PowerZone's 4-2-1 extractor was RM400 the last time I ask for pricequote. You'll get two for RM800

For me, a step by step would be extractor -> air filter -> muffler -> camshaft -> piping.

The only problem for camshaft upgrades nowadays, none of the manufacturers seemed to bother making cams optimized for automatics.

I put piping for the last is because oversizing the exhaust piping does not do much. You could even feel power loss at lower rpm. Besides, you're on automatic. For automatic, the best performance mod is to gain as much power as possible from the lower till the midrange rpm.

For the muffler, maybe you could try look for 2nd hand Tanabe s-flow.... they're usually priced below RM400. For value setup, maybe you can get an 'F-1' brand muffler. It's kinda 'cap ayam' but my cousin had one of those last time... s-flow type with big 'stomach'. The sound is not noisy. And probably, you can remove the catalytic converter and replace it with bullet silencer to reduce more noise.

well... you can actually install a custom ram pipe and add open pod K&N

Sparepart shops that carry genuine K&N filters might have them. I'm not sure which shop, but probably you can try ask Siong Fah (Krokop).

Cracked extractor is dangerous if it leaks exhaust gas. Just imagine how hot the exhaust gas there.... and it may cause power loss as well.

If it's just minor crack lines then it probably still okay, but recommended to be replaced to avoid any unwanted problems later.

Hurm, need some advice here on my exhaust system. I'm using a 1.3 efi satria, n i've changed the stock extractor to a zenden 4-2-1.When i did the change at the workshop, the mech advised to remove the cat converter to ensure the exhaust gas flow is not restricted, so i did juz that. The mech replaced the cat converter with a normal piping. Everything else was left at stock. Relatively I can feel the power at lower RPM (juz wut i was aiming for since i dont like revving high).

After a couple of days i found out that the noise is quite unbearable for me, so i went back to the shop and asked for a solution, n they said to add a bullet (some ppl call center muffler) to replace the cat converter that was removed earlier. I did juz dat n observed a reduction in the noise without any power loss, but the noise reduction was not as I expected. I was wondering if there is anything i can do to make the noise sound like stock again, while keeping (or better, increasing) my car's power?

I just removed my CAT today...damn satisfied Tested with my frens car with stock exhaust...my car was ahead by 2 cars

At this moment, in Malaysia, it is not illegal to remove the CAT.

As for sensors in the CAT, it all depends on the make of the car. Some only has 1 sensor before the cat, hence removing the cat does not screw up the sensor. Some has a second sensor in the cat or after the cat, which may trigger the check engine light after the cat has been removed.

Send your car to the experts la...exhaust jobs are trial and error stuff. Dun send to those Wei Yip kind la Where are u staying btw?

thom_chai, for ur 1.3 wira, there's only one sensor which is before the cat, so i dont think it'll screw up the sensor.egiewan's driving a civic meh,different from our proton. but u must know that removing the cat will increase the noise a bit..im still modifying my setup to reduce the noise

I would say.... adding more than one bullet is idiotic. 3 bullet is....

Better spend on good muffler instead of adding too many bullets. Bullet restricts exhaust gas flow and installing too much of it is just a waste.

You get better performance/noise ratio with good muffler plus 1 bullet, compare to crappy imitation muffler with 3 bullet.

Loud exhaust (esp those N1 type like APEXi or 5Zigen) are originally meant for track usage, not road... that's why noise is not a concern.
For good workmanship... go to William Exhaust @ Kg.Wireless.

As for exhaust tuning (exhaust diameter, header type, mufflers etc.) you might wanna ask the experts.

Anyway.... you mentioned that you're driving a Wira 1.3 w/ mmc system... right?

You can remove the cat... no problem.

so any suggesdtion on how to solve this prob?  i meean any suggestion on which muffler i shud get?

btw, its really daman anoyin... its a loud hummin noise when its jus in idle!!!

not really necessary, but it is better to do so
But beware of your FC, sometimes it helps sometimes it doens't~~