To Start:

- My current Mods:
DP, MP, High Flow CB, INTAKE, PFC W/ Commander and PFC Boost Control Kit

- Running modified IGL and IGT maps copied from individual with similar mods (His Inj maps was the same). This was a painful process through the commander... I thoought I was going to go blind clicking through the 20x20 maps and changing values one at a time.

- I have Option 1 selected and left sequential enabled (I think... The Japanese for this function on the function setting page looks the same as the others! Ha!)

- AND Yes, I did read the manual and YES I did searches for these questions with no success. Maybe I'm just not searching in the correct places. (This last bullet written to pre-empively deter any "wise-***" comments from some of our most clever gurus).

NOTE: Initially I hooked everything up as per the manual and only got about 3 pounds of boost throughout the rev band (Tried non-sequential as well with about two pounds initially but by redline that dewindled to .5 pounds). After I changed the IGL and IGT Maps I gained about a pound of boost all around. The car felt quickier as well but I suspect that may be because the outside temp was significantly lower than last attempt.

Under the Boost menu regardless of where the boost was set... there was no change (See my previous thread "POWER FC not talking to Boost control kit" for those details).

I suspect that the Boost Menu is not setting boost due to one of the following three possibilities:

1) I left the little screw with the tiny hole in it that you can screw into the NC port of the PFC boost control kit solenoid valve off because the Manual said "NC open to air". So perhaps I should screw that in (Gonna try that now).
2) I have hooked up the boost control kit improperly (I thoink that is unlikely though because then I don't think it should be working at all)
3) I have to screw with some other settings on the POWER FC. I think this is where the problem is... So,
Do I need to change anything under the following tables?
a) Acceler
b) Rev/Idle: (Already changed the F/C's to 7000)
c) IGL/T, Fi (Don't think so because once you turn ingition off this table resets as I understand it)
d) Injector Data
e) PIM Voltages (Don't think so because I'm not running enough boost yet for this to be a problem.)

Please, somebody help me... I'm afraid to mess too much with stuff when I don't know exactly what it will do. The Manual is adequate on telling you how to change things but a little (very) weak on what you should start seeing when you do change things.

Thanks in advance for your help... Please provide a little detail as well if you choose to respond.

 

Screwed the thing into the NC port, no change. I scrolled through all the menus on the power fc and I'm thinking that everything is set up okay... so now perhaps something is set up wrong.
I'm pretty sure I hooked up the solenoid valve correctly... The plumbing looks like the the diagram and I currently have it plugged into the harness without the white mark under the surge tank (But I have the white harness still plugged in... should I unplug it?)

I have the POWER FC sensor plugged in where the old sensor was on the back wall of the engine compartment on the drivers side. And I have the old sensor plugged in to the POWER FC through harness that plugs in next to the Commander. Is that right? Should I unplug the old sensor from the POWER FC altogether?

There also where a few weird things I found under the surge tank? There was a harness not plugged into anything... even before I started doing anything? There also was a vacuum port that was open to the atomosphere without a hose attached to it? Is that correct?

I'm spinning my wheels here (Figuratively... unfortunately not literally). Someone please help. My phone and emails are 904 234 3008 and jenkim1@earthlink.net. Please help.

 

did your boost EVER work? As in before you hooked up the new sensor?

 

I don't have a boost control kit, so I can't help there...

If the unplugged connector you're referring to is blue, it's the EGR connector for CA cars, it's unused on non-CA cars.

There is one vacuum port that is left open on MT cars, check the diagram on this page to see which one:
http://www.geocities.com/MotorCity/G...technical.html

Here's an excellent resource for turbo troubleshooting in general: http://www.autosportracetech.com/RX-...leshooting.htm

Good luck,
Patrick

 

Did the boost ever work...

Yes, The boost worked according to specs when it was stock...

Then I put the DP, MP Catback and Intake on and it hit 16 PSI when it was supposed to be 10 PSI... It hit F/C before REDLINE with the stock ECU. Then I installed the POWER FC and this low boost condition appeared...

 

Oh... This low boost condition happened when the Power FC went on... Before the boost control kit was installed and it was an identical situation after as well.

 

Patrick,
thanks for the explanation. I really appreciate it!
Mike

 

well if things were ok before the pfc then we can rule out a hose or connector. i assume from your posts that you have the boost set correctly, and you should leave the sequential control ON. I also assume you are using custom maps, since you mentioned adjusting timing and injector maps. If I were you, I would revert to the initial map until you fix this problem. Should be fine for your mods until you are up and running. I guess you had no boost after the PFC and this is why you went with the new boost control kit? The only thing I can think of is that maybe some of the wires that need to be clipped were not clipped or were clipped incorrectly. I don't know if you handled the install yourself or if your PFC is new or used. On more q: if you swap your stock ecu back in is boost back?

