Power FC Apexi Power FC boost controller kit
06-27-12, 10:18 PM
#27
i have the solenoid and nothing else. since i'm not running more than 17psi is the 3 bar map sensor necessary? also, with the solenoid hooked up and plugged in, will the power fc recognize it?
and i have no idea how to use it either... when i set boost through the commander or datalogit, does it just work through the solenoid?
and i have no idea how to use it either... when i set boost through the commander or datalogit, does it just work through the solenoid?
06-29-12, 01:38 PM
#28
i have the solenoid and nothing else. since i'm not running more than 17psi is the 3 bar map sensor necessary? also, with the solenoid hooked up and plugged in, will the power fc recognize it?
and i have no idea how to use it either... when i set boost through the commander or datalogit, does it just work through the solenoid?
and i have no idea how to use it either... when i set boost through the commander or datalogit, does it just work through the solenoid?
https://www.rx7club.com/3rd-generation-specific-1993-2002-16/free-power-fc-single-turbo-probably-nonsequential-boost-control-846883/
https://www.rx7club.com/single-turbo-rx-7s-23/long-term-testing-power-fc-single-turbo-boost-control-900599/
It works great, ive been running it for a couple years now with the optional toggle switch setup for on the fly switching between 2 boost settings.
10-11-12, 10:53 PM
#29
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From what i have read and come to understand, this is not true. You leave the check mark in the sequential twin turbo box. If you remove it your boost control solenoid will do nothing but having you hit boost cut. You are essentially tricking the power fc into thinking that it is controling a sequential twin turbo setup. So there are primary and secondary boost settings in both the position 1 and 2. Both of the pressure and duty cycle settings need to be the same in each of the respective settings. Ie primary and secondary in position 1 need to be the same and both the primary and seccondary need to have the same values in position 2. Position 1 and position 2 can have different values.
10-13-12, 10:20 AM
#30
Just to clarify somethings.
The actual boost controller kit, the one Apex'i sells, has an additional MAP sensor and a harness that plugs into the side. I've never actually used this kit. It's expensive and I just never bothered. Maybe it works to turn off sequential turbo control with that exact kit.
The method I proposed works differently. As mentioned above, it tricks the PFC into thinking you are running sequential turbos with a low transition point. You have a lot of options as far as MAP sensors and solenoids when you use this method.
The actual boost controller kit, the one Apex'i sells, has an additional MAP sensor and a harness that plugs into the side. I've never actually used this kit. It's expensive and I just never bothered. Maybe it works to turn off sequential turbo control with that exact kit.
The method I proposed works differently. As mentioned above, it tricks the PFC into thinking you are running sequential turbos with a low transition point. You have a lot of options as far as MAP sensors and solenoids when you use this method.
07-08-13, 06:48 AM
#31
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Hi all, I have done a bit of searching as I am struggling to understand what is happening here but I just can't figure out what is happening. I am trying to install the Apexi Boost controller kit into my 02 FD as it is booked in to be tuned in a couple of days. I am doing the install myself but a rotary shop is going to be doing the tune. So I want to be sure this is correct before I send the car there and start clocking in dyno time, to say I'm a little confused would be an understatement.
Background: Car has previously been running a Power FC with a catback on the Apexi base map quite happily for probably 12 months now. Last week I installed a Greddy v-mount with the pod filter intake kit, Put a couple of hundred k's on the car to make sure everything was functioning correctly and to my joy it was! I called my tuner and booked the car in as I just want to be sure everything is correct.
Car was boosting correctly and transitioning fine but I did notice a slight fluctuation in boost high in the rev range, Which I half expected as I had read this was likely with the pods and the exhaust. As I had an Apexi Boost Control Kit already sitting in my living room, I set about installing it thinking it should sort out the fluctuations but now I am having some problems trying to get the boost under control.
Problem: I don't think the secondary turbo is working since installing the EBC. In the current config I get 0.8 until 4500ish, Then it tapers off to 0.5. I have the factory MAP sensor plugged into the side of the PFC, I have the 3 bar MAP sensor plugged into the factory location and connected into the manifold after the throttle body. I have plugged the Apexi solenoid into the pre-control solenoid plug and unplugged the wastegate control solenoid(this differs from the instructions as they clearly show the wastegate solenoid still plugged in, trying this though resulted in a massive overboost). I have the COM port on the Apexi solenoid connected to the pre-control and wastegate actuator's via a tee piece. I have the NO port connected to the two nipples on the bottom of the Y Pipe and tee'd together. I have also gone into the PFC and changed Sequential Boost Control to Off and changed PIM to Option 1.
