Boost setting with FC Commander?
13 July 2006, 02:50 PM
#1
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Boost setting with FC Commander?
how do I set the boost with my FC Commander on my 98 type R?
My mapper has the boost set at 1.35BAR which I dont really want that hi.
My mapper has the boost set at 1.35BAR which I dont really want that hi.
13 July 2006, 03:35 PM
#2
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isnt there 4 setting in the settings menu under boost? i think u just flick between them unless u have a boost controller seperate which i think u need for that much boost (e.g. avcr)
13 July 2006, 04:28 PM
#3
The Apexi PFC can control boost that high as long as you are using a 3 bar map sensor. You need to fit one of these to earlier cars to allow boost over 1.1bar (or use an external method of controlling the boost as you correctly said). I used the Apexi boost control kit in conjunction with the PFC to allow boost control above 1.1bar.
13 July 2006, 04:33 PM
#4
A picture paints a thousand words apparently....
Under settings/boost you will have the above menu with 4 different levels. Set the 4 different boost settings that you want to use. Then to select the level, just highlight value 1-4. You can see I am using number 4, 1.3Bar. The third column represents wastegate duty cycle and I have no idea what the 4th column represents but it's not user changeable anyway
Under settings/boost you will have the above menu with 4 different levels. Set the 4 different boost settings that you want to use. Then to select the level, just highlight value 1-4. You can see I am using number 4, 1.3Bar. The third column represents wastegate duty cycle and I have no idea what the 4th column represents but it's not user changeable anyway
Last edited by theotherphil; 13 July 2006 at 04:35 PM.
13 July 2006, 04:37 PM
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didnt you think to ask your mapper to turn the boost down a touch if you werent happy?
you may want to get the map looked at with your new boost threshold as if it hasnt been mapped in those load zones then you're relying on interpolation
you may want to get the map looked at with your new boost threshold as if it hasnt been mapped in those load zones then you're relying on interpolation
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13 July 2006, 09:18 PM
#8
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Originally Posted by Peanuts
didnt you think to ask your mapper to turn the boost down a touch if you werent happy?
theotherphil, thanks for your reply with the pic. I was in that boost setting before I posted but I must have done something wrong as it didnt save the setting I made to number 4.
13 July 2006, 10:26 PM
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1.35bar is not too much for a vf28 if it's only in the midrange. You will probably find that even though the boost is set at 1.35 bar, and it will more than likely reach that figure, that it will be steadily dropping off with increasing RPM. Probably to no more than 1.2 bar by 6500RPM.
If you want to drop the boost level, scroll down to the 1.35bar setting (no4 I assume) and use the right key, it should now highlight the boost level. Use the down key to reduce the boost setpoint, and then use the right key to highlight the duty cycle. Drop it by about 2 to start with, and see what sort of peak boost you hit after a few pulls in say 4th gear.
If you want to drop the boost level, scroll down to the 1.35bar setting (no4 I assume) and use the right key, it should now highlight the boost level. Use the down key to reduce the boost setpoint, and then use the right key to highlight the duty cycle. Drop it by about 2 to start with, and see what sort of peak boost you hit after a few pulls in say 4th gear.
14 July 2006, 08:57 AM
#10
Originally Posted by Zen Performance
1.35bar is not too much for a vf28 if it's only in the midrange. You will probably find that even though the boost is set at 1.35 bar, and it will more than likely reach that figure, that it will be steadily dropping off with increasing RPM. Probably to no more than 1.2 bar by 6500RPM.
If you want to drop the boost level, scroll down to the 1.35bar setting (no4 I assume) and use the right key, it should now highlight the boost level. Use the down key to reduce the boost setpoint, and then use the right key to highlight the duty cycle. Drop it by about 2 to start with, and see what sort of peak boost you hit after a few pulls in say 4th gear.
If you want to drop the boost level, scroll down to the 1.35bar setting (no4 I assume) and use the right key, it should now highlight the boost level. Use the down key to reduce the boost setpoint, and then use the right key to highlight the duty cycle. Drop it by about 2 to start with, and see what sort of peak boost you hit after a few pulls in say 4th gear.
I'm running an Apexi-PFC, set to run 1.35bar on a VF28. This is running about 64% duty IIRC.
This drops to about 1.1bar by 7,000rpm.
08 September 2006, 04:21 PM
#12
PFC remembering boost settings ?
Do you have to tell the PFC to control boost ... I had external boost controller ( so PFC wasn't controlling boost and that feature may have been turned off ? ) and now currently have just OEM piping to oem 3 port solenoid.
PFC didn't seem to change boost max by that menu for me, although PFC is controlling boost to about 1 bar.
Ta
Neil
PFC didn't seem to change boost max by that menu for me, although PFC is controlling boost to about 1 bar.
Ta
Neil
09 September 2006, 11:55 AM
#13
Originally Posted by vulnax999
Do you have to tell the PFC to control boost ... I had external boost controller ( so PFC wasn't controlling boost and that feature may have been turned off ? ) and now currently have just OEM piping to oem 3 port solenoid.
PFC didn't seem to change boost max by that menu for me, although PFC is controlling boost to about 1 bar.
Ta
Neil
PFC didn't seem to change boost max by that menu for me, although PFC is controlling boost to about 1 bar.
Ta
Neil
Neil, yes you do need to tell the PFC to control the boost but I can't remember where in the settings you need to do that. On the early model impreza's, the PFC can only control boost up to approx 1.1bar before you need to change the MAP sensor to read the higher boost. Above this, you will get wastegate pressure only and a CEL will illuminate. You will need the Apexi boost control kit to overcome this problem (or use a manual boost controller)
11 September 2006, 10:07 PM
#14
Hi Phil
Sems the PFC is controlling boost to about 15 - 17 psi ... the only setting I can find is for turning on/off the external Apexi boost control kit, which I dont have ( so I get a CEL light ! ).
AVC-R nearly fitted now, so problem goes away!
Cheers
Neil
Sems the PFC is controlling boost to about 15 - 17 psi ... the only setting I can find is for turning on/off the external Apexi boost control kit, which I dont have ( so I get a CEL light ! ).
AVC-R nearly fitted now, so problem goes away!
Cheers
Neil
11 September 2006, 11:31 PM
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Yeah Neil switch the Boost control kit the other way and the light will go off.. then return it once AVC-R installed.
Depending what map sensor you have plugged in it should control the boost to 1bar max..
Simon
Depending what map sensor you have plugged in it should control the boost to 1bar max..
Simon
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