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Post by princehong on Jul 7, 2009 16:33:38 GMT 8
minimum octane is 95 as stated by Joey before. Qfed experience best felt in high end. U can actually feel more power kicking in. With 98 platinum... power la.. But still loose to those bigger cc car during low gear. But once gear 4 and above.. Hard to say liao la.! But 1.6 and above sure smell smoke!! Haha for sure for sure.... 1.1 NA is 1.1 NA after all.....
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Post by picanyeo on Jul 7, 2009 16:34:43 GMT 8
minimum octane is 95 as stated by Joey before. Qfed experience best felt in high end. U can actually feel more power kicking in. With 98 platinum... power la.. But still loose to those bigger cc car during low gear. But once gear 4 and above.. Hard to say liao la.! But 1.6 and above sure smell smoke!! Hi decentboi, Do you know if QF is better for manual or auto vehicles? or is it good for both transmission? I assume yours is manual right?
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Post by LMF on Jul 7, 2009 16:36:19 GMT 8
my mileage improved after the QF for my Cerato, happy... i so sad huh?
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Post by picanyeo on Jul 7, 2009 16:38:49 GMT 8
minimum octane is 95 as stated by Joey before. Qfed experience best felt in high end. U can actually feel more power kicking in. With 98 platinum... power la.. But still loose to those bigger cc car during low gear. But once gear 4 and above.. Hard to say liao la.! But 1.6 and above sure smell smoke!! Haha for sure for sure.... 1.1 NA is 1.1 NA after all..... Hmm.. I think unless we can add poison like what we do in playing games.. Add turbo, change this change that.. Then perhaps 1.1 pica turbo-charged may have a chance..
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Post by princehong on Jul 7, 2009 17:05:45 GMT 8
Haha for sure for sure.... 1.1 NA is 1.1 NA after all..... Hmm.. I think unless we can add poison like what we do in playing games.. Add turbo, change this change that.. Then perhaps 1.1 pica turbo-charged may have a chance.. haha for sure... Maybe a 158bhp sounds good?
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Post by LMF on Jul 7, 2009 17:15:30 GMT 8
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Post by evererin on Jul 7, 2009 17:21:55 GMT 8
u have few rios that is mod n some have QF before but u also mus find time to come for meet up n know them... else..not many got time to share w u in forum... since everyone got their own work... only get to see them during meet up... see u soon ya? Hey bro, thanks for the input. Yeah I will try to make it for the next MRT... =) great news to hear too! me also wan to do QF if FC improve, more power etc.. but.. waiting for any extra cash to come first..lol.. see u soon in mrt or other meetups daniel bro! =)
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Post by kuremikio on Jul 7, 2009 17:26:46 GMT 8
wow that seems so cool. i suppose its done in malaysia? the structure beneath that pica's bonnet is totally different. maybe just a super-charged pica will be fine in sg...? lol
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Post by LMF on Jul 7, 2009 17:29:41 GMT 8
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Post by kuremikio on Jul 7, 2009 17:31:55 GMT 8
minimum octane is 95 as stated by Joey before. Qfed experience best felt in high end. U can actually feel more power kicking in. With 98 platinum... power la.. But still loose to those bigger cc car during low gear. But once gear 4 and above.. Hard to say liao la.! But 1.6 and above sure smell smoke!! Hi decentboi, Do you know if QF is better for manual or auto vehicles? or is it good for both transmission? I assume yours is manual right? from what i've read in other threads, seems like auto cars benefit more. manual cars experience lesser vibration during lower rpm driving, that's what's most common... as for auto cars, ECU should play some part from the improvement after QF i supposed? fuel efficiency, engine vibration, gear shift smoothness, pick-up... etc.
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Post by decentboi on Jul 7, 2009 23:36:10 GMT 8
But still loose to those bigger cc car during low gear. But once gear 4 and above.. Hard to say liao la.! But 1.6 and above sure smell smoke!! Haha for sure for sure.... 1.1 NA is 1.1 NA after all..... See quote leh.. i say lose to higher cc, will smell smoke. u misinterpret it? mai flame me leh... ya mine is manual.. some say got diff after QF some say no diff. Up to sensitivity of individual butt lar.. But QF plus VSD sure can feel the power la. Guranteed. Now still thinking wether to co CAI..
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Post by princehong on Jul 8, 2009 8:50:03 GMT 8
Haha for sure for sure.... 1.1 NA is 1.1 NA after all..... See quote leh.. i say lose to higher cc, will smell smoke. u misinterpret it? mai flame me leh... ya mine is manual.. some say got diff after QF some say no diff. Up to sensitivity of individual butt lar.. But QF plus VSD sure can feel the power la. Guranteed. Now still thinking wether to co CAI.. haha sorry bro. Anyway, I head CAI is good when combine with open-pod..
