if u are using auto, 2" piping is correct lor.. no need to change to bigger size.. it will only makes ur auto eats more fuel... and hmn... original levin r... i believes as long as it is 2", mid box then until the end with s-flow muffler.. it will be fine... how does the auto exhaust flow i really not sure.. becoz like before.. (this is manual tranny C56), i was using 2" piping direct towards my 2" muffler.. Fuel pedal, i feel it has some kickback feeling... a bit hard ones.. but when i changed to the whole apexi system above.. which is running in 2.3", the whole fuel pedal feel lighten.. and worst nightmare.. the car seems to be wanted to go even more faster.. and it can maintain it rpm longer... *dunno issit the sound produce too siok gua? i am not sure.* but i am 100% sure, the fuel pedal is very light already.. dunno how to say this out.. the car aren't like a donkey brained and dun wanna go when i engage gear sometimes during corner.. it is like a smooth flow now... summarized "MAD DOG! chase" u know. Or MAD cow.. ^_^
tcho, auto really got that much of type of setup meh? i really have nothing info about auto here.. if u dun mind, support some info and images here alright.. might be some important info for me to store inside my blog. :) thanks in advnace..
^_^ and the images above... i simply put.. for u siok ma.. coz u also siok siok ask me wanna sell my new Apexi GT or not.. hahaha... nice right... the owner boss there customize my piping... u can see there is 3 Section above... that guy really did as what i requested.. and his worksmanship... ^_^ I give him 9/10 :)
BTW takako, ANY muffler system or setup.. Try to lower down those coupling plate/ weilding piping joint coupling... the more u have this, the worst air-flow u will get... there is a lot of place who can do it in 2 kerat habis one setup of exhaust.. it gives the exhaust flow smoothness...
mine has 3 kerat.. becoz i were forced to do extra one more for front part... Just an advice.. alright :)
