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 ►+♠+-LYN Proton Persona Owners Club V.XXX9-+♠+◄, Persona: The Definition of Handling

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mengsuan
post May 23 2012, 10:07 PM

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QUOTE(xandras @ May 23 2012, 09:50 PM)
Cannot be. Inactive should be at 0%. No positive or negative..

You get same results on both petrol and NGV?
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Not same. -50% only occur in petrol usually. But usually NGV is positive value and never 0, so I hardly get to catch any possibility to see it -50.0%
mengsuan
post May 23 2012, 11:12 PM

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The NGV EMS is a follower device to command the separate gas injectors at manifold. Does not feedback or interfere in original petrol ECU loop.
mengsuan
post May 23 2012, 11:40 PM

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QUOTE(xandras @ May 23 2012, 11:27 PM)
You'd be surprised. It may not interfere with the petrol ECU loop, but it is still receiving data & readings from all the sensors on the engine to determine the AFR. And this means it needs to go through the ECU, unless a ECU bypass is done where the EMS gets the readings directly from all the sources. The PE's ECU adjusts according to driving style, which means it may be depending on the throttle control/fuel injection for data. With the NGV you may have slightly less power, but the ECU accomodates to it by increasing the throttle input of the PETROL injection.

So what I'm suggesting is, try to drive ur car strictly on petrol only for a few days and check the readings again. I could be wrong, but this theory is worth testing.
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I'm planning to drive on petrol as well. I did a few times to drive for several KM, the STFT is still -50.0%. Although the ECU can learn and decide to inject more gas due to lack of power, and suddenly with petrol, it becomes too rich (hence -50.0% STFT), it should recover in terms of miliseconds or seconds. I'm just quite puzzled.

With -50% fuel trim I think the car couldn't perform at all. biggrin.gif
mengsuan
post May 24 2012, 08:55 AM

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xandras, want to TT tomorrow at SS15 Asia Cafe? Your car has EFR, lets see how far your fuel trim has gone.
mengsuan
post May 24 2012, 10:43 AM

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QUOTE(muslayer @ May 24 2012, 10:15 AM)
I ask the seller, he said to use small D for the front door. Roughly 8 Meter. Total Rm 48/= he quote me. Waiting salary out first
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I asked the seller for 4 doors.

15m small D + 4m small P

Total RM110.
mengsuan
post May 24 2012, 11:42 PM

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Tomorrow TT 8PM at SS15 Asia Cafe. Who's coming?

Can contact me @ 0166838285
mengsuan
post May 25 2012, 08:35 AM

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QUOTE(kennywee92 @ May 25 2012, 12:34 AM)
Can I join? Will come if I got free time  biggrin.gif
*
Sure yes. I wonder how could I contact you guys.

Interested prospects, please PM me your contact
mengsuan
post May 25 2012, 10:07 AM

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QUOTE(Fubar20 @ May 25 2012, 08:55 AM)
Me.
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PM me your contact number. Later we all sit different tables, how? laugh.gif

I might be able to join you guys at EA as well. biggrin.gif
mengsuan
post May 25 2012, 10:11 AM

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Wah, how late? Later I sit there alone, damn sien.
mengsuan
post May 25 2012, 11:13 AM

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QUOTE(raimy_m9 @ May 25 2012, 10:12 AM)
if no work tonight i'll be there, around 8 right? coz i need to be home by 10.30pm..
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Yup, I'll be there at 8.

QUOTE(ZenGTMM @ May 25 2012, 10:13 AM)
hahaha... U dont need to tell her u are a playboy.. U just need to outplay her only.. hehe..
Sorry cant come.. Change of my classes venue..
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Change to where?

QUOTE(Fubar20 @ May 25 2012, 10:14 AM)
Before 8.30 lah. I go there and makan dinner too.
shakehead.gif Even worse than Cinderella.  whistling.gif
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Good, before 8.30 is good biggrin.gif

QUOTE(raimy_m9 @ May 25 2012, 10:25 AM)
so im not cinderella la..but a cinderella man!....

@mengsuan why ss15?, crowded area wor..better find a place with big nice parking lot.
*
Where do you suggest? If you want big empty road with parking road, I think of CoSE. LOL, it has really big roads
mengsuan
post May 25 2012, 11:29 AM

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If SS15 Asia Cafe vs Puchong Asia Cafe, which is preferred among you guys?
mengsuan
post May 25 2012, 11:34 AM

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Ok, then stick to SS15 Asia Cafe for tonight's venue. If we need more space, CoSE industrial area is really not far away. Moreover if your car gets wrecked, just leave it there at CoSE's door tongue.gif
mengsuan
post May 25 2012, 11:54 AM

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QUOTE(VincentChen @ May 25 2012, 11:53 AM)
i cant man, tomorrow malaysian study presentation, now i start doing those slide, dunno can finish by tomorrow or not, shiat man
*
Malaysian studies where got need so much effort? I didn't have to study also get A.
mengsuan
post May 25 2012, 04:04 PM

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QUOTE(nujo87 @ May 25 2012, 03:32 PM)
hi guys,my persona having some tak tak tak sound,after google i think is iafm prob,
do i need to change it?if i dun change will my car have major power loss? notworthy.gif
*
So sure it's IAFM problem by just tak tak tak sound. Not any other parts? tongue.gif
mengsuan
post May 25 2012, 04:26 PM

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QUOTE(raimy_m9 @ May 25 2012, 04:19 PM)
i want to go back...but now i cannnnntnnntttt.t.t..t.t..t.t.t..so hooooowww will beeee..our TTTTTTT tonight... T-T <--- its a spam song sung by raimy for persona and gaga guys..


Added on May 25, 2012, 4:24 pm
u come at 8 or 8.30?....
*
8 or maybe even earlier. Nothing to do laugh.gif

I go home from work, i wash car, then straight go AC
mengsuan
post May 25 2012, 04:45 PM

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QUOTE(Fubar20 @ May 25 2012, 04:35 PM)
shocking.gif You didn't take bath first?  unsure.gif TT postpone?  biggrin.gif
brows.gif In the middle of a stupid meeting.
*
What postpone, of course not. Bath very quick only mah biggrin.gif
mengsuan
post May 25 2012, 06:09 PM

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I'm here already. Going to jln2. Whoever reached just buzz me 0166838285.
mengsuan
post May 25 2012, 08:30 PM

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QUOTE(VincentChen @ May 25 2012, 08:00 PM)
some kind of plastic gua, lol, my car only few months, but bumper got uncountable lines and scratches zzzz
*
Mine is still flawless.

No one at tt yet

mengsuan
post May 26 2012, 01:08 AM

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Had TT with raimy only. fubar ffk.

Raimy's car has very normal fuel trim at idle. Near 0%. Occasional -50.0%

When driving at certain RPM range, both STFT and LTFT will be -50.0%. I've never seen my LTFT had a fucuk value like that. Of course, his car had modded intake/exhaust, this might cause the ECU to go haywire.

Conclusion, our fuel trims are weird. I will get a proper OBD2 diagnostic machine tomorrow if possible. Maybe cheapskate OBD2 scanner fail to read proper fuel trim value.
mengsuan
post May 26 2012, 05:43 PM

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raimy, TT where? biggrin.gif

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