with these mods do i need pfc or ecu
05-02-04, 09:34 PM
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You need a boost gauge. If the boost is staying at 10 PSI, you don't need anything. If it's spiking, you either need a boost controller to hold it at 10, or an ECU and turn it up!
05-02-04, 09:49 PM
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Originally posted by Little 7
10psi=?bar. and 15psi also
Thanks
10psi=?bar. and 15psi also
Thanks
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05-02-04, 11:47 PM
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i think 14psi=bar. With exhaust, dp, and intake you are adding a lot more air and no more fuel=you are running lean. Not a good thing for our FD's. I wouldnt say you need a PFC for these upgrades, but an upgraded ECU like the Pettit would be a good idea. $400 for an upgraded ECU is cheap insurance for what motor rebuilds are going for these days.
05-03-04, 02:58 AM
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Originally posted by mr g lord focker
With exhaust, dp, and intake you are adding a lot more air and no more fuel=you are running lean.
With exhaust, dp, and intake you are adding a lot more air and no more fuel=you are running lean.
The 3-mod rule was proven false years ago. Unfortunately, it still carries on....
05-03-04, 03:05 AM
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Originally posted by rynberg
Wrong, wrong, and wrong again. It has been repeatedly proven by wideband testing that the stock ecu can handle all the bolt-ons at 10 psi and still be very safely rich.
The 3-mod rule was proven false years ago. Unfortunately, it still carries on....
Wrong, wrong, and wrong again. It has been repeatedly proven by wideband testing that the stock ecu can handle all the bolt-ons at 10 psi and still be very safely rich.
The 3-mod rule was proven false years ago. Unfortunately, it still carries on....
That said EVERY car is different. Watch your boost gauge and if it goes over 10 you may as well bite the bullet and just get a PFC cause you know you want to do more anyways!!
05-03-04, 06:01 AM
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Originally posted by rynberg
Wrong, wrong, and wrong again. It has been repeatedly proven by wideband testing that the stock ecu can handle all the bolt-ons at 10 psi and still be very safely rich.
The 3-mod rule was proven false years ago. Unfortunately, it still carries on....
Wrong, wrong, and wrong again. It has been repeatedly proven by wideband testing that the stock ecu can handle all the bolt-ons at 10 psi and still be very safely rich.
The 3-mod rule was proven false years ago. Unfortunately, it still carries on....
05-03-04, 10:10 AM
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Originally posted by particleeffect
i'm just curious as to how the ECU compensates for the extra flow. i would think that if the fuel map isn't changing, and the air flow is increasing, you would lean out. not that i don't believe it, i just don't understand it.
i'm just curious as to how the ECU compensates for the extra flow. i would think that if the fuel map isn't changing, and the air flow is increasing, you would lean out. not that i don't believe it, i just don't understand it.
05-03-04, 05:17 PM
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Originally posted by rynberg
The stock ecu doesn't compensate. It just runs so pig-rich from the factory that there is A LOT of safety room. My car with d/p, cat-back, intake, and SMIC was still a bit below 11:1 throughout the boost range with the stock ecu.
The stock ecu doesn't compensate. It just runs so pig-rich from the factory that there is A LOT of safety room. My car with d/p, cat-back, intake, and SMIC was still a bit below 11:1 throughout the boost range with the stock ecu.
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