 

Weaklink,
Thanks for the response... I got a new PFC from Japan with Japanese directions. I did the install myself (But I didn't do anything before I found some directions in English.) Like I said... I'm 99% sure that I installed it correctly, but it would be great if someone gave me a ring (904 234 3008) or stopped by to look into my engine and verify that it is hooked up right or not. I had boost set at the stock settings... then I moved each number on the boost menu to each extreme and it performed exactly the same way (No change!!!) But there is a little bit of boost about 3 pounds now)... I'm sure if I threw the stock ecu back in it would boost normally! I'm stumped... I'm about to sledgehammer test everything for durability!

 

well I only mentioned swapping the stock ecu back in as a way to test your boost control setup. You changed a lot of things at once and now you need to narrow your search to find the culprit. I have not seen the boost control kit, so I do not know if it will interface with the stock ecu. I know it seems like a pain, but if the stock ecu gives you boost, then it was your install of the PFC. If you don't get boost then it's a hose or something. Right now there are just too many variables. Try posting in your region's forum, or look who posts in there. PM someone else that's in Jacksonville or nearby. You could also take it to a rotary shop-it may be something simple that you don't know to look for.

 

also there seems to have been some mixups on the instructions-go here: http://www.scuderiaciriani.com/rx7/p...C_install.html

 

Thanks again for the link... looks like it is pretty in depth... I'm going to have a look at it and then start reconnecting everything in the engine bay!

 

Mike,

What's the status?

B

 

Still no luck... I'm going to check if perhaps there is a blown fuse or something... I have no idea what is going on... I know my engine isn't blown and there wasn't every enough demand on the turbos to screw them up after the installs... I'm stumped!!! I need a lot of help still. Almost begging for a call from a PFC Guru! 904 234 3008!

 

This is a shot in the dark: Did you do any thing to the pills in the precontrol or wg vac lines? Are you supposed to remove them before installing the PFC boost control module?





I've been watching this thread. I have a similar, but different boost problem. I had rebuilt motor and a PFC installed buy local rotary shop. Ever since I 've had the car back I haven't been able to adjust my boost levels.

I have a home depot needle valve to control my Non-sequential tubo's boost. Before the PFC install things were fine. Now, I can only see 8 psi if the valve is wide open. If I try adjusting the vavle incremetally to close off the valve and raise the boost, I get overboost 15 psi+++ until I let off. My PFC boost seq control doesn't seem to effect it either.

 

I set the POWER FC BOOST CONTROL Solenoid up exactly like the AVC-R valve is supposed to be set up. I don't know if that is right... You mentioned "pills" and I don't know what that means (excuse my "lingo" deficiency). The only things I messed with were the items that the AVC-R manual called to mess with (Here's the link so you can see exactly what I did):

www.apexi-usa.com/ productdocumentation/electronics_savcr_ins.pdf

OR

http://www.apexi-usa.com/productdocu..._savcr_ins.pdf

It is the page titled "FD3S Specific hosing diagram"... and then "AVC-R connection diagram"...

My setup is just like the one on page 48 of the actual AVC-R manual or page 52 of 61 according to the acrobat reader.)

Does anyone have English doirections for the POWER FC BOOST CONTROL KIT? I'd like to set it up like I'm suppoosed to set it up instead of like "something similar" is supposed to be set up. I can't do that with these Japanese directions though! Someone with the directions or who really knows how to set it up please help.

 

TRy using the stock solinoid with the pfc boost control and not the apexi one in the kit. We have found a couple of apexi solinoids bad from manufacturer.
The apexi solinoids are real good when they work
We use them on MSBControllers for singles and twin wastegates.

 

TRy using the stock solinoid with the pfc boost control and not the apexi one in the kit. We have found a couple of apexi solinoids bad from manufacturer.
The apexi solinoids are real good when they woek
We use them on MSBControllers for singles and twin wastegates.

 

Tried it both ways... No difference... I'm only getting 3 to 4 pounds of boost thoughout the WOT. Still curious if there is anyone out there with English directions for the POWER FC BOOST CONTROL KIT specifically... If so, please post them or email them to me. Thanks for the inputs so far though. Once I get it nailed down I'm putting an in depth post up so no one else has to go through this.