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 IAFM, CPS, CamPro, All Discussions here.

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SUSathlonxp
post Apr 7 2008, 10:17 PM

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campro = no variable cam, no variable valve, no nothing

iafm = TVIS found on 1st gen 4AGE from AE86 from year 1985 yawn.gif

cps = variable valve lift which dont work. a sophisticated and well designed engine with valve lift tech should make 165hp like B16A. this "new technology" could be found in 1988 EF9 CRX B16A

vim = variable inlet manifold

today is 7/4/2008. phailed

This post has been edited by athlonxp: Apr 7 2008, 10:19 PM
SUSathlonxp
post Apr 7 2008, 10:38 PM

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QUOTE(RCrex @ Apr 7 2008, 10:35 PM)
technology followed far from behind the century eh?
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from the 80s rclxms.gif rclxms.gif


SUSathlonxp
post Apr 8 2008, 06:20 PM

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QUOTE(sphiroth @ Apr 8 2008, 01:34 PM)
VIM cover the torque dip I thinks. Because CPS open earlier than VTEC, it cannot use a wild cam like VTEC. A high lift cam would only give optimum power a high RPM. The higher the RPM, the higher lift is better. VTEC open at 7k (if not mistaken), thus it can utilize higher cam than CPS. High cam (high lift) is useless in low RPM.  This is what I understand about cam profile system. Pls correct me if I'm wrong.  icon_rolleyes.gif  icon_rolleyes.gif
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the problem is with proton do not have the ability to produce a high revving and reliable engine at a reasonable cost..proton can put in any degree cam lobe they want..but the engine will not be reliable because it is made by proton at constant 7-8k rpm.

cps is running on a rather high cam profile (but not high enough to produce astonishing power), this make low end suffer and make fuel economy worse.

if proton want to make it a high peformance engine, the low rpm power too will suffer badly like a B16A or 4AGE.

we can say that campro is something in between power and fuel economy. but both dont works

cps as a high performance engine = phailed
cps as a fuel economical engine = phailed

japanese manufacture rarely produce those high peformance engine in low price family saloon anymore.
SUSathlonxp
post Apr 8 2008, 07:08 PM

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QUOTE(allenultra @ Apr 8 2008, 06:57 PM)
athlonxp

in GEN CPS and Waja CPS

both engine equip with VIM at low end, CPS at high end.
I don't see "make low end suffer and make fuel economy worse" in it.

Is CPS high performance engine? Maybe but not as high as vtec. I don't see any recent Honda 1.6litre car with vtec. Maybe compared with City/Jazz 1.5 Vtec?
CPS never meant to be fuel economical engine but with the VIM, it does gives some improvement.

Thus it isn't fail. Its just not good enough compared to the mature vvt-i or dual vvt-i.
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vim at low end? cps at high end? proton website tell u this of course..but real life it is not like this

CPS is not high peformance engine and not fuel economical engine..then wat is this engine good at? boat anchor perhaps.. thumbup.gif

if cps isnt mean for fuel economy..why should proton make something that is not economical and put it in a low cost everyday family saloon?

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