It gained about 5 hp and very minor 2Nm of torque from around 4000rpm onwards.

The open port air filter might have taken in too much air and when matched with a high flow exhaust system, it created less back pressure hence less torque and horse power at the low end.

So for those who uses open air filter and a decated extractor on your Proton Prevé, you have to always keep the engine at higher RPM to maintain your horse power and torque.

Catalyst a.k.a Catalytic converter a.k.a Catcon, is the 1 to control your emission, further burn up those carbon with heat exchange from your exhaust manifold.



The above quote from your post is correct in every aspect regarding campro.

1) Removal of catcon will mean less exhaust flow restriction, hence your low end response will be jeopardized. Do an example by your own, open up the cap of a 500ml bottle and reverse it see the water flow, it flow very slowly. If you shut the cap, poke a small hole on the bottle body, point the water stream at your skin when it shoots out, you'll scream The argument is, having a bigger and better flow exhaust setup, you get MORE out, but slowly. When you have a smaller/tighter exhaust flow, you get less out, but quality and quickly.

2) Exchange of high flow after market filter(be it drop in or open pod), you open the bottle cap, terbalik it and poke a hole on top! Imagine, how do you keep the flow slow? Impossible. You can't drive the car slowly, the low end response is jeopardized.

For a CVT transmission, your TCU will take care of all those changes. So, you really doesn't have to worry too much(other than FC)

yes, it is true IF your exhaust job is just potong and replace job; ie: take out front header, put in 4-2-1 and take out rear muffler and plonk in <whatever> flow exhaust.

It's not the matter should keep the catcon or not. Catcon main function is control emission, has nothing to do with performance. However, the stock pipes are just nice with a catcon to control backflow. If you're talking about performance, you not only need to decat, you'll have to redo the entire piping. Gotta make sure the piping weren't used too big to protect your lowend torque.

Reset your head got lar That is call tarek fius! The same as you pull out the battery pole terminal. The only difference is, tarik fius will only cut off power supply to your ECU, where pull the battery pole will cut off power supply to the whole car. Previously explained, ECU is EEPROM. It needs to be rewrite/reset ELECTRICALLY. Certain part of the data may be erased, such as RAM. RAM only consist of ultra short term memory for vehicle data record, such as last injector volume, firing rate(ignition), intake pressure, O2 sensor, exhaust temperature, radiator temperature(only the temperature reading can be erase, NOT the error code).

So, pull the fius/battery or not, the RAM part of the memory will still be erased when you start the car next time

Mahihi The video there got very interesting audio performance equipment, some huge cable looks like from alternator. Also hor, got 1 big black box on stuck on the side of the battery, wah...! And so many grounding kabel wor, sumore the huge ass copper battery terminal Those are some serious shit. May be pull the fius will indeed reset the ECU

I have to same issue (cold start) from day one. Complain so many times. Service guy told me because I added the brake lock that is causing the problem. What an excuss. Damn!

Now I added a E-Drive it seem help a little and the gear change responds are much better.

ur method is not the same with davidke20 philosophy.
inb4 not davidke20 fanboi. 

p/s : today not at hq. at putrajaya, but still UTILIZE (not misuse) office internet. 
so no gagaclopedia for today. lol.

Do you want to purchase Saga FLX SE original rims ? 15inch 

curious, using cheap oil and change frequently, is mainly due to budget concerns right? however if you can go for extended OCI, save more money, and have a cleaner engine, wouldn't that serve both of your purpose better?

If reach 10k it will reach around 9-10 months apa cerita?

guys just want to use..how is saga flx driving experience and also fuel consumption? Im planning to get saga or myvi. But unsure yet. Personally i prefer saga cause bigger and spacious compared to myvi