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Power FC Just installed the powerFC

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Old Oct 16, 2008 | 12:09 AM
  #1  
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Exclamation Just installed the powerFC

Hey guys,

today i received my power fc... so what I did is... I INSTALLED THE DAMN THING DUH!

I followed Dale's guide to make sure I don't mess up anything, did all of the idle settings and finally took it for a ride! Took less than a sec to feel the incredible difference lol WOW THAT'S AWESOME! No more 3k hesitation and transition between the 10-8-10 boost patern is way smoother. Actually I'm pretty happy with the result!

Although I'm now facing a small issue.... after going WOT for a couple of times, not long after that i noticed the heat warning light flashing... i doubt this is normal! My water temp stayed around 90 the whole time...

Anyways chime in guys
thank you
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Old Oct 16, 2008 | 12:16 AM
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I would not recommend pushing your car right after the installation of your PFC. Let the PFC slowly break into your car.
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Old Oct 16, 2008 | 03:10 AM
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The warning light being the heat light? That means your inj-duty is over IIRC 96% OR Knocking. How many times does it flash? I take it you don't have a commander.
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Old Oct 16, 2008 | 05:55 AM
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Do you mean the exhaust over temp light? I think the PFC will use that light if one of the sensors fails. The commander will be able to show which one is failed as well.
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Old Oct 16, 2008 | 08:35 AM
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can't remember but it is in the pfc manual.

search for the manual in the power fc forum.
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Old Oct 16, 2008 | 08:40 AM
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From: cold
your knock count is most likely over 60 (or injector duty is over 98%, which is less likely). That does not necessarily mean you are actually knocking. The stock knock sensor can be noisy. On the commander display, set it to 8 channel monitor mode. Then after a WOT run, press the up arrow, which is peak-hold mode. That will display max injector duty and max knock.
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Old Oct 16, 2008 | 08:48 AM
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alright thank you guys... i'm going to run your test right away!

and yes i have the commander
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Old Oct 16, 2008 | 08:55 AM
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congrats! pm'd ya
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Old Oct 16, 2008 | 01:11 PM
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well i guess the power fc only needed more time to synchronize last night, I don't get the heat light anymore
Furthermore, i went WOT again full complete pull in 3rd gear to redline and got these peak:

injector duty : 85.5%
Knock : 49

are these good numbers?
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Old Oct 16, 2008 | 10:11 PM
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no
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Old Oct 16, 2008 | 11:16 PM
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Those numbers are fine for stock injectors you do not want to go over 60 on the knock as that is the point where it goes from misc noises (that could be precursors to knock) to actual true knock that is guaranteed to damage the seals.

the thing to remember is where is the knock occuring? you need to get a datalogit or some form of data logging to determine where it is knocking. If its knocking during deacceleration (sp) then this is common. The way to stop that is to remove excess timing in the upper RPM no load area. (upper right hand corner of the map)

That is an area where you will not hit it during acceleration but you will catch it when you let off of the gas. rotaries will often get lean pre-ignition in this area due to the fuel cut feature of the PFC this is not dangerous per se, just annoying, but the only way to be certain is to log the data and look at it.

the 85% fuel injector duty is neither here nor their, stock injectors, stock FPR, stock fuel pump will result in high duty cycles improve any of the three and your duty cycle will go down.

without a wideband though you are shooting in the dark.

so to sum it up get a data logger of some sort (preferably the datalogit as it is plug and play. as well as a wide band (the power fx unit from INGK/NTk is cheap and does the job) and do some logging next so that you can tell whats actually happening.

kenn

Last edited by kenn_chan; Oct 16, 2008 at 11:18 PM. Reason: run on spelling errors and forum nazi's
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Old Oct 17, 2008 | 09:54 AM
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Originally Posted by kenn_chan
Those numbers are fine for stock injectors you do not want to go over 60 on the knock as that is the point where it goes from misc noises (that could be precursors to knock) to actual true knock that is guaranteed to damage the seals.

the thing to remember is where is the knock occuring? you need to get a datalogit or some form of data logging to determine where it is knocking. If its knocking during deacceleration (sp) then this is common. The way to stop that is to remove excess timing in the upper RPM no load area. (upper right hand corner of the map)

That is an area where you will not hit it during acceleration but you will catch it when you let off of the gas. rotaries will often get lean pre-ignition in this area due to the fuel cut feature of the PFC this is not dangerous per se, just annoying, but the only way to be certain is to log the data and look at it.

the 85% fuel injector duty is neither here nor their, stock injectors, stock FPR, stock fuel pump will result in high duty cycles improve any of the three and your duty cycle will go down.

without a wideband though you are shooting in the dark.

so to sum it up get a data logger of some sort (preferably the datalogit as it is plug and play. as well as a wide band (the power fx unit from INGK/NTk is cheap and does the job) and do some logging next so that you can tell whats actually happening.

kenn


I'm not sure I agree with everything there kenn but all good points for sure.

I always suggest a tune if you are not familiar with setting up a PFC. Recall that drastic improvement you felt with just the PFC install? Well you may well get that yet again with a good tune
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