Power FC Updated Half Bridge PFC Maps
Thread Starter
BDC Motorsports
Joined: Jun 2002
Posts: 3,667
Likes: 6
From: Grand Prairie, TX
Updated Half Bridge PFC Maps
Hey guys, I updated the few half-bridge maps, zipped 'em up, and put 'em up on the website. They're new sets of IGL curves for the half-bridge setups. No changes to any of the other maps.
http://bdc.cyberosity.com/v/Technica...d/PowerFCMaps/
File is BaseMaps_Jan 07 2009.
B
http://bdc.cyberosity.com/v/Technica...d/PowerFCMaps/
File is BaseMaps_Jan 07 2009.
B
did you just add a little timing under low load?
another question. I am looking at your 550/1680 HBP map. You have the idle set to like 1400. Since the PFC likes to ignore the timing map at idle, what actual timing values are you logging with this setup at idle? and how much bypass air (through the air adjust screw etc) does it need to idle stably?
and another tangentially related question: since rotary motors with lots of overlap (bridge port etc) seem to need lots of timing under low load and much less timing under high load, does that principle apply to turbo piston engines with aggressive cams? i may be helping my friend tune his Vr-4 with big cams
another question. I am looking at your 550/1680 HBP map. You have the idle set to like 1400. Since the PFC likes to ignore the timing map at idle, what actual timing values are you logging with this setup at idle? and how much bypass air (through the air adjust screw etc) does it need to idle stably?
and another tangentially related question: since rotary motors with lots of overlap (bridge port etc) seem to need lots of timing under low load and much less timing under high load, does that principle apply to turbo piston engines with aggressive cams? i may be helping my friend tune his Vr-4 with big cams
Thread Starter
BDC Motorsports
Joined: Jun 2002
Posts: 3,667
Likes: 6
From: Grand Prairie, TX
did you just add a little timing under low load?
another question. I am looking at your 550/1680 HBP map. You have the idle set to like 1400. Since the PFC likes to ignore the timing map at idle, what actual timing values are you logging with this setup at idle? and how much bypass air (through the air adjust screw etc) does it need to idle stably?
and another tangentially related question: since rotary motors with lots of overlap (bridge port etc) seem to need lots of timing under low load and much less timing under high load, does that principle apply to turbo piston engines with aggressive cams? i may be helping my friend tune his Vr-4 with big cams
another question. I am looking at your 550/1680 HBP map. You have the idle set to like 1400. Since the PFC likes to ignore the timing map at idle, what actual timing values are you logging with this setup at idle? and how much bypass air (through the air adjust screw etc) does it need to idle stably?
and another tangentially related question: since rotary motors with lots of overlap (bridge port etc) seem to need lots of timing under low load and much less timing under high load, does that principle apply to turbo piston engines with aggressive cams? i may be helping my friend tune his Vr-4 with big cams
At idle I think the PFC is still trying to idle it at 5*BTDC or something to that effect. The HBP engine seems to like about 32-33*BTDC at idle at 1200-1400rpm.
I would say the same principle applies, yes.
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