power FC / datalogit boost control?

[ANVIL]

do you need the boost control kit with the datalogit to control boost or can the datalogit with teh power fc control it for you?

just got the datalogit in this morning and was wondering

[Cjmartz2k]

You need the boost control kit.

[ANVIL]

anyone know where i can pick one up at for a decent price or anyone selling one used?? need one ASAP...

[ANVIL]

i really just need the map/boost sensor so i can have the reading on my fc for tuning... anyone know how to hook one up to the power fc besides buying the whole boost kit?

[240z4u]

You should join the Yahoo forums for the FC datalogit software.

You can use a GM 3 bar map sensor to log boost, I posted it up on the Yahoo board.

Evan

[ANVIL]

really? damn that is some good news to hear! i didnt want to shell out another 350 for the boost kit after i bought the fc, commander and datalogit already, and already have a blitz ebc.

ill look it up when i get home... i joined but never really searched in it.

do you happen to have a link to where you posted it?

[ANVIL]

got the gm 3 bar map sensor on the way, got it for $64 shipped, it was too late for over night so it will be here friday.

part number was 16040749

[Darius]

It is cheaper to go with the boost control kit if you don't already have a decent electronic boost controller. The boost control kit comes with its own map sensor and wiring to connect into the PFC. The boost from a separate map sensor will have to be wired thru the datalogit (or other EMS/logger)control box as an AUX 0-5V input. This also means that you need to know the correlation between the pressure and voltage out output of the map sensor. May or may not be linear. I'm not sure on that part.

[240z4u]

It is cheaper to go with the boost control kit if you don't already have a decent electronic boost controller. The boost control kit comes with its own map sensor and wiring to connect into the PFC. The boost from a separate map sensor will have to be wired thru the datalogit (or other EMS/logger)control box as an AUX 0-5V input. This also means that you need to know the correlation between the pressure and voltage out output of the map sensor. May or may not be linear. I'm not sure on that part.

The main reason I did this was because I already had the 3 bar sensor installed for my alcohol injection. I posted the curve on the power FC forum. I don't remember what it is, you will have to look yourself. My user ID is RB25DETS14 on there.

I used my TPS +5v to power it. I am changing it to use a little 5v regulator that they have in stock at rat-shack.

Evan

Darius, I agree its best to do the boost control kit if you don't have an EBC already. FYI, there is a thread on the FC forums on how to use a different boost solenoid besides the Apexi one.

[Darius]

Sweet! Nice work. I haven't been keeping up on the datalogit usergroup mostly because people either have the same stupid questions or they have questions regarding tuning theory that is over my head and I can't really read it.

[ANVIL]

ok after playing around, i think I have it, but not sure until the sensor gets here and i actually try it out

but i power the sensor with 5v (tps sensor easiest place to get 5v?) and ground it, and the 3rd wire goes to my datalogit box. lets say i run it to AN2. then i go into setup auxilary menu and enter

Volts Value Unit1.58 0 PSI4.01 22.5

what about that poly box? do i need to do anything else or should that be all that i need to do boost logging?

[gawdzilla]

ok after playing around, i think I have it, but not sure until the sensor gets here and i actually try it out

but i power the sensor with 5v (tps sensor easiest place to get 5v?) and ground it, and the 3rd wire goes to my datalogit box. lets say i run it to AN2. then i go into setup auxilary menu and enter

Volts Value Unit1.58 0 PSI4.01 22.5

what about that poly box? do i need to do anything else or should that be all that i need to do boost logging?

i dont think you need to worry about the poly box if you only have 2 data points. linear you can just put in those 2 values. things like widebands you need to use the poly box to get a 2nd degree curve to closer approximate your values

[ANVIL]

will it read vacuum also? or will it only read positive numbers?

[240z4u]

Gawdzilla, it IS linear.

Yeah, it will show you vac. as well.

Evan

[ANVIL]

what color wire is the 5v on the tps?

[240z4u]

what color wire is the 5v on the tps?

No idea, get out the pinout and take a look. OR you could use a multimeter?

[ANVIL]

do u know if the gm 3 bar map sensor would work with the boost kit map sensor harness? i found out u can get the harness that plugs into the fc for around $40 from nengun. they also have the sensor but its like $150. id like to do that, for a cleaner install and i could read boost from the hand controller too that way.

[240z4u]

do u know if the gm 3 bar map sensor would work with the boost kit map sensor harness? i found out u can get the harness that plugs into the fc for around $40 from nengun. they also have the sensor but its like $150. id like to do that, for a cleaner install and i could read boost from the hand controller too that way.

Doubtful.

[ANVIL]

wired it up like i posted and im not seeing anything on the map watch.... am i supposed to do something else??

[ANVIL]

nevermind, i figured it out, i didnt have the Aux A/D box checked in the montor window.

is the lowest vacuum reading it can read -11? becase at idle it reads -11 even though on my boost gauge its -16 to -19

[240z4u]

Thats about the lowest mine reads too. Sounds like its working fine.

[ANVIL]

just wanted to thank u 240z4u. this helped me out a lot, and saved me from buying that $350 boost kit!

now hopefully i can get my car tuned finally

[240z4u]

just wanted to thank u 240z4u. this helped me out a lot, and saved me from buying that $350 boost kit!

now hopefully i can get my car tuned finally

Your welcome dude, glad you got it sorted out!

Evan