Apexi optional boost control kit..HELP!!!

[bl3ujay07]

Alright, after like 5, maybe 6 months having having this thing (optional boost controll kit with power fc), i still can't figure it out!!! I've been running on the wastegate for a while and trying to figure it out.

Here is how i have my kit connected:

Map Sensor
[Power FC]----[Map Sensor]----[Filter]----[tee to fuel pressure vac]

Valve (power and grounded already of course)
[Valve]--[COM]--[wastegate]
|
|
[NO]--[tee with bov]--[vac/nipple on tb]


Thing i dont understrand is, why isn't there anything connecting the map sensor to the valve, or something so that something can actually know how to controll the boost? am i suppose to use the other hole on the valve for something else, maybe connecting it to the map sensor?

Is the really just suppose to be power and ground? If so, how will it get a signal from the power fc to controll the boost then? :wtf:Does it require the use of the stock boost valve (or whatever its called) that suppose to come stock on sr's?

Please help me out!!!!

[slider2828]

On the side of the Power FC, there is a port for the boost controller right? There should be a electrical line between the PowerFC and EBC itself.

[slider2828]

Apexi PowerFC FAQ (http://paulr33.skylinesaustralia.com/docs/powerfc-faq/powerfc-faq.htm#38)

Its also on my POWERFC FAQ here

[bl3ujay07]

^^^I have been going and reading through that post. The port is for the map sensor. All the boost controll valve has is a power and ground wire.

[slider2828]

Nooo... you gotta splice it together.... isn't that what it says?

" The solenoid piggybacks off the Pressure Sensor wiring harness which leads to the PowerFC connector port"

[bl3ujay07]

So you have to splice the map sensors power and ground wire, and connect it with the boost valves power and ground?

[slider2828]

yup /................................. Also don't forget to enable boost controller kit after you done with the install which is in the menu of the powerfc....

[bl3ujay07]

^^^Yup...THANKS A WHOLE BUNCH!!! Ill go home after work to try and out and let you know.

[S14DB]

This the MAF or MAP PowerFC?

MAF one the MAP should plug into the port on the side for the BCK and the solenoid into the stock solinoid plug.

[bl3ujay07]

MAF, L-jetro.

The stock solinoid plug, that was what i was refering to on the first post. What if i dont have that, can i still just piggy back it to the map sensor harness slider282?

[S14DB]

Get a solenoid plug off someone that cut it off during the swap and wire it back upto the main harness.

MAP harness plugs into the side of the powerFC.

[bl3ujay07]

So the stock boost solenoid is a must have in order for the boost controller to work then? hm... Other boost controllers like hks ez and greddy profec spec II dont require the stock solenoid does it?

[S14DB]

They assume that you already have the solenoid connector stock. As this was made for JDM. Unfortunately most people that make harnesses in the US snip it off.

It uses the same sensors and logic as the apexi avcr. But, is integrated into the PowerFC.

[fliprayzin240sx]

So the stock boost solenoid is a must have in order for the boost controller to work then? hm... Other boost controllers like hks ez and greddy profec spec II dont require the stock solenoid does it?

Stock boost solenoid is not needed for stand alone electronic boost controllers. They come with everything you need to work and they have nothing to do with the stock harness or ECU.

The boost control kit for the PFC works in conjunction with the PFC. It needs the stock wiring for the PFC to control the actuator valve.

[bl3ujay07]

Well, for future references (if needed), i went with slider2828's solution first bc i dont have the stock boost solenoid. Cut and solder power and ground from the control valve onto the map sensor harness that connects to Power FC and it worked out good.

Boost seems to kick in faster and smoother although i still have to adjust the boost setting a tad.

Thanks again slider2828

[slider2828]

Just double check everything I think s14DB has a good point, but I think you have the 5 wire plug for the PFC, which is kit type 2 which works ok.

So I think it depends which Boost Controller Kit Type # your using, which depends on which plug you have that runs to the PowerFC (3 wire plug or 5 wire plug)....

[bl3ujay07]

Yeah, i have been reading about other people using the stock boost solenoid with the boost kit. I have the three wire plug. Untill i find a stock boost solenoid, ill run it this way for a while.

[S14DB]

You DO NOT run the stock solenoid. You connect the solenoid in the kit to the stock plug on the engine harness.

