hotbits are mandrel bent

damm.. just install oversize center bullet (old one habis fiber). Hmm.. feel like my car pickup is not like the old one centre bullet. (Using trumpet). found a very nice MUGEN twinloop with JASMA tag. Hmm want to try it lah.

---

Added on October 9, 2009, 4:07 pm
Very2 tempting..

This post has been edited by Mayor: Oct 9 2009, 04:07 PM

For overall... more HP more fuel consumption. So, leave the standard car that way. The important thing is, change your spark plug as scheduled.

dear all sifu, want to get opinion or suggestion for changing the whole exhaust system for my 2001 satria gti, any one can recommend which is the best shop beside wai heng or wai yip , you guys know lah......

jianhang

can someone recommend me extractor for 1.5L VVT-i engine?
Thanks..

Guys,

Just got my cefiro A33 2.0 downpipe( Y-pipe) replaced, by removing 2 cat-con, 1.8 inch piping all the way from runner until center box( silencer?).

Significant improvement on low-end power, sufficient torque given around 2k RPM, mid is still acceptable, but top end power has recede, FC had increase as well, from 400km per tank to 350km per tank(50% HW 50% city).

I've not change my rear muffler and center box, as it should be, noise level had increase 15-20%. If i wanted to balanced out top end power and low end power, which part of the exhaust system need to be changed? S-flow muffler is currently in my wish list, or perhaps a bullet replacing the center box. Guys, do u need to fix my piping (from the Y-joint all the way out) to a larger diameter piping, say 2.0?

Really hope to get enlightened...

Thanks.

4-2-1



Go for the S-flow muffler and the bullet that u mention. You doin the right thing. you 1.8 piping is already enuff. no need so big already... 1.8 less restrictive already.....

Brapa % amek?

got 1 more.. ah seng at taman rashna klang.. hehe, 5% at least.. hehe

do you think that it is ok to just replaced the extractor and maintain stock for other parts?
or need to change the bullet also?

---

Added on November 6, 2009, 12:54 am
u can feel the difference after changing stock restrictive exhaust manifold to tuned length 4-2-1 extractor...
but all the best if u change the whole thing..

This post has been edited by the_catacombs: Nov 6 2009, 12:54 AM

For Proton Campro engine, which exhaust set up is the best? 4-2-1 or 4-1?
Since 4-1 assists in later RPM range and that the campro kicks in around 3.8k rpm, do u think it is wise to go for 4-1?

Or 4-2-1? since campro is known for its sluggishness before 3.8k rpm, probably it is better to improve the low end torque?

What you guys think?

depends where is ur useable powerband...

Jian Hang? The one from Batu Cave?

Actually I went there before, and I saw a set of hotbits there.... It is so obvious then it is a used set, and they wanted to sell it to me for RM11++.00
...sorry can't remember the exact number.
I can say they are very helpful and willing to let me test a few setup just to lower the noise... But I would expect them to be at least "flexible" on their pricing...

...The thermal wrap still tangling on the pipe le....hahahhahaha

my opinion is it depends on your car daily usage.
If you always travel far, maybe you should opt for 4-1 since it will improve in later rpm range.
for city driving, you can choose the 4-2-1 because of the improvement in low end torque.
just my 2 cents...

i thought so too. just want to hear other opinions.
Thanks yeah for your 2 cents
btw, what setup you use?

---

Added on November 15, 2009, 9:20 pmbtw i have really bad experience in wei yip. The people there are real ah beng gangster.
Haha, i installed cap ayam exhaust system from their place and i learned from it
Now i know the importance of exhaust system and why we should not settle for cap ayam.

This post has been edited by Zaypher: Nov 15 2009, 09:20 PM

guyz, i have a question ...

i have recently installed a straight flow muffler and the noisy is getting into me ...
currently using a short straight bullet (roughly 12" long) ... the unker that installed the straight flow muffler for me suggested that i install another bullet (roughly 15" long) further down on the exhaust piping ... he guarantee at least 30% noise reduction ..
my question is, will 2 bullets seriously reduce the exhaust noise? ... and if having 2 bullets, will it decrease overall performance? ...
any suggestions and advice? .. thanks

does anyone know if i want to change my stock Wira 1.5 (M) Carbie exhaust manifold & front downpipe to the Powerzone 4-2-1, is it a plug n play procedure whereby they do not need to cut halfway my front dowpipe to create a flange joint in order to mate with the new extractor that is required in other extractor products found in the current market?...

reason being i fear the normal welding quality done at the mod w'shop is not as good as those TIG/MIG welding made in the factory...members reply are highly appreciated...