I have also tried plugging the Apexi solenoid into the wastegate solenoid plug, both with and without the pre-control connected and both resulted in a big overboost, The only way I can get any control over the boost at all is to connect the EBC to the pre-control and disconnect the wastegate solenoid completely.
If the setup is correct and it simply needs tuning that is alright as the car is going in on Wednesday for the tune, I am seriously worried though that something is not right here and my tuner could waste a lot of time troubleshooting. I can't figure out why the secondary seems to not be working, but the more reading I'm doing the more confused I'm getting. I have checked the vac routings several times as I believed this to be the issue but I am certain they are correct and attached. Worst case scenario I can always remove the boost control kit, But will the tuner be able to keep the boost under control with the factory sequential solenoids?
Sorry for the blocks of text, I am struggling to get my head around this though
Cheers
Aaron
Background: Car has previously been running a Power FC with a catback on the Apexi base map quite happily for probably 12 months now. Last week I installed a Greddy v-mount with the pod filter intake kit, Put a couple of hundred k's on the car to make sure everything was functioning correctly and to my joy it was! I called my tuner and booked the car in as I just want to be sure everything is correct.
Car was boosting correctly and transitioning fine but I did notice a slight fluctuation in boost high in the rev range, Which I half expected as I had read this was likely with the pods and the exhaust. As I had an Apexi Boost Control Kit already sitting in my living room, I set about installing it thinking it should sort out the fluctuations but now I am having some problems trying to get the boost under control.
Problem: I don't think the secondary turbo is working since installing the EBC. In the current config I get 0.8 until 4500ish, Then it tapers off to 0.5. I have the factory MAP sensor plugged into the side of the PFC, I have the 3 bar MAP sensor plugged into the factory location and connected into the manifold after the throttle body. I have plugged the Apexi solenoid into the pre-control solenoid plug and unplugged the wastegate control solenoid(this differs from the instructions as they clearly show the wastegate solenoid still plugged in, trying this though resulted in a massive overboost). I have the COM port on the Apexi solenoid connected to the pre-control and wastegate actuator's via a tee piece. I have the NO port connected to the two nipples on the bottom of the Y Pipe and tee'd together. I have also gone into the PFC and changed Sequential Boost Control to Off and changed PIM to Option 1.
I have also tried plugging the Apexi solenoid into the wastegate solenoid plug, both with and without the pre-control connected and both resulted in a big overboost, The only way I can get any control over the boost at all is to connect the EBC to the pre-control and disconnect the wastegate solenoid completely.
If the setup is correct and it simply needs tuning that is alright as the car is going in on Wednesday for the tune, I am seriously worried though that something is not right here and my tuner could waste a lot of time troubleshooting. I can't figure out why the secondary seems to not be working, but the more reading I'm doing the more confused I'm getting. I have checked the vac routings several times as I believed this to be the issue but I am certain they are correct and attached. Worst case scenario I can always remove the boost control kit, But will the tuner be able to keep the boost under control with the factory sequential solenoids?
Sorry for the blocks of text, I am struggling to get my head around this though
Cheers
Aaron
07-08-13, 09:49 PM
#32
Wait, does the car still have stock sequential twins?
If you have stock sequential twins and you want to control boost with a PFC, you want one of two arrangements:
1) two stock solenoids hooked up as regular 2 port bleeders. Since you have a 2002 you should have a restricter orifice built into compressor outlet if I remember correctly.
2) two aftermarket 3 port solenoids hooked up like the Apex'i instructions.
Easiest thing for you to do right now is go back to stock. If your tuner knows what he's doing, he should be able to tune the boost control solenoid duty by looking at the solenoid duty curves "Advanced WG%" and "Advanced PC%" as well as boost and rpm.
If you have stock sequential twins and you want to control boost with a PFC, you want one of two arrangements:
1) two stock solenoids hooked up as regular 2 port bleeders. Since you have a 2002 you should have a restricter orifice built into compressor outlet if I remember correctly.
2) two aftermarket 3 port solenoids hooked up like the Apex'i instructions.
Easiest thing for you to do right now is go back to stock. If your tuner knows what he's doing, he should be able to tune the boost control solenoid duty by looking at the solenoid duty curves "Advanced WG%" and "Advanced PC%" as well as boost and rpm.
07-09-13, 03:22 AM
#33
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Thanks for the reply arghx, Yep it does still have the sequential twins. I have returned it to stock and removed the Apexi boost control kit. Thanks for clearing that up, the thought had crossed my mind a couple of times but I kept thinking it was more likely I had installed it incorrectly.