I didn't know the 5 wire harness worked on the SR20DET Power FC. I thought it ran the 3 wire and the RB ran the 5. My PowerFC has 3 pins on the side.

[RYAN_S-14]

Map Sensor
[Power FC]----[Map Sensor]----[Filter]----[tee to fuel pressure vac]

Valve (power and grounded already of course)
[Valve]--[COM]--[wastegate]
|
|
[NO]--[tee with bov]--[vac/nipple on tb]

!

I dont use the vac line off the FPR for saftey reasons.

honestly the install shoud be easy, when i did the install a long time ago i had a blown fuse in the fuse compartment so the controller did not work...

Also the set up is easy and the boost contreoller should be faster because it holds the valve shut untill the last optimal time thats what the numbers are for on the power FC i forget if larger is open faster or slower you should be able to figure it out on a good street run. Play with it a little i loved my Power FC controller, i heard bad reviews but i liked it.

Also if you want to go the cheaper route you can get the parts and piece them together i.e. get a sylinod from a apexi boost controller or used and i think the pressure sensor is the same from a RX7 or there is som OEM car with it.

I think i paid like 35$ for mine i was i Japan too but still i pieced it together

[Z U L8R]

the intake air temp sensor for the d-jetro is a fd rx7 IAT , the d-jetro map sensor is not the same as an fd rx7 map sensor, however you can calibrate the map settings and use it but i do believe it's a 2 bar irrc which kinda sux. it'd be better to use a 3 bar gm map sensor...but what's the point? if you're gonna spend the money on the d-jetro....get the rest of the d-jetro stuff too.

OPer did you get your boost adjustability working properly or no?

Dave

[Sileighty_85]

For the solenoid wiring
http://zilvia.net/f/tech-talk/223428-power-fc-boost-kit-install-question.html

[RYAN_S-14]

the intake air temp sensor for the d-jetro is a fd rx7 IAT , the d-jetro map sensor is not the same as an fd rx7 map sensor, however you can calibrate the map settings and use it but i do believe it's a 2 bar irrc which kinda sux. it'd be better to use a 3 bar gm map sensor...but what's the point? if you're gonna spend the money on the d-jetro....get the rest of the d-jetro stuff too.

OPer did you get your boost adjustability working properly or no?

Dave

Thanks for clarrifying :bigok:

[fliprayzin240sx]

You DO NOT run the stock solenoid. You connect the solenoid in the kit to the stock plug on the engine harness.

I didn't know the 5 wire harness worked on the SR20DET Power FC. I thought it ran the 3 wire and the RB ran the 5. My PowerFC has 3 pins on the side.


IIRC, they have different part numbers for different years SR20DETs. Its not a 1 kit fit all setup.

[bl3ujay07]

the intake air temp sensor for the d-jetro is a fd rx7 IAT , the d-jetro map sensor is not the same as an fd rx7 map sensor, however you can calibrate the map settings and use it but i do believe it's a 2 bar irrc which kinda sux. it'd be better to use a 3 bar gm map sensor...but what's the point? if you're gonna spend the money on the d-jetro....get the rest of the d-jetro stuff too.

OPer did you get your boost adjustability working properly or no?

Dave

Yeah, after i piggybacked the sensor to to map sensor harness, its working now. now is just a matter of adjusting the boost duty cycle. I was thinking about getting the d-jetro, but i spoke with steve, and decided to go l-jetro. Was going to go with the apexi avcr or the new hks boost controller, but i decided to just go the route and controll all with commander. Plus, i want things hidden as much as possible and didnt want the extra attention with extra gauges or the avcr controllers.

NVM

[RYAN_S-14]

Yeah, after i piggybacked the sensor to to map sensor harness, its working now. now is just a matter of adjusting the boost duty cycle. I was thinking about getting the d-jetro, but i spoke with steve, and decided to go l-jetro. Was going to go with the apexi avcr or the new hks one, but i decided to just go the route and controll all with commander. Plus, i want things hidden as much as possible and didnt want the extra attention with extra gauges or the avcr controllers.

NVM

Im 85% sure you need the apexi one

[bl3ujay07]

I bought the apexi one so i can controll it using the controller yes. At first though, i was thinking of getting a separate boost controll unit, like the apexi avcr.