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Post by picanyeo on Jul 8, 2009 9:54:16 GMT 8
Hi decentboi, Do you know if QF is better for manual or auto vehicles? or is it good for both transmission? I assume yours is manual right? from what i've read in other threads, seems like auto cars benefit more. manual cars experience lesser vibration during lower rpm driving, that's what's most common... as for auto cars, ECU should play some part from the improvement after QF i supposed? fuel efficiency, engine vibration, gear shift smoothness, pick-up... etc. Hmm.. for me.. FC: Not sur yet.. Have to wait 3 weeks later then will have result.. (1 tank of petrol last for 5 days) Engine Vibration: Actually, I'm not sure about this.. Just that after QF, my pica engine sound different when I started engine in the morning, compared to before QF.. Sounds better.. Gear shift smoothness: When I installed Pmax, I got faster and smoother gear shift.. For QF, I'm not sure about this.. Feels the same to me..
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Post by picanyeo on Jul 8, 2009 10:22:02 GMT 8
regarding A/T pica, did any1 feel that it somehow has more than 4 gears? (think i've read in another post on this... now i'm feeling it too) firstly is when engaged on gear 3: - start off on gear 1, then gear 2 (each changing gear at around 2.7krpm) - then during gear 3, i stepped on the accelerator slightly harder, rpm goes to 3k - the rpm will then drop to 2.7k, power maintains (doesn't feel like a gear shift) - then finally it changes to the last gear where the rpm further drops to 2.3k and i reach the cruising speed of 80km/h another "additional" gear when engaged on gear 4: - while maintaining at 80km/h with rpm at 2.3k going on str8 road - then i engage a standard flyover with same speed - while maintaining my right foot and reach about 1/3 of the slope - engine suddenly gives higher power and rpm increases to 2.8k where i'm still at 80km/h (doesn't feel like gear shift) i'm wondering if it's the ECU that's causing these? like telling the injector to input more petrol to provide a combustion to achieve a certain torque/power determined by our right foot... what i dun get is that if the gearbox's gear ratios or shaft (the things that reflex the rpm on our tachometer?) are fixed, how can it change the rpm even if engaged in the same gear? Hi kuremikio, I drive according to your observations yesterday and I experience the same thing as you in gear 3.. The rpm will drop abit before changing to gear 4.. For this reduction in rpm in gear 3, what i found is if you maintain the same pressure on the accelerator, the gear will change to gear 4.. However, if you increase the pressure on the accelerator at this point of time, the rpm will starts to increase.. up to a point where the ECU sense that the pressure on the accelerator reduces, then it switches to 4th gear.. Then for gear 2, there's actually this change in the torque of the gear.. somewhere in the 2.5krpm range.. There's actually more torque before the next gear.. Does anyone know what is this about? I don't think this got to do with QF.. But i thought it may be good to have a short discussion on this before going back to QF..
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Post by kuremikio on Jul 8, 2009 12:05:49 GMT 8
Hmm.. for me.. FC: Not sur yet.. Have to wait 3 weeks later then will have result.. (1 tank of petrol last for 5 days) Engine Vibration: Actually, I'm not sure about this.. Just that after QF, my pica engine sound different when I started engine in the morning, compared to before QF.. Sounds better.. Gear shift smoothness: When I installed Pmax, I got faster and smoother gear shift.. For QF, I'm not sure about this.. Feels the same to me.. for my case, i dun feel much diff in fc after my list of mods. but in terms of pick-up, over-taking and transmission, no doubt that those had improved significantly. the first and only difference i notice from the sound of my pica is after changing to SJ-CAI. crank start sound is smoother. i also notice when i accelerate harder, i could hear a light "roaring" sound which i think comes from air rushing through the intake. gear shift smoothness is after VS and VSD3 installed. u can hear the engine tone changes but can't feel the shifting much. there's something i just noticed yesterday is that my pica's idling rpm has dropped. its initially hovering rather close to the 1k mark (around 850rpm) now its lower towards the middle (around 700rpm) my latest mod is only the VSD3, not sure if its the cause. just hope it won't have too much vibration after awhile.
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Post by kuremikio on Jul 8, 2009 12:16:13 GMT 8
Hi kuremikio, I drive according to your observations yesterday and I experience the same thing as you in gear 3.. The rpm will drop abit before changing to gear 4.. For this reduction in rpm in gear 3, what i found is if you maintain the same pressure on the accelerator, the gear will change to gear 4.. However, if you increase the pressure on the accelerator at this point of time, the rpm will starts to increase.. up to a point where the ECU sense that the pressure on the accelerator reduces, then it switches to 4th gear.. Then for gear 2, there's actually this change in the torque of the gear.. somewhere in the 2.5krpm range.. There's actually more torque before the next gear.. Does anyone know what is this about? I don't think this got to do with QF.. But i thought it may be good to have a short discussion on this before going back to QF.. hi picanyeo, i feel the change in torque too. its like although u maintained the throttle, the power just comes when the rpm is reached. i will like to know more of this too... seems like A/T pica's tachometer doesn't reflect the rpm base on the actual output? same gear and same speed but different rpm at different time...
