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

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rafiq1811
post Sep 20 2010, 09:38 PM

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hey you guys smile.gif
been reading alot about how to increase low end torque for my 2008 iafm gen2 1.6//

i recently brought my car to speedwork in pj. had the whole setup change to hotbits - full exhaust system change there. change the air intake as well for the open pot k&n. well definately lot of changes in the high end power but i loose alot on the lower end. i lost my low end power.

so any sifu can tell me what should i do to gain back my low end power or gain more lower end power?

as you know the whole hotbots setup exhaust has no back end box, its a straight end flow from the center. should i install s-flow muffler?

or what should i do?

Added on September 20, 2010, 9:46 pmowhhh i even wrap the whole exhaust system smile.gif

This post has been edited by rafiq1811: Sep 20 2010, 09:46 PM
ryan66
post Sep 21 2010, 01:31 AM

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newbie here

errr

if i chge muffler only

will make any diff for my fc?

drivin kenari here
the_catacombs
post Sep 21 2010, 04:13 AM

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QUOTE(ryan66 @ Sep 21 2010, 01:31 AM)
newbie here

errr

if i chge muffler only

will make any diff for my fc?

drivin kenari here
*
minor difference
MjMax15
post Sep 21 2010, 09:18 AM

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QUOTE(the_catacombs @ Sep 20 2010, 12:09 PM)
small explosion sound could be due to carburetor tuning and worn sparkplugs...
swirl offer more back pressure compare to normal bullet...

4-1-1 is what??.. extractor??... 4-1 extractor not suitable for auto transmission car...
*
but the shop said this suit for auto as well. i told them i want power to pickup because my engine sluggish at low torque.
im driving a lot in town also. doh.gif
since i thought they knowledge better than me..so i use this setting.

the power i can feel better than stock but im wondered if 4-2-1 is more better
how can i explain to this shop?
maddriver
post Sep 21 2010, 09:57 AM

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QUOTE(rafiq1811 @ Sep 21 2010, 12:38 AM)
hey you guys smile.gif
been reading alot about how to increase low end torque for my 2008 iafm gen2 1.6//

i recently brought my car to speedwork in pj. had the whole setup change to hotbits - full exhaust system change there. change the air intake as well for the open pot k&n. well definately lot of changes in the high end power but  i loose alot on the lower end. i lost my low end power.

so any sifu can tell me what should i do to gain back my low end power or gain more lower end power?

as you know the whole hotbots setup exhaust has no back end box, its a straight end flow from the center. should i install s-flow muffler?

or what should i do?

Added on September 20, 2010, 9:46 pmowhhh i even wrap the whole exhaust system smile.gif
*


In the first place, just use a lightened crank pulley will do....... Sure to improve low end performance......
the_catacombs
post Sep 21 2010, 01:04 PM

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QUOTE(MjMax15 @ Sep 21 2010, 09:18 AM)
but the shop said this suit for auto as well. i told them i want power to pickup because my engine sluggish at low torque.
im driving a lot in town also.  doh.gif
since i thought they knowledge better than me..so i use this setting.

the power i can feel better than stock but im wondered if 4-2-1 is more better
how can i explain to this shop?
*
jz tell them u wanna try use 4-2-1 setting
MjMax15
post Sep 21 2010, 05:38 PM

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LOL..ok then.
tq bro
Mayor
post Sep 22 2010, 01:51 PM

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anyone knows a reliable local company that makes 4-2-1 extractor & exhaust system?
the_catacombs
post Sep 22 2010, 03:39 PM

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QUOTE(Mayor @ Sep 22 2010, 01:51 PM)
anyone knows a reliable local company that makes 4-2-1 extractor & exhaust system?
*
hotbits
mfa_145
post Sep 22 2010, 11:50 PM

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QUOTE(Mayor @ Sep 22 2010, 01:51 PM)
anyone knows a reliable local company that makes 4-2-1 extractor & exhaust system?
*
'ROJAK' exhaust system is more powerful provided that with a good exhaust setup.