[RYAN_S-14]

I bought the apexi one so i can controll it using the controller yes. At first though, i was thinking of getting a separate boost controll unit, like the apexi avcr.

i used the power fc controller for over 2 years and did not have over boost issues after the initial install, it worked great, i used 2 setting one low one high boost and there are 4 total. I used the same parts listed in the kit, i had a S-14 with a power FC D-Jetro with boost controller, and a wideband AFR, apexi turbo timer, etc. etc.

[Z U L8R]

sweet :)

i think all the confusion could have been avoided if the damn instructions weren't in japanese :P

bluejay, for all intensive purposes, when you get the time, it would help others if you made a how to DIY thread.

Dave

[RYAN_S-14]

sweet :)

i think all the confusion could have been avoided if the damn instructions weren't in japanese :P

bluejay, for all intensive purposes, when you get the time, it would help others if you made a how to DIY thread.

Dave

here is a link that might help a DIY would definitally help

Apexi PowerFC FAQ (http://paulr33.skylinesaustralia.com/docs/powerfc-faq/powerfc-faq.htm)

[slider2828]

sweet :)

i think all the confusion could have been avoided if the damn instructions weren't in japanese :P

bluejay, for all intensive purposes, when you get the time, it would help others if you made a how to DIY thread.

Dave


Hey ZU, just want to make sure.... most people make this mistake, but its "for all intents and purposes"....

[fliprayzin240sx]

Now I just have to figure out why my fucking control kit started spazzing out. Now its either not controlling boost or itll spike up to 2.2 bar.

[RYAN_S-14]

Now I just have to figure out why my fucking control kit started spazzing out. Now its either not controlling boost or itll spike up to 2.2 bar.

you got the numbers on the boost controller screen all messed up (to high of to low)

read this site it tells you how to set it: Apexi PowerFC FAQ (http://paulr33.skylinesaustralia.com/docs/powerfc-faq/powerfc-faq.htm#50)

[Z U L8R]

Hey ZU, just want to make sure.... most people make this mistake, but its "for all intents and purposes"....

i never knew that lol thank you :bowrofl:

Dave

[bl3ujay07]

bring this thread back. I stand corrected, boost controller issue still not fix. Boost up to 1.15 bar but no more, no matter how high i set the duty cycle. I guess i need the stock boost solenoid plug.

[s13silvia123]

bl3ujay

can you post some pics up so i can install it as well. this trouble me the same as you for the last 3-4 years i since i had the boost controller. i'm still having the same problem as you. I too dont have the stock soleniod as well. please.

thankyou

[slider2828]

i never knew that lol thank you :bowrofl:

Dave

LOL rather get corrected here... I got corrected in a meeting... I felt embarassed lol...

[bl3ujay07]

bl3ujay

can you post some pics up so i can install it as well. this trouble me the same as you for the last 3-4 years i since i had the boost controller. i'm still having the same problem as you. I too dont have the stock soleniod as well. please.

thankyou

I will, as soon as i can figure it out after some new test. After soldering up and piggy backing the boost valve to the map sensor power and ground, it holds boost up to 1.15 bar only.

[bl3ujay07]

Ok, so the problem. No matter how high i set the boost duty cycle setting to (first 30, now 86), it still wont boost any different! All i can get is 1.15 bar, and thats just sometimes. The only difference, it boost up faster than just running off the actuator and does not boost boost pass 1.15 bar, even tho i have the boost setting set to 1.25 bar.

Quick question to people that are ABLE to run the boost controller, what is your boost duty cycle value set at? Ill post pics tomorrow about what i did and such tomorrow on piggy backing the valve off the map sensor.

[bl3ujay07]

Damn, double post. Is it just my computer connection or is it the website that is a bit slow?

[S14DB]

What turbo are you trying to get upto 1.25bar?

[bl3ujay07]

I am running a gt2871r. Boost needs to go up when i am at the track.

[steve shadows]

This is a common issue with the integrated boost solenoid kit on many EMS.

Espeically with the internal wg. If you have an internal WG with an adjustable arm then I would try to tighten the arm so it's shorter and pre-loaded more. This will force the wg to hold tighter towards the beginnig of rolling into boost.

Otherwise you might want to look into other more serious dual solenoid type 3rd party boost controllers.