Valve timing in Campro is called CPS. VIM is another technology. Proton promise to introduce this in 2H 2007 (which is about now).

Both technology is suppose to improve the engine performance. We all have heard/read about how sluggish Campro is below 4k RPM. Driving in city can hardly take you up to 4k RPM and then there is the issue of noise.

A sluggish engine at low end will consume more petrol as in city we tend to be revving low. Before all these technology, engine are normally tuned to optimum performance at a certain range range of RPM. with these technology (valve timing and VLIM), the engine is suppose to have good perform across wider range of RPM.

you see... the valve open/close sequence is controlled by the shape of the lobe on the camshaft. Since this is a mechanical part, the valve opening and closing timing is fixed. At different engine speed, to achieve optimum performance we need a different timing. The valve timing technology will address this.

now VIM... air and fuel burn in the combustion chamber to run the wheel. so air is one important component in the performance factor. thus people doing CAI (cold air intake), open pod, replace drop-in etc. In most manifold, the path the air travel before reaching the combustion chamber is fixed. Again, at different engine speed, different air condition is prefered. VIM address this by having (as the name...!!!) variable length. At low engine speed, the air will travel faster to the engine (i hope i remember this correctly) and vice versa.

Proton's VLIM implementation uses plastic which again is another advantage. Plastic is easier to form to any shape. So the path can be design to give the best flow.

Hope i got the explanation right. Anyone spot and mistake please do correct. Feel free to add also.

i truly hope so. with the right quality and price, why not???

This post has been edited by demio121: Jul 24 2007, 05:39 PM

Perodua almost sapu an entire market with juz 1 model... Myvi. see... given the right quality (and Myvi is not particularly of high quality) and price, the car will sell. Then again, proton not only have to produce quality car at the right price, they have another more savage battle raging on... consumer perception.

This post has been edited by demio121: Jul 24 2007, 06:02 PM

saga and wira belong to where they rightly so... in the museum. not in production line..!!!

from the last pic, looks like the sedan ditch the awful looking Gen2 seat. I m interested to see the interior, if Proton address any of the complaint.

this image show a different bumper compared to this post.

Persona used to be Wira name in UK. Perhap its really time for the sedan to replace Wira. BTW, Persona name is miles better then Gen2.

izzit??? man... i didn't spot tat. my bad.

From the close up, the least the door trim look nicer and gone is the ugly seat.

This post has been edited by demio121: Aug 13 2007, 09:18 AM

i was thinking of a major change inside with a totally new interior design. the cheap looking aircon vent, small button radio and horizontal air-con knobs are still there. The door trim looks much better now.

Gone also is the samurai hand brake design, which o thought looks garang but not too practical.

i think the arm rest + box is also raised higher rite??? of maybe bacause without d samurai design, it look higher.

well, @ least Proton did something to change for the better.

This post has been edited by demio121: Aug 15 2007, 12:25 PM