yy4u

Hey just curious if this was possible, or if i needed to upgrade to a Haltech or the new AEM if i wanted to run more than 17psi.

If you are running more than 17psi, did you have to change your maps and steal cells from the vacuum side or something in order to add them to the boost side or something to this effect. Also, is the PFC compatible with a 3 bar map sensor. If so could someone give me a tutorial or link to one or a brief explanation of how to do the install. Do have to make an adjustment on the PIM settings? Does one of the 4 options other than normal correspond to a 3 bar map sensor? Can i do the switchover without a dataloggit or PFC authorized distributer (i.e. XS in Cali)

Thanks for the info guys

-Rob

artguy

the pfc is compatible with a 3 bar and you need to get the boost control package for the pfc from xs engineering..I think xs sells both.

Ill be running that setup within the next 30 days so that i can boost 20lbs on the high end.

beast from the east is getting the setup as well...once we have our hands on it we can share the info...any info you dig up would be appreciated.

good luck

j

maxcooper

The limitation is the factory MAP sensor, which only reads to 17.2 psi (reported). Mine tops out at 1.15 kg/cm^2 or whatever the units are (observed). The PowerFC should be fine running more boost with a different MAP sensor.

-Max

yy4u

artguy - what does the xs boost control package include, is it just the APEX boost control kit for the PFC, if so, that allows the PFC to control boost , but the cost is $400+. I'd rather spend that money on a profec B and be able to more easily switch between high and low boost. It also seems like a separate boost controller is a more common settup. I don't know of many people using the PFC to control boost.


Max- but on the fuel maps i thought the last row or last column or whatever corresponds to boost corresponds to 1.2 kg/cm^2 and thus anything over that would use the last available cell? Is that not the case?? Obviously with more boost you need more fuel right.

BTW - mine tops out at 1.15 also

Thanks for the responses guys, keep the info coming!!

-Rob

artguy

dave at kdr told me that the stock map sensor is good for 16.3lbs of boost.

I have no idea what the pfc boost package comes with...It sounds like the profec b is the way to go.

anyone know any other shops selling the 3bar map sensor kit?

j

yy4u

I don't know what happenned to other posts in this thread, looks like the whole board lost like a day's wroth of posts ro something, but anyway, i still have questions and it appears no one has answers:

Is anyone CURRENTLY running over 17psi with a PFC???

Does anyone know what the deal is with fuel and ignition maps. As far as i know the last row or column on the maps is for 1.2 bar, and some sort of change must be made to run over 17psi. Has anyone done this? Does anyone know someone who's done this?

I can't possibly be the first person who wanted to run over 17psi with the PFC.

Maybe i'll just get a Haltech.

Thanks for any help guys!!

-Rob

Mr rx-7 tt

iTrader: (5)

Actually 1.2 bar which is 16.64 lbs.

yy4u

yeah and mine actually won't read over 1.15bar, tahts the peak it reached when my mechanical boost gauge said 19psi (needless to say i was running a little lean for moment or two.)

yy4u

ANYONE?????? ANYONE AT ALL????? There's got to be someone........

DavidDeco

Re post this on the PowerFC forum. There's plenty of guys running 18psi+ that can help you.

I've run 16psi on my stock turbos but you don't want to hear about that

By the way, how is 1.2 bar 16.6 psi???? More like 17.4 no?

DavidDeco

Re post this on the PowerFC forum. There's plenty of guys running 18psi+ that can help you.

I've run 16psi on my stock turbos but you don't want to hear about that

By the way, how is 1.2 bar 16.6 psi???? More like 17.4 no?

yy4u

yeah i think 1 bar is ~14.55psi so 14.55 x 1.2 = 17.46

atmospheric pressure: 1 atm = 14.7psi = 1.013bar

spigot

iTrader: (4)

I havn't done it but I know the datalogit allows you to change the values of the boost VS rpm, so in essence you could change the boost settings to whatever you wanted, in this case you would loose some resolution since you would be using a wider range. (20 cells for 16 lbs, or 20 cells for 20lbs... 0.8lbs per cell vs 1lb per cell)

As fas as I know there is no way to change these without the datalogit or the apexi software.

Matt

Van Sema

iTrader: (1)

So the answer is it's not possible?

I was hoping the PFC could handle more than 17 lbs ... what would be required to run more than that?

artguy

basically...you need a profec b or other and the 3bar map sensor.

the pfc controls boost like my gramma controls her bowel movements....I dont think they make a diaper big enuff for your rx though.

Ive had really poor luck tuning for over 15-16lbs with the pfc...its just not a good unit for that.

good luck.

j

Van Sema

iTrader: (1)

What a bummer ... I had planned on getting the profec b. But i had no clue that a 3bar map sensor was necessary for the PFC.

What unit do you suggest for running 15lbs+, and still be able to pass emissions? (on a low boost setting of course)

trigeek37

couldn't you just get a profec-b, blitz sbc-id or whatever boost controller you wanted and just set that to your desired level of boost? I planned on doing this... is it not possible?

artguy

you need the map sensor no matter what you run...the profec b is the most accurate according to people around here and the stock map sensor farks up once it passes 16lbs

j

trigeek37

ok, what is a map sensor? I am confused.... (yeah, it happens a lot)

vosko

iTrader: (4)

its a sensor that tells the ecu how much boost you are running. GM made a 3 bar that everyone uses, haltech, pfc, etc

trigeek37

I am running a pfc, so I am assuming I already have one? I was planning on getting a sbc-id very soon, is there something I need to do before I install it? I don't plan on running more then 1 bar anytime, if that makes a difference. I just want to be able to dictate how much boost I am running at the touch of a button.

btw, I know three or four people that are (and have been for a while) the blitz sbc-id for some time now, and all have recommended it to me. granted none of them drive fds, but should that matter?

Van Sema

iTrader: (1)

Well, it is a good unit ... but expensive.

The profec b does the same job reliably and is cheaper. That's why i chose it over any other.

DavidDeco

Now I'm confused too. If you have the Profec B do you need a 3 BAR MAP sensor????

Van Sema

iTrader: (1)

From what i understand (from reading this thread) YES.

The PFC only recognizes up to 15-16lbs of boost. Above that, you need a 3bar map sensor.

trigeek37

so if you are planning on running 1 bar max of boost you don't need a map? and what exactly is a map and where is it stored? (the ecu I am assuming?)

and the reason I am going with the blitz is cause it looks cooler, performs just as well, and I have the blitz power meter thing.