can your shop do mandrel bend?how much roughly to change zenden 421, 1.6" all the way,spiral bullet and sflow muffler?can accept trade-in or not?many LMST owners looking for ori iswara muffler nowadays tongue.gif
icyd
post Dec 5 2006, 04:23 PM

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understood.thanks
icyd
post Dec 5 2006, 04:24 PM

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whats the shop address bro?will go there when got time
icyd
post Feb 26 2007, 09:24 PM

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to sifu's here..after more reading,i found myself to be more confused abt this exhaust mod thing.but the idea i have in mind is restrictive=more torque,less top speed, free flow=more top speed,less torque.is this correct?can we use this as general rule of thumb? so,does it mean removing cat con is reduce restriction thus only increase power in high rpm?

im getting even more confused when some shop i asked,if want pickup,reduce restriction,go for straight flow muffler.
icyd
post Feb 26 2007, 10:23 PM

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oic..good xplanation there.so what happen when the pipe too small?there'll be even more torque then,like the case of bus exhaust.so whenever theres increment of pipe diameter,some amount of torque will disappear,or shifted to higher rpm,straight flow or s-flow doesnt matter.correct me if im wrong
icyd
post Feb 27 2007, 11:38 AM

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very useful.thanks
icyd
post Mar 1 2007, 09:15 PM

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anyone can give me direction to exss work setapak?i wan to do my exhaust there
icyd
post Aug 25 2008, 04:57 PM

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QUOTE(nixZorus @ Aug 25 2008, 04:52 PM)
Do exhaust system of 3-2-1 exist? I was wondering if they do exist.
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for kancil/kelisa
icyd
post Feb 28 2009, 07:10 PM

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one shop at ampang they prove that their stuff are stainless steel by using magnet.if it sticks,then it's fake stainless steel.and it doesn't stick when tested on their product.

what's the effect of using pressure generating mid box?more power or loose power?the pipe inside not completely hollow but got some gigi arranged in swirling position.just asking coz mine using this type of midbox
icyd
post Feb 28 2009, 11:01 PM

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QUOTE(saihoe @ Feb 28 2009, 10:35 PM)
roughly how much for a K&N drop in filter for wira injection?
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around 200++
icyd
post Sep 9 2009, 06:51 PM

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macam pisang?
icyd
post Sep 26 2009, 12:28 PM

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how bout hotbits extractor?
icyd
post May 24 2011, 04:31 PM

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does it help acceleration if i use twin exit setup, like old satria gti type, for say a v6 engine?
icyd
post May 24 2011, 05:40 PM

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QUOTE(Peekab0o @ May 24 2011, 05:24 PM)
Usually from what i see those twin exit setup is only 1 exit . Another 1 is for dummy looks i mean for cosmetic purposes .

About acceleration i think just maintain your stock piping size . Get a nice Extractor probably a mandrel bent one which are usually made of stainless steel . Nice mid-bullet and a good muffler .

S-flow / Straight flow .  It will depend yours auto / manual .
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hard to get an aftermarket extractor for a v6. i'm going for straight flow but contemplating on what size piping to go for to increase torque of my 2 ltr engine. i actually still running on stock piping size before converting to 2 ltr from 1.6

This post has been edited by icyd: May 24 2011, 06:19 PM
icyd
post Nov 26 2011, 01:00 PM

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anybody can predict the outcome of this mod in terms of power, torque, FC and noise?

Current setup;
2" crush bent pipe throughout > oval midbox > med length s-flow

observed effect with this setup;
torque feels flat and out of breath around 2k-3k rpm range. top speed so-so (have a feeling it could do better). FC acceptable but been increasing of late, probably not related to exhaust. peppy exhaust note

proposed setup;
2" mandrel bent piping > oval midbox > 1.8" mandrel bent piping > big oval straight flow muffler

Predicted effects using this setup?

engine spec;
2.0 V6, manual, KnN Drop in.

thanks in advance

This post has been edited by icyd: Nov 26 2011, 01:06 PM
icyd
post Nov 26 2011, 05:17 PM

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QUOTE(tictac @ Nov 26 2011, 04:28 PM)
Icyd.. just add another oval midbox.. it will give you wonder. wink.gif
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there's no more space. is it in theory, adding backpressure?

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