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 DVVT vs VVT-i vs VTEC vs i-DSI comparison

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imperialrealcs
post Oct 14 2008, 05:21 PM

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QUOTE(ZeroSP @ Oct 14 2008, 10:29 AM)
L15A still lose to D15B by the way, L15A 110PS D15B 130PS and B16B 175PS. Let's see what's in AVTEC in the coming 3 years.

Definitely... B16 is another story than L15... And Campro and CPS, even the Lotus Manager will tell it is 10 years back technology when my dad went for Lotus Exige S. And my brother knew the engineer of Campro and CPS, Campro is fixed cam profiling which the engineer said nothing much, while CPS it's like they modified it into 2 set of fixed valve timing to provide better low end torque, no lifting for CPS and Campro. And that engineer says, "CPS and Campro are old tech la, but still Ok if it is on Manual Transmission"
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so how exactly the cps changed between "2 set of fixed valve timing" ?
via different 2 fixed cam lobe in a single camshaft?
how was that different than that in b16 VTEC?

QUOTE(ZeroSP @ Oct 14 2008, 04:24 PM)
If only I heard wrong from the engineer than I may be wrong... Lotus is an engineering company, they don't have their own engine but they have all the research and technology. Such as the Lotus Exige S, Elise... They are using Toyota 1.8 VVT-i engine for Elise, and for Exige S, they supercharge it. And the ultra light weight and super handling Lotus chassis. So that indeed Campro and CPS they say only Cam Profile Switching, no lifting. Believe it or not, Proton claims that Waja CPS 125PS, but yet on the road they still lose to 110PS L15A.
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what a backfire statement doh.gif
waja cps weights 1235KG and 125bhp while city weight only 1090KG and 110bhp doh.gif
even the super b16 VTEC claimed 160bhp lost to 122bhp lotus elise doh.gif

QUOTE(sphiroth @ Oct 14 2008, 04:51 PM)
Paultan already dyno a CPS Gen.2 at got about 109whp in a hot afternoon.  doh.gif
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thats already on-crank bhp for honda city.. after all the transmission loss, i wonder how the L15A will win blush.gif
sphiroth
post Oct 14 2008, 05:28 PM

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QUOTE(imperialrealcs @ Oct 14 2008, 05:21 PM)
so how exactly the cps changed between "2 set of fixed valve timing" ?
via different 2 fixed cam lobe in a single camshaft?
how was that different than that in b16 VTEC?
what a backfire statement doh.gif
waja cps weights 1235KG and 125bhp while city weight only 1090KG and 110bhp doh.gif
even the super b16 VTEC claimed 160bhp lost to 122bhp lotus elise doh.gif
thats already on-crank bhp for honda city.. after all the transmission loss, i wonder how the L15A will win  blush.gif
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I wonder if his engineer friend is really an engineer.. whistling.gif laugh.gif
Xp3rT
post Oct 14 2008, 06:22 PM

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proton neh??
Gouki
post Oct 14 2008, 06:46 PM

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I think the new Campro CPS should be faster than the L15A VTEC. L15A VTEC is only on par with the older Campro + manual. With the extra power and torque on the new CPS, the old L15A sure will lose, unless you are talking bout the new L15A iVTEC which has yet to be proven. smile.gif
SUSathlonxp
post Oct 14 2008, 07:43 PM

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i tot the new jazz vtec got 120hp?
dstl1128
post Oct 14 2008, 08:18 PM

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QUOTE(ZeroSP @ Oct 14 2008, 04:24 PM)
Such as the Lotus Exige S, Elise... They are using Toyota 1.8 VVT-i engine for Elise, and for Exige S, they supercharge it.
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Exige (and Exige S) uses VVTL-i 2ZZGE Toyota engine with Lotus own ECU and settings.


Added on October 14, 2008, 8:20 pm
QUOTE(imperialrealcs @ Oct 14 2008, 05:21 PM)
thats already on-crank bhp for honda city.. after all the transmission loss, i wonder how the L15A will win  blush.gif
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Probably 4spd auto Waja CPS vs L15A CVT?




