QUOTE(jsnkok @ May 23 2013, 01:31 PM)
thanks for sharing.. lots of information for the wanna-be modders
Information is meant to be shared. It's better have more well informed owners than less because some shops can detect a noob and charge extra for that.
QUOTE(billy520 @ May 23 2013, 01:44 PM)
thanks for sharing! but certain stuff i think some including myself wanted to know is, the entire exhaust system, you changed to 4-2-1 extractor, removed cat-con, add mid bullet while maintaining ori piping and stock rear muffler? the 4-2-1 must it be from some famous brand or cap ayam 4-2-1 will do?
*add on about the o2 sensor, it is only copper wire or specialized wire? where i am working we have specialized wire for signal transmission. if we swap that over, will it help over longer length?
For my exhaust setup, I didn't enlarge the piping at all, still with the stock piping, a lot of misconception is that the bigger the better, but not for exhaust, exhaust is about about flow, how fast you can let that exhaust out of the muffler is more important. My target of modding the car is to make it more fun to drive by making the engine more lively and more responsive. A more responsive engine is more fun to drive. I didn't add anything to the exhaust system, I just swap the extractor for a SS one, I remove the stock extractor together with the CAT as the CAT is mounted just after the primary runners on the stock system, I then replace the stock mid box with a aftermarket mid box (not bullet) and the rear muffler retain as stock.
On the piping side, our engine is not forced fed and it's a small CC engine and most of the guys here are on light tune only, so by enlarging the piping you are typically giving the exhaust gas more room to cool down before it exits the muffler, colder gas is denser and harder to push compare to a heated gas inside a small pipe. That's why Japanese tuners they make their exhaust system in a venturi step way. The extractor connected to the exhaust port is larger or same diameter of the exhaust port then down to the downpipe section it's smaller and then reduce a bit in diameter until the middle of the car all the way to the back. This helps the exhaust temp drop to be controlled and maintain it's flow rate.
Billy, it's better to invest in a good and proven extractor than a cap ayam one. They are some local made one which are priced quite good. Also when choosing an extractor make sure the inlet of the runners are smooth and does not have bumped up welding marks or have gaps between the mounting plate.
In conclusion, if you engine is not making more power don't enlarge the piping and some might say after install this the car feel more power..Actually you are just freeing up some of the lost power from the engine due to manufacturing tolerance. Therefore, if you take a bone stock saga for a dyno you will see the dyno result shows less than the advertised one.
On the O2 sensor, they are using normal cooper wires even from manufacturer, because the signal that transmit to the ECU is via voltage. I haven't measure myself how much is the voltage drop for each increasing length of a cooper wire but there's definitely a drop. Since the ECU read voltage from the O2 a slight drop might send the ECU a wrong reading as the voltage is only 0.9V to 0.1V.
QUOTE(iskazulka @ May 23 2013, 01:46 PM)
TitanRev can u come to TT? wanna see your "race track" saga.
Iska, my car very stock one always get bullied by Vios and City and MyVi....Hahahaha....now can't free myself for TT. I've miss so many of my home turf TTs also from the guy over at ZTH.....busy with my work and my almost fullmoon daughter now....but I will surely come to join you guys in the future and when I can since I have TTed with other clubs and friends in KL...
May 23 2013, 04:00 PM
U dunno who her husband is dun simply say, nanti he is VVIP then you better watch ur back 
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even you said so canteen 1 and 2 still full house. 
What first time? 
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