Tuning PFC
07-19-18, 06:43 PM
#1
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Tuning PFC
Hi, I wet single turbo on my 93 FD. Aem 320 lph fuel pump, v-mount intercooler, Turbonetics 5457 (not the biggest), greddy boost con (profec e-01), PFC, 3” exhaust system, wide band ASPX v2, std injectors, knight sports throttle and all solenoids were deleted.
So, the rpms are unstable (goes up and down), when there is a sudden acceleration fuel cut occurs, there’s so much fuel going into the engine (in my country we call it drowning). Cutting the blabla, there’s nobody qualified to tune a RE in my country, so I must fix it my self, could somebody send me photos of the setting of a tuned PFC with similarities!? Please, I just need where to start!
So, the rpms are unstable (goes up and down), when there is a sudden acceleration fuel cut occurs, there’s so much fuel going into the engine (in my country we call it drowning). Cutting the blabla, there’s nobody qualified to tune a RE in my country, so I must fix it my self, could somebody send me photos of the setting of a tuned PFC with similarities!? Please, I just need where to start!
Last edited by ericondazo; 07-19-18 at 06:44 PM. Reason: Miss spelling
07-19-18, 09:05 PM
#2
You really should have put some more thought into this. Sounds like you set yourself up for failure. Go into the power fc section of the forum and read up. There's a tremendous amount of info in there. More than likely no one is going to HAND you a solution especially when the damage is self inflicted. Do some reading and try to figure the stuff out and ask for help on specific things you don't understand.
07-25-18, 03:34 AM
#4
Hi, I wet single turbo on my 93 FD. Aem 320 lph fuel pump, v-mount intercooler, Turbonetics 5457 (not the biggest), greddy boost con (profec e-01), PFC, 3” exhaust system, wide band ASPX v2, std injectors, knight sports throttle and all solenoids were deleted.
So, the rpms are unstable (goes up and down), when there is a sudden acceleration fuel cut occurs, there’s so much fuel going into the engine (in my country we call it drowning). Cutting the blabla, there’s nobody qualified to tune a RE in my country, so I must fix it my self, could somebody send me photos of the setting of a tuned PFC with similarities!? Please, I just need where to start!
So, the rpms are unstable (goes up and down), when there is a sudden acceleration fuel cut occurs, there’s so much fuel going into the engine (in my country we call it drowning). Cutting the blabla, there’s nobody qualified to tune a RE in my country, so I must fix it my self, could somebody send me photos of the setting of a tuned PFC with similarities!? Please, I just need where to start!
#2. It may not be strictly a tuning issue. Hunting idle...if that's what you're describing, is often just a vacuum leak.
#3. With your time and post count I think you can move out of the NEW MEMBER section and post a question in the 3rd Gen Technical Section for a wider audience. A mod could move the thread.
07-27-18, 07:50 AM
#6
You need to know more about the fuel needs of your turbo. The standard injectors really won’t support a single turbo upgrade unless you run very low boost which in my opinion defeats the purpose.
You need a Datalogit to make adjustments on your Power FC. These can be purchased in various places. A Wideband O2 sensor that you can run in the Downpipe and connect to the Datalogit via analog Inputs so you can Datalog your air fuel ratio, injector duty cycle, Intake air temps etc.
You got way ahead of yourself on this build. You will need to dedicate yourself to learning how to tune the car yourself with the Datalogit and a Wideband and you need to start by tuning it in vacuum. DO NOT run the car in boost until you have learned how to make the tuning adjustments in the map and are competent enough that you won’t blow your motor.
What you may may find is that your turbo pushes more air than your injectors can flow and also fuel cut is probably because you are hitting the default fuel cut boost levels of like 17+ psi. You may have already done irrepribale damage to your motor. It’s a classic case of not knowing what you are doing.
Unfortunately you don’t have a shop near you that can sort this out so you have a steep learning curve. You shouldn’t drive the car again until you have a solid plan for how you are going to fix this.
You need a Datalogit to make adjustments on your Power FC. These can be purchased in various places. A Wideband O2 sensor that you can run in the Downpipe and connect to the Datalogit via analog Inputs so you can Datalog your air fuel ratio, injector duty cycle, Intake air temps etc.
You got way ahead of yourself on this build. You will need to dedicate yourself to learning how to tune the car yourself with the Datalogit and a Wideband and you need to start by tuning it in vacuum. DO NOT run the car in boost until you have learned how to make the tuning adjustments in the map and are competent enough that you won’t blow your motor.
What you may may find is that your turbo pushes more air than your injectors can flow and also fuel cut is probably because you are hitting the default fuel cut boost levels of like 17+ psi. You may have already done irrepribale damage to your motor. It’s a classic case of not knowing what you are doing.
Unfortunately you don’t have a shop near you that can sort this out so you have a steep learning curve. You shouldn’t drive the car again until you have a solid plan for how you are going to fix this.
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