QUOTE(Aeon_Clock @ Apr 3 2009, 01:59 PM)
I'm thinking of fitting an extractor...without the exhaust, dun wan noise from rear...attract police only. Will it have any difference on my 1.3cc Wira?
extractor is part of the exhaust system...
QUOTE(masao343 @ Apr 3 2009, 02:17 PM)
same here, i read quite a lot from the forums so far, and it seems that the extractor is the part that is most important in the entire exhaust setup. your 1.3 and mine 1.5 share the same extractor type
i'm planning to get powerzone's 4-2-1 extractor, they quoted me RM400 (can add RM50 for installation). what do you have in mind so far? Same as you, i prefer quiet exhaust sounds, but i want some "bass" tho when i really tekan. most seems to suggest i add a centre bullet to muffle the sound further, and... as an extra, use an s-flow muffler at the end for further sound dampening. but right now, due to budget, maybe change only extractor...dunno will how loud lei... any bros here got info to share if i change only extractor? sound wise? FC wise? performance gained wise? please share oh!
yes, extractor can be considered most significant improvement if u change it because oem extractor is very restrictive and causes alot of backpressure... no good for mid-high revs....
but changing extractor alone wont give u absolute improvement as ur exhaust piping is still small in diameter and ur oem muffler is quite restrictive as well... there is still bottlenecks along the exhaust path...
QUOTE(Aeon_Clock @ Apr 3 2009, 02:48 PM)
no la...caplang brand. But its the same I guess.
the thing is now whether it'll be of any use...and wat to go for...S-flow, e-flow...etc
I really dun know.
mana ada e-flow la...
muffler wise common ones either s-flow or straight flow...
s-flow - quieter, a little bit more restriction compare to straight flow, good for auto tranny cars
straight flow - louder, more free flow, good for manual tranny as mid-high rpm climbs faster
QUOTE(Aeon_Clock @ Apr 3 2009, 03:59 PM)
yea, I remember someone else in the past complaining about increase in FC after changing exhaust. Isolated cases I guess.
Added on April 3, 2009, 4:36 pmjust asked kweng84...I'm sure you know him in Automotive Garage...if change extractor alone will mostly increase FC. I'm guessing its because it provides better flow of the engine power...no waste when driving, uphill or sth.
improve exhaust flow doesnt increase FC... not properly setup exhaust will cause bad FC... wrong AFR tuning will also cause bad FC... as i said previously, changing extractor alone wont yield absolute improvement... worse, wrong combination with ur midbox, muffler and piping will cause unwanted bottleneck and exhaust turbulance inside the piping, causing worse fuel consumption....
Mar 31 2009, 01:21 PM
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