I do agree with u to certain point, i.e; engine braking automatically turn on when we slow down the vehicle..
If u say its cvt noise, I wonder why other cvt like nissan sulphy and teanna dun hv this noise?

no gear how to adjust?

The sound it makes is due to the pulleys tighten back at a fast rate. Thats why the "whurrrrrr" sound is much more apparent (louder) when you stop from 80kmh to 0 than stopping from 50kmh to 0.

The engine braking (downhill recognition) in the VT3 is engaged automatically the moment the TCU detects a slope. The only way to cancel the downhill recognition is to put your foot on the throttle but that will consume a lot of fuel in that process therefore it is recommended to just leave the CVT to do its job and users have to get use to its characteristic. While going downhill, although rpm shoots up to 2,500 rpm, the amount of fuel injected into the engine is equivalent to the amount injected during idling [foot of throttle], so it will not contibute to high FC. During this process, the engine is actually running on lean mode (air ratio more than fuel ratio) and therefore it will be a bit hotter than usual.

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Added on June 12, 2012, 3:30 pmThe Xtronic CVT are much more refined CVT than the Punch VT2/VT3/VT4 CVT. Not to mention the Xtronic actually has even lesser moving parts than the VT series CVT. It might have the noise but since it is a much refine unit, it could be even quieter or completely being muffled by Nissan.

This post has been edited by V12Kompressor: Jun 12 2012, 03:30 PM

Many thanks.

For driving holiday, which would you recommend.
Drive from JB - Kuantan - Kuala Trengganu - Kota Baru
KL - Penang - Kota Baru - Kuantan - KL.

bro

you mean going down hill, we should not press any gas at all? what about those highway going downhill?

So does that means Xtronic CVT would be more reliable than VT3? Does the Xtronic uses wet clutch and hence increased fuel consumption?

yes, just let it roll down unless you want to speed up, then you can add your desired throttle level.

yes, the Xtronic CVT is more reliable since it has lesser moving parts. It doesn't use any clutch, it uses torque converter. Slightly higher power loss compared to clutch base CVT, but more durable.

How's Toyota and Honda's CVT in comparison with Punch's.

For Honda, I'm not very knowledgeable about their CVT. Heard their new CVT is very good but its only available in Japan and US Honda Accord, for now. The older Honda City one is also clutch based like the Punch VT2/VT3 and some said it behaves more or less like the VT2/VT3.

Smoothness
Nissan > Toyota > Punch

Durability
Nissan > Toyota > Punch

Efficiency (power loss)
Punch > Nissan > Toyota

Price
Punch > Nissan > Toyota


All these are subjective and not a final opinion so it is subjected to other opinions, etc.

wah, like that after drive a few years the CVT will kong and have to change ....

the Punch CVT actually has a lifespan of 200,000km on paper. And don't worry, every parts inside is replaceable and the CVT itself is serviceable. In fact, Punch has the intention to set up a hub in Malaysia to solve/troubleshoot/fix the CVT sold by Proton. So if your belt snaps, you don't need to change whole CVT. Just replace the belt.

Oh, and just to add, the CVT has been reported to be tested to up to 250,000km by Proton engineers during the Preve development period.

tx for the insight. glad to know don't have to change the whole thing but still i believe will be expensive

once there's enough people buying them at a large scale, then everything will be priced lower, so no worries.

So far, the Saga, Exora Bold and Preve uses the CVT. The Saga and the Preve will be the volume seller and hopefully, this will bring down the price of the CVT and CVT components.

Maybe stop by at Gambang Water Theme Park for 1 day? Sorry off topic

Tq for enlightening, its a good news for EB owners. Since we know now that the characteristic of VT, can improve
lower the noise by installing sound proving at the firewall??

I'm sure proton is able to achieved their target since the new cfe engines were introduced, coz more power & better styling is what most buyers are waiting for in our Exora..
Btw, is preve using the same cvt as bold?? Coz, I had test drive preve, I felt the acceleration is not as powerful
as the EB..

Damn. Think I got knocking sound somewhere near the front airbag dashboard when going over rough ground.

yes, soundproofing definitely helps.

Preve Premium (CFE) is using the same VT3 with Exora Bold Premium (CFE). The difference in acceleration is due to the throttle response in the Preve which was tuned slightly retarded. The bold throttle level is well balanced between responsive and retard.

Hi bro, how much to sound proof? is it expensive?

http://forum.lowyat.net/topic/2262458/+60

you can even check out my review there...

I DIY myself on my car...

Punch uses wet clutch. Does this wet clutch wears out similar to the clutch in manual transmission?

yes. due to constant engagement and disengagement, it will cause wear and tear like normal clutch also. Only the durability is longer than normal clutch since it is lubricated (wet).

OMG, why suddenly I became Kristof