This post has been edited by dstl1128: Oct 14 2008, 08:20 PM
ZeroSP
post Oct 15 2008, 12:25 AM

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Ok... Since I am making so much noob statement here... I just don't know how to explain then... Anyway, thanks sphiroth for the link. And to imperial, I have to respect whatever you say.. But what I test is just what I say bout the CPS vs L15, and City dun have that much transmission lost because don't have the torque converter... So forgive me everyone if you all cant take my noob statement.

This post has been edited by ZeroSP: Oct 15 2008, 12:28 AM
sphiroth
post Oct 15 2008, 12:31 AM

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QUOTE(ZeroSP @ Oct 15 2008, 12:25 AM)
Ok... Since I am making so much noob statement here... I just don't know how to explain then... Anyway, thanks sphiroth for the link. And to imperial, I have to respect whatever you say.. But what I test is just what I say bout the CPS vs L15, and City dun have that much transmission lost because don't have the torque converter... So forgive me everyone if you all cant take my noob statement.
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Nevermind, we all make mistake. But if you're not sure about something, better put 'AFAIK' or 'IMHO' before you're statement. nod.gif
ZeroSP
post Oct 15 2008, 12:48 AM

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What's your 0-100 timing sphiroth? From the video, its like 10-11 secs...
imperialrealcs
post Oct 15 2008, 02:31 AM

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QUOTE(dstl1128 @ Oct 14 2008, 08:18 PM)
Exige (and Exige S) uses VVTL-i 2ZZGE Toyota engine with Lotus own ECU and settings.


Added on October 14, 2008, 8:20 pm
Probably 4spd auto Waja CPS vs L15A CVT?
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but cvt transmission loss way much lesser than conventional autobox wo sweat.gif

QUOTE(ZeroSP @ Oct 15 2008, 12:25 AM)
Ok... Since I am making so much noob statement here... I just don't know how to explain then... Anyway, thanks sphiroth for the link. And to imperial, I have to respect whatever you say.. But what I test is just what I say bout the CPS vs L15, and City dun have that much transmission lost because don't have the torque converter... So forgive me everyone if you all cant take my noob statement.
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its alright laugh.gif
juz dont say ur vtec is heaven and other was hell.. u will definitely spark flame from other owner..
try to do a neutral comparison next time, i love to flame fanboi tongue.gif
dstl1128
post Oct 15 2008, 02:57 PM

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QUOTE(imperialrealcs @ Oct 15 2008, 02:31 AM)
but cvt transmission loss way much lesser than conventional autobox wo sweat.gif
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I though that's the reason L15A+CVT could possibly wins Waja Campro CPS auto.
imperialrealcs
post Oct 15 2008, 06:13 PM

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QUOTE(dstl1128 @ Oct 15 2008, 02:57 PM)
I though that's the reason L15A+CVT could possibly wins Waja Campro CPS auto.
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aiyo boss, since cvt has much lesser power loss, thats y we are comparing with campro cps manual
but dyno figure tells that on wheel for cps already same as L15A VTEC on crank power.. so after all the transmission loss, how can the L15A VTEC win the cps?
dstl1128
post Oct 15 2008, 08:41 PM

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How about car weight? Gear change latency?
Gouki
post Oct 15 2008, 08:57 PM

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QUOTE(imperialrealcs @ Oct 15 2008, 06:13 PM)
aiyo boss, since cvt has much lesser power loss, thats y we are comparing with campro cps manual
but dyno figure tells that on wheel for cps already same as L15A VTEC on crank power.. so after all the transmission loss, how can the L15A VTEC win the cps?
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Well, i suppose the Waja will still pull away from the 1st gen Jazz but by a small margin only. Coz like someone mentioned here, power to weight ratio and CVT can keep the power and torque at constant rpm while the manual in the Waja CPS will need to upshift, hence it cant hold forever at its peak power like how the CVT can do.

