Apexi Power FC commander Boost Control
17 April 2007, 08:16 PM
#1
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Apexi Power FC commander Boost Control
Help!
I have a copy of the RX7 english FC manual and the Boost control page is totally different from the Impreza hand held console. There appear to be 4 boost settings. Does anyone know what they stand for. Is it staged rev range or is it maximum boost based on pre-set 4 available settings?
I've shortened my wastegate arm and have set it at 1.30kg/cm + 90 on the Base Duty - Now if I lower these levels I get fuel cut - she's running very fast with smooth boost delivery to 1.3bar - but I'm worried something might snap. (PS I have a 2x TMIC + standard TD04)
-Has anyone sussed this out?
Cheers.
I have a copy of the RX7 english FC manual and the Boost control page is totally different from the Impreza hand held console. There appear to be 4 boost settings. Does anyone know what they stand for. Is it staged rev range or is it maximum boost based on pre-set 4 available settings?
I've shortened my wastegate arm and have set it at 1.30kg/cm + 90 on the Base Duty - Now if I lower these levels I get fuel cut - she's running very fast with smooth boost delivery to 1.3bar - but I'm worried something might snap. (PS I have a 2x TMIC + standard TD04)
-Has anyone sussed this out?
Cheers.
17 April 2007, 11:18 PM
#3
Scooby Regular
This if from memory...
The left column tells you the boost level (mine are 0.8, 1.0, 1.2 and 1.4 but these can be changed if you want), then there are two right hand columns, the first one is the solenoid duty cycle which basically governs how quickly you will hit your target boost. The faster you want it to hit the target (larger number), the more likely it is to overboost and then drop back. The slower you want boost to rise (lower number) obviously the more precise it will be in pulling up to your target boost level and holding there. The far right column has a number usually in the 200's which I have no clue about. It does change quite soon after you set the solenoid duty for each boost level, so I suspect it's some kind of self-learning correction factor, probably to fix it if your solenoid duty is way off for the level of boost you want.
90 duty seems a lot for 1.3 bar boost, but I suppose turbos and solenoids vary. Mine's on 70 for 1.4 bar.
The left column tells you the boost level (mine are 0.8, 1.0, 1.2 and 1.4 but these can be changed if you want), then there are two right hand columns, the first one is the solenoid duty cycle which basically governs how quickly you will hit your target boost. The faster you want it to hit the target (larger number), the more likely it is to overboost and then drop back. The slower you want boost to rise (lower number) obviously the more precise it will be in pulling up to your target boost level and holding there. The far right column has a number usually in the 200's which I have no clue about. It does change quite soon after you set the solenoid duty for each boost level, so I suspect it's some kind of self-learning correction factor, probably to fix it if your solenoid duty is way off for the level of boost you want.
90 duty seems a lot for 1.3 bar boost, but I suppose turbos and solenoids vary. Mine's on 70 for 1.4 bar.
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