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Post by decentboi on Jul 8, 2009 12:43:20 GMT 8
See quote leh.. i say lose to higher cc, will smell smoke. u misinterpret it? mai flame me leh... ya mine is manual.. some say got diff after QF some say no diff. Up to sensitivity of individual butt lar.. But QF plus VSD sure can feel the power la. Guranteed. Now still thinking wether to co CAI.. haha sorry bro. Anyway, I head CAI is good when combine with open-pod.. Pls take note. If u do open pod, low end sure suffer... Our car definitely need more low end, therefore i advise close pod cai.. for individual to asses and consider
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Post by picanyeo on Jul 8, 2009 14:53:24 GMT 8
Hi kuremikio, I drive according to your observations yesterday and I experience the same thing as you in gear 3.. The rpm will drop abit before changing to gear 4.. For this reduction in rpm in gear 3, what i found is if you maintain the same pressure on the accelerator, the gear will change to gear 4.. However, if you increase the pressure on the accelerator at this point of time, the rpm will starts to increase.. up to a point where the ECU sense that the pressure on the accelerator reduces, then it switches to 4th gear.. Then for gear 2, there's actually this change in the torque of the gear.. somewhere in the 2.5krpm range.. There's actually more torque before the next gear.. Does anyone know what is this about? I don't think this got to do with QF.. But i thought it may be good to have a short discussion on this before going back to QF.. hi picanyeo, i feel the change in torque too. its like although u maintained the throttle, the power just comes when the rpm is reached. i will like to know more of this too... seems like A/T pica's tachometer doesn't reflect the rpm base on the actual output? same gear and same speed but different rpm at different time... Hmm.. Could it be a valve or something? Initially, I thought pica only got 8 valves.. But turns out to be 12 instead.. Could this increase in torque at that particular rpm has something to do with valves?
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icewolf
Gear TWO
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Posts: 176
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Post by icewolf on Jul 8, 2009 17:54:25 GMT 8
after QF my FC oso improve, abt 9 -11KM/L now..before is 7-8KM/L and depend on how i wack my car my is kia sportage..for 2L car i think this not bad liao bro LMF, want to try my car on 26 meetup??
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Post by LMF on Jul 8, 2009 17:57:22 GMT 8
You going for the sticker collection ah on 26th? come come meet earlier for kopi, i jio milkboy liao, will jio the others also... my 2L Cerato now gets about 10KM/L if i drive like good boy...
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Post by kuremikio on Jul 8, 2009 18:18:03 GMT 8
Hmm.. Could it be a valve or something? Initially, I thought pica only got 8 valves.. But turns out to be 12 instead.. Could this increase in torque at that particular rpm has something to do with valves? what are the valves for anyway? to control the output after ignition?
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Post by kuremikio on Jul 8, 2009 18:22:20 GMT 8
You going for the sticker collection ah on 26th? come come meet earlier for kopi, i jio milkboy liao, will jio the others also... my 2L Cerato now gets about 10KM/L if i drive like good boy... hi LMF, is the sticker base on first come first serve? Ben said that the booking has ended. but from the list in sgkiaclub.proboards.com/index.cgi?board=Generalchat2&action=display&thread=12673&page=1the number i want is not yet taken... asked Ben but no reply yet...
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Post by picanyeo on Jul 9, 2009 8:00:10 GMT 8
Hmm.. Could it be a valve or something? Initially, I thought pica only got 8 valves.. But turns out to be 12 instead.. Could this increase in torque at that particular rpm has something to do with valves? what are the valves for anyway? to control the output after ignition? I don't know leh.. Does anyone knows?
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Post by princehong on Jul 9, 2009 9:15:17 GMT 8
what are the valves for anyway? to control the output after ignition? I don't know leh.. Does anyone knows? Guys read this. CHeers... Poppet valves are used in most piston engines to open and close the intake and exhaust ports in the cylinder head. The valve is usually a flat disk of metal with a long rod known as the valve stem out one end. The stem is used to push down on the valve and open it, with a spring generally used to close it when the stem is not being pushed on. Desmodromic valves are closed by positive mechanical action instead of by a spring, and are used in some high speed motorcycle and auto racing engines, eliminating 'valve float' at high RPM. For certain applications the valve stem and disk are made of different steel alloys, or the valve stems may be hollow and filled with sodium to improve heat transport and transfer. The engine normally operates the valves by pushing on the stems with cams and cam followers. The shape and position of the cam determines the valve lift and when and how quickly (or slowly) the valve is opened. The cams are normally placed on a fixed camshaft which is then geared to the crankshaft, running at half crankshaft speed in a four-stroke engine. On high performance engines (e.g., Ferrari cars), the camshaft is movable and the cams have a varying height, so by axially moving the camshaft in relation with the engine RPM, also the valve lift varies
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Post by cliuc on Jul 9, 2009 9:28:40 GMT 8
Valves are in the engine to let the air in and the exhaust gas out, part of the combustion process.
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