Added on September 22, 2010, 11:52 pm
QUOTE(rafiq1811 @ Sep 20 2010, 09:38 PM)
hey you guys smile.gif
been reading alot about how to increase low end torque for my 2008 iafm gen2 1.6//

i recently brought my car to speedwork in pj. had the whole setup change to hotbits - full exhaust system change there. change the air intake as well for the open pot k&n. well definately lot of changes in the high end power but  i loose alot on the lower end. i lost my low end power.

so any sifu can tell me what should i do to gain back my low end power or gain more lower end power?

as you know the whole hotbots setup exhaust has no back end box, its a straight end flow from the center. should i install s-flow muffler?

or what should i do?

Added on September 20, 2010, 9:46 pmowhhh i even wrap the whole exhaust system smile.gif
*
no need to install muffler bcoz hotbits exhaust system places muffler in the middle.
u want more low-end torque, u shud try 'ROJAK' exhaust system.
rm1xxx exhaust system cannot guarantee satisfaction.

This post has been edited by mfa_145: Sep 22 2010, 11:52 PM
Shawnzz
post Oct 20 2010, 08:51 PM

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guys, any muffler to recommend? currently i am driving a proton iswara 12v using a straight flow muffler that i just installed 2 weeks ago. Previously i was using a s-flow but all the fiber is gone, so i changed to straight flow for much more power.. but i realize that my iswara have poor sound insulation..

Any other muffler to recommend me which is quieter and much more power as the stock muffler. It would be best if the muffler is as quiet as the stock muffler..
TSsoulfly
post Nov 2 2010, 03:00 PM

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try look for hks silent hi-power, or even the non-silent version should do just fine.

that if you get the original version of course.

p/s: can't believe this topic is still around...heheh.
szeeonn
post Nov 2 2010, 10:54 PM

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hi soulfly,
if you can postup with TURBO Exhaust piping setup, would be much appreciated lol ^^
Davird
post Nov 12 2010, 02:34 AM

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anyone heard about "next design" mufflers?
I was told that they are japan aftermarkets and produce great quality/performance.

Can the sifu's confirm this?
is the price rm400 for a second hand worth it?
the_catacombs
post Nov 12 2010, 10:06 AM

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QUOTE(szeeonn @ Nov 2 2010, 10:54 PM)
hi soulfly,
if you can postup with TURBO Exhaust piping setup, would be much appreciated lol ^^
*
exhaust piping setup is very dependent on engine setup... exhaust piping is not universal....
hence, pls list down ur engine spec...

QUOTE(Davird @ Nov 12 2010, 02:34 AM)
anyone heard about "next design" mufflers?
I was told that they are japan aftermarkets and produce great quality/performance.

Can the sifu's confirm this?
is the price rm400 for a second hand worth it?
*
nope... never heard of it...
yikloong88
post Nov 12 2010, 05:54 PM

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mayb sifus can help me in modding myvi 1.3 auto?

4-2-1? or 4-1?

open pod? drop in? air filter

what i need is low and mid end power~ coz 80% city driving ^^
ToshibaM100
post Nov 13 2010, 09:57 AM

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me too...need some exhaust setup for my 4g18 waja? Any opinion?
The shop i go to, say there is no original hotbit for my car model...only rojak exhaust setup with extractor and center exhaust.

Quote me RM200++....reasonable???
shinjite
post Nov 13 2010, 11:08 AM

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RM200++ for the whole thing?
the_catacombs
post Nov 13 2010, 12:57 PM

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QUOTE(yikloong88 @ Nov 12 2010, 05:54 PM)
mayb sifus can help me in modding myvi 1.3 auto?

4-2-1? or 4-1?

open pod? drop in? air filter

what i need is low and mid end power~ coz 80% city driving ^^
*
4-2-1 more suitable for street use...

QUOTE(ToshibaM100 @ Nov 13 2010, 09:57 AM)
me too...need some exhaust setup for my 4g18 waja? Any opinion?
The shop i go to, say there is no original hotbit for my car model...only rojak exhaust setup with extractor and center exhaust.

Quote me RM200++....reasonable???
*
rm200 for the whole thing is cheap... beware of bad quality and bad workmanship...
Zaypher
post Nov 14 2010, 08:06 PM

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Recently WORKS engineering has the CF air intake which is more like open pod enclosed in a CF. I wonder how is it like?
Hope experienced guys can enlighten..

Should one go for just K&N drop in or the WORKS CF which uses simota?

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