PLEASE HELP!!! Injector duty is 84%
#1
ninja
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PLEASE HELP!!! Injector duty is 84%
I just recently installed a greddy 3 row fmic and i took the car out for a test drive and according to the commander, the injector duty is 84%. Is this good or bad? Any thoughts/suggestions? Thanks
By the way my car was tuned for 12psi prior to the installation of the FMIC.
By the way my car was tuned for 12psi prior to the installation of the FMIC.
#3
Originally Posted by BoostedFd3s
I just recently installed a greddy 3 row fmic and i took the car out for a test drive and according to the commander, the injector duty is 84%. Is this good or bad? Any thoughts/suggestions? Thanks
By the way my car was tuned for 12psi prior to the installation of the FMIC.
By the way my car was tuned for 12psi prior to the installation of the FMIC.
#4
Original Gangster/Rotary!
iTrader: (213)
You're fine. Stock side feed injectors can run higher duty cycles b/c they are cooled by the fuel, so it's harder for them to overheat and stick open/closed. You lose tuning control though above 85-90%, so that you're essentially at wide open 100% duty.
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#8
Moderator
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Lemme guess - the boost gets to 12 relatively quickly, then just keeps rising and rising and rising? And this is on stock turbos?
If so, you have a bona fide case of boost creep. You're really lucky you haven't blown your motor. Quit boosting hard until you can pull the turbos and port the wastegate. Read about it in the FAQ.
Dave
If so, you have a bona fide case of boost creep. You're really lucky you haven't blown your motor. Quit boosting hard until you can pull the turbos and port the wastegate. Read about it in the FAQ.
Dave
#10
The Laser Man
Hey Guys... I took a picture of my peak output from my PFC~~
It says 100% Injector Duty however I heard that this is not a good sign.
So... now what do I have to do? Get bigger injectors?
I'm really a newbe on the injector part of this car so if I do need to upgrade it can anyone please explain to me what I need to do exactly? I really appreciate it guys~~
Thanks
It says 100% Injector Duty however I heard that this is not a good sign.
So... now what do I have to do? Get bigger injectors?
I'm really a newbe on the injector part of this car so if I do need to upgrade it can anyone please explain to me what I need to do exactly? I really appreciate it guys~~
Thanks
#12
FEED me
iTrader: (26)
Originally Posted by akiratdk
Hey Guys... I took a picture of my peak output from my PFC~~
It says 100% Injector Duty however I heard that this is not a good sign.
So... now what do I have to do? Get bigger injectors?
I'm really a newbe on the injector part of this car so if I do need to upgrade it can anyone please explain to me what I need to do exactly? I really appreciate it guys~~
Thanks
It says 100% Injector Duty however I heard that this is not a good sign.
So... now what do I have to do? Get bigger injectors?
I'm really a newbe on the injector part of this car so if I do need to upgrade it can anyone please explain to me what I need to do exactly? I really appreciate it guys~~
Thanks
#13
Rotary Turbo
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Originally Posted by BoostedFd3s
my mods are: Greddy 3 row fmic, koyo radiator, streetport, downpipe, midpipe, rb duals, apexi intake, greddy pullies, pfc + commander tuned for 12psi...
#14
Rotary Turbo
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akiratdk, it looks like you are begging for a blown motor.. I would recommend 1st checking to see if you are boost creeping. Once that is settled and if you are still running at 85-100% injector duty to get 1300cc secondary injectors. There is a lot of information in the forum about where to buy and how to install those. BTW, nice pic of the PFC.
#17
In the Garage
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Yeah I would definately get a wideband O2 sensor in that thing quick (if you dont already have one) and check out the a/f ratio as stated above. But really in all honesty some of the best advice is to reinstall the stock cat or hf cat. Another thing you may do is adjust the boost setting in the Pfc. pull it down to stock boost levels as well, maybe then at least you won't creep so high... One thing is for sure. get this under control or your next thread is most likely to be entitled "Oh no!!!! I think I just blew my motor!!!!!"
#19
Racing Rotary Since 1983
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lots of good advice above re a situation that if not remedied immediately will end badly.
the stock turbos, which i gather you have, should not be run above 14 psi as they cavitate and superheat the air causing you to have less oxygen molecules per volume not more as you increase boost. less power more go boom. not good. you need to get your boost down to 14 or a tad less if you expect your turbos and motor to live.
an easy immediate way to do it is as 007arkman suggests, just bolt on the stock cat.
i see your knock number at 80... that's a sign of bad things starting to happen.
glassman's comment about the "reputation" that fd's have is so on the money. if you do your homework i maintain the fd is lethal on the road/track and quite dependable. all it takes is some homework doing reasearch on this site and effort and you can have one of the best performing road cars ever mass produced.
howard coleman
the stock turbos, which i gather you have, should not be run above 14 psi as they cavitate and superheat the air causing you to have less oxygen molecules per volume not more as you increase boost. less power more go boom. not good. you need to get your boost down to 14 or a tad less if you expect your turbos and motor to live.
an easy immediate way to do it is as 007arkman suggests, just bolt on the stock cat.
i see your knock number at 80... that's a sign of bad things starting to happen.
glassman's comment about the "reputation" that fd's have is so on the money. if you do your homework i maintain the fd is lethal on the road/track and quite dependable. all it takes is some homework doing reasearch on this site and effort and you can have one of the best performing road cars ever mass produced.
howard coleman
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