But i have tried real world test between the 1st gen Jazz with L15A VTEC against a Gen2 R3 MME from standstill drag on an empty land. The Jazz with L15A VTEC had a full HotBits 4-2-1 full straight flow exhaust system + K&N open pod with custom air-ram pipe on 17inch rolling stock, while the Gen2 R3 MME (without CPS) has stock R3 4-2-1 full straight flow exhaust system + R3 spark plug cables + K&N drop-in air filter on 16inch rolling stock. Manage to do few runs and the result is pretty constant which is both are on par neck-to-neck battle for about 600m drag where the Gen2 manage to hit 3rd gear and both still pulling side by side. smile.gif
Lim Ling Yang
post Oct 15 2008, 11:05 PM

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CVT is gay lol.
Anyways IINM there is gonna be a racing spec hybrid civic with performance cvt.....lol....I find the idea....odd....
imperialrealcs
post Oct 16 2008, 12:13 AM

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QUOTE(dstl1128 @ Oct 15 2008, 08:41 PM)
How about car weight? Gear change latency?
*
city lighter by about 200kg.. but both shift as fast? or maybe the cvt would be slightly lower

QUOTE(Gouki @ Oct 15 2008, 08:57 PM)
Well, i suppose the Waja will still pull away from the 1st gen Jazz but by a small margin only. Coz like someone mentioned here, power to weight ratio and CVT can keep the power and torque at constant rpm while the manual in the Waja CPS will need to upshift, hence it cant hold forever at its peak power like how the CVT can do.

But i have tried real world test between the 1st gen Jazz with L15A VTEC against a Gen2 R3 MME from standstill drag on an empty land. The Jazz with L15A VTEC had a full HotBits 4-2-1 full straight flow exhaust system + K&N open pod with custom air-ram pipe on 17inch rolling stock, while the Gen2 R3 MME (without CPS) has stock R3 4-2-1 full straight flow exhaust system + R3 spark plug cables + K&N drop-in air filter on 16inch rolling stock. Manage to do few runs and the result is pretty constant which is both are on par neck-to-neck battle for about 600m drag where the Gen2 manage to hit 3rd gear and both still pulling side by side. smile.gif
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the oldest campro was disaster.. fullstop
Lim Ling Yang
post Oct 16 2008, 01:00 AM

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QUOTE(imperialrealcs @ Oct 16 2008, 12:13 AM)
city lighter by about 200kg.. but both shift as fast? or maybe the cvt would be slightly lower
the oldest campro was disaster.. fullstop
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Lol cvt doesnt shift gears.



BTW out of topic. I know a car that has 200bhp which does 0-100 in less than 4 seconds.
drool.gif drool.gif drool.gif
To buy it you only pay rm314,188.00 including insurance.
And it is only 2261 cc so the tax is cheap.

This post has been edited by Lim Ling Yang: Oct 16 2008, 01:01 AM
ZeroSP
post Oct 16 2008, 04:29 AM

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CVT 7-speed... The CPS that I run is Waja... I used the manual mode anyway...
Lim Ling Yang
post Oct 16 2008, 10:29 AM

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QUOTE(ZeroSP @ Oct 16 2008, 04:29 AM)
CVT 7-speed... The CPS that I run is Waja... I used the manual mode anyway...
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Lol that 7 speed is fake one haha.
greedy5513
post Oct 16 2008, 10:54 AM

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QUOTE(ZeroSP @ Oct 16 2008, 04:29 AM)
CVT 7-speed... The CPS that I run is Waja... I used the manual mode anyway...
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A continuously variable transmission (CVT) is a transmission which can change steplessly through an infinite number of effective gear ratios..

wikipedia.

you want speed and you want to save fuel? go play your need for speed or any racing game.

又要马儿跑得好,又不给马吃草。

want horse run fast, but don let horse eat grass

how to give u horsepower? no horsepower no speed.

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