Can not get an answer in PFC section....built in restrictors?
 

Well I cant get an answer in the PFC section...

Here is my thread

https://www.rx7club.com/power-fc-forum-47/more-repeated-pfc-questions-886069/

basically I dont have restrictor pills so I assume I have the built in ones.

I am wondering if I can run the PFC with out drilling the restrictors out?

Also when I first installed the PFC my knock bar was normally full...I did not look at the knock %. Only had it in for short time. When installed idled fine, ac works, fans work, sensor fine.

I didnt record the knock but from what I remember it was full for just cruising and under acceleration above 2500-3k rpm.

I had a mbc which I beleive is what caused me to over boost to 15. I removed the controller but I have not installed the pfc again. I wasnt over boosting with the mbc and stock ecu so not sure why it did. I thought that if you had built in restrictors and you installed a mbc it would not operate correctly?

Is it ok to keep the pfc in it with base map or should I mail it off for a tune?

I can not tune it in car cause my second turbo is shot so know high rpms for me...just driving easy until can save enough for single turbo conversion.

My mods are in my sig. sorry so long...post with questions ...may have left something off or not checked it...

Thanks for looking!

As long as you block the solenoid side of the actuators (which you have to do for any non-stock boost controller except the needle-valve type, anyway - did you do this?), boost control will still work. However, there may be a small delay in actuator response due to the restriction. The delay will be less than if you had the pills in the hoses, because there is less (hose) volume to fill after the pills.

well i havent touched the precontrol act. hoses but the prim one in new and no pill in it. I had my mbc hoses wrong so put it back to stock...

with no pill or mbc i hit 10psi spike to 12psi depending on conditions...so i would like to install the pfc but not sure if can with base map, knock reading and built in restrictors...

if you've got a blown secondary turbo, why does this matter if you're barely boosting it? run lines directly to the wastegate and precontrol actuator, bypassing the solenoids altogether.

i dont want to install the mbc again just need to know about the pfc?? Can it be ran with the restritors?

Knock ok?

You have a blown secondary turbo. You don't need a boost controller at all, manual or electronic, whether you have restricters or you don't. So run pressure to both actuators and then cap off the nipple that would go to the factory solenoid.

The PFC doesn't know and doesn't care what you have in terms of plumbing. It just cycles the two solenoids on or off--hell, it doesn't even care what solenoids you have really. You can use stock ones, you can use GM solenoids, you can use AEM/Haltech/MAC solenoids, you can use Greddy/Apexi/Denso solenoids--they're all very similar electrically. But again, none of this matters because you have a blown turbo. You don't need any boost controller at all. Not a factory one, not an aftermarket manual one, not an aftermarket electronic. Boost controllers can only raise boost. You just need direct pressure to the wastegate/precontrol actuators so that they will still open. The factory solenoids bleed away some of that pressure to raise boost.

If you are concerned about restrictor pills, just source pressure from somewhere else. And I wouldn't worry about the knock indicator, it does not necessarily mean anything.

well i no i dont need a mbc or ebc that why i removed it... was just wondering if pills/built in restrictor made any difference on the pfc.

Thanks for replies.

Should i use the stock base map or send it for adjustments or stay stock ecu until intercooler/single?

just don't boost it. in fact, don't drive it all that much. drive a more fuel efficient car and use the money you saved to help you pay for the parts you need.

as far as the restricters affecting things, well you can source the pressure from somewhere else.

????????

Aren't the built-in restrictors built into the PC and WG actuator nipples? That would be at the end of the boost control circuit, not a pressure source.

Dave

Yes you can use the PFC to control boost with the restrictors.

- Sandro

this is my DD I have other toys so got to drive it ...its the best i got.

No idea

Thanks

I have never seen a car with the built-in restrictors, but I was under the impression that it is not the case. I have two sets of PC/WG solenoids and I don't see anything.

The restrictors are built into the later N3C1 turbos. I believe they were stock on '95s and on any newer sets of turbos.

The restrictors are built into the 2 nipples coming off the compressor housing.

If you're not sure if you have the later turbos, the early N3A1 turbos have green wastegate actuators and the little stamp label on the secondary turbo's compressor housing has N3A1. The N3C1 turbos have gold colored wastegate actuators and N3C1 on the secondary housing. If you see N3G1, that's the '99+ 280hp turbos :).

With the restrictors built into that nipple, you have to either drill them out or remove the nipple entirely. On turbos that will be used with an aftermarket boost controller I remove the stock 2-port nipple, drill and tap the hole it was in for 1/8" NPT, and screw in a brass fitting with 1 nipple. No need for that second nipple with an EBC, just something to cap and the cap can come off.

Dale

Dale answered that above - I appears I was wrong and you were correct.

Dave

ok i installed the pfc...
1)my knock is 160 range
2) i turned down boost so 10 spike to 11 occassionaly...do i need to change boost duty? or is stock duty fine?
3) anything i need to change with base map to run safe?
4) my second turbo is working fine once i removed the mbc.
5) I plan on doing single turbo so I need a map for DD on current setup
6) I read to add 10-15% fuel from lines p14 and up (2k rpm and up) do i need to do this? 10-15 on current number in cell? p14 and up mean higher number?
7) injector duty is 73% at max
8)idles fine

http://hphotos-snc3.fbcdn.net/hs501...._1786894_n.jpg

I wrote in a text box and circled were restrictors are in mine