skunks

Hi, i just installed a PowerFc on a friends car and need some help with boost control.

I just read in the PowerFC manual that if you go above 0.25 bar above the perset boost level, it will fuel cut, my question is that what is the preset boost level and can I get rid of the fuel cut all together?
Is the preset boost level the middle of the screen in the boost control screen (the manual says its the "set boost level")? what is the number to the right of those, the base duty cycle right? Is this what I change to adjust the boost levels?

I dont understand why there is a "set boost level" and a "Base duty" setting in the boost control screen, what do they both do? which do I adjust to change boost levels?

also, what does the primary (PR) and secondary (SC) settings do and why are there 2 settings(1 and 2?) does this have to do with some kind of self learning function in the powerfc?


also, what controls boost levels in a non-seq conversion? Right now I have the wastegate solenoids vaccum lines capped and I have the wastegate eletrical connector plugged in to the precontrol solenoid.

jspecracer7

Okay, I bought my PFC used so I don't know what the instruction manual says....However, if you go to the boost portion and it says primary/secondary...that part...the setting you put there is where you will boost cut i.e. 1.00 kilos means that when you get to that boost, your PFC will boost cut will activate. the percentage is how long your wastegate will stay closed i.e. your boost control.

You have it right to connect the wastegate connector to the precontrol solenoid.

Pri and Sec are for the stock twins. Once you go non-sequential, and turn off your sequential settings, you will only need to worry about primary.

skunks

what is the boost cut? is that the same as fuel cut? will the PowerFC keep boost there?

WhiteRXseven

By no means am i an expert on PFC's
but i'll tell you what I know.. Hope it helps.

On the commander when you set boost level.
its actually the " Target Boost level" your pfc
tries to get to, using the "duty cycle" to achieve
those boost levels.. So if you set your boost to.
1.0 which is 14.22, you go out and do runs to get
to 14.22psi(1bar) watch your boost gauge to
see if you get to it higher, or lower. If it doesn't
reach it, then you would set the duty cycle higher
to get to that boost level. The PFC is set to hit
boost cut if you boost over .25bar above what
you set your boost to, which is like like 2.5 psi
above your settings. FYI to convert bar to psi.
Multiply *bar x 14.22. Example .90bar x 14.22 =
12.7 psi. To eliminate the fuel cut, I think all
you have to do is set your boost level high enough
that your car won't reach . BUT is NOT GOOD.
I THINK PFC is onlyable to control boost up to
17psi. which is 1.2 bar.

Primary setting is boost levels with only the primary
turbos, and secondary setting is both turbo setting.

The top set of settings you can use for Low boost.
and second settings for your high boost levels.
You can change back n forth. Just leave the cursor
on which set of settings you want and Prev, out
and its set..

Hope this Helps..

Now any one with PFC what does " DECEL FUEL CUT"
DO????????

thanks

7-sins

The PFC reads boost in Kg/Cm2 but you are converting it right. Other than that Sean has the boost control idea down. Now Fuel Decel cut is what happens when you push the clutch in or downshift ect. Whenever the car is in decel it will cut the fuel until you give it gas or it hits that rpms setting. This should be set right above the idle like it is default. If set higher it wont damage the car but it will pop and **** when in decel, sound like the car is running rich. If you ever want to shoot a flame just turn the decel cut up to 8k and downshift a couple of times.

skunks

thanks for the help,

here's a stupid question, where is the Fuel Decel cut located? is it under the fuel enrichment menu?

7-sins

Settings>Idle/Rev