if you go for a thermal wrap for the extractor what will happen?From what i know,if you thermally insulate the extractor,the heat of the exhaust gas will be high,hence the velocity of the gasses will be faster so your exhaust system will perform more efficiently..is this wrong?

Good article..i guess thermal wraps are a no no then..

5)Dont bother
6)Ditto

Heres my advise,
-good quality extractor,piping can remain same,follow ori route (dont oversize too much,1.6" is good for stock engine),straight thru muffler.

-High flow,good filteration air filter. Apexi dual cone recomended

-Do up your handling such as stiffer suspension,shorter springs and anti roll bars.

-Engine management

not worth the change.since urs is a vdo,just de-cat and replace the resonator with a bullet.maintain the same piping following the original route.

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Added on December 16, 2008, 3:02 amany one can cut and paste,the point would be the explanation.

This post has been edited by ryan_hustler: Dec 16 2008, 03:02 AM

mine was rm180 from powerzone..

http://www.powerzone.com.my/catalogue/11.jpg
this is 2" from powerzone with mid bullet

ive contacted kweng84 a few times to ask about exhausts.He seems to know about a lot of the stuff,just that i did most of my piping work at melaka. I almost went to his shop but didnt have the time. But im very satisfied with the work at melaka,even if the guy couldve asked me to change this and that for more money,his recomendation was one of the cheapest and best setup ive had so far.

oh..didnt you test it at the shop? if the sound was not to your liking you couldve changed it there and then right? btw,whats ur ride?

wasnt that the terion moderator o sumthin?

ur car no cat con

Header wrap can cause the metal to become brittle and break like biscuit.

This guy really johnkor?

Looks nicer,prevents corrosion..but my friends chrome header now looks gold...weird,maybe the plating too thin..

Shiny surfaces reflect heat,not sure it this has any effect on the outside of the header but maybe chromed inside might be good for turbo applications?..

This post has been edited by ryan_hustler: Apr 7 2009, 12:49 AM

obviously..ur blm 1.3 and you changed ur piping to 2"..if piping diameter was directly proportional to power you would see most performance cars have drain pipes as their exhaust system.

There are a few important considerations when changing ur exhaust piping..
firstly is to provide a smooth path from start to exit..no kinks, bends and sharp turns..
secondly is to maintain exhaust gas velocity..the diameter of the piping must be large enough to allow the exhaust gasses to sufficient flow yet small enough to maintain the gas velocity all the way..

Think of these two concepts like a garden hose..when you turn it on water flows,place ur thumb on the outlet to narrow the opening and the water flows faster..the amount of water is the same,just that the pressure is now more..
theres too many more to list and im bored of explaining already..go look up how an exhaust system works before making any more idiotic modifications and wonderin why your car is now slower..

If you dont feel a difference prolly means there really isnt any difference in ur modification in terms of power..if you really want to run a test by resetting the ecu just remove the car battery terminals for awhile and reconnect them..

as for is back pressure necessary for an auto tranny, i have no idea but from my knowledge back pressure is never a good thing and should be minimized where possible..any one else has an opinion on this?

vdo is siemens ecu as opposed to yr 2000 and latter models which were mmc..theres really no re tuning of the ecu,the mapping is fixed.
maddriver says theres seperate maps for campro engines and the SC can select between the two..waja i gues not

all proton ecu is not tweak-able..the mmc is even more simplified.