Injector resistor selection?
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Read the manual to see if your question is answered there before posting. If you have questions about MS1/Extra or MS2/Extra or other non-B&G code configuration or tuning, please post them at http://www.msextra.com The full forum rules are here: Forum Rules, be sure to read them all regularly.
Injector resistor selection?
I am using a set of DSM 450cc injectors that are at 2.5ohm. What size resister should I get. I am currently using a 8.3ohm on each resistor, but I am having touble starting it. The car ran fine with the high imp injectors.
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MegaScott
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Resister size?
Look at the Manual-
http://www.megasquirt.info/manual/minj.htm#injresist
maybe also here-
http://www.msefi.com/viewtopic.php?t=3266
Basically make sure your TPS settings aren't putting you into flood clear mode.
S.
http://www.megasquirt.info/manual/minj.htm#injresist
maybe also here-
http://www.msefi.com/viewtopic.php?t=3266
Basically make sure your TPS settings aren't putting you into flood clear mode.
S.
Same question for me. Is the V3 require the resistors?tlivingd wrote:The manual refrences MS-1 v2.2 main board.
does V3 requre resistors for the injectors? the V3 has a flyback design to it. I do not see this refrenced in the manual or the assembly instructions of the v3 board.
any help would be appricated.
-nate
I am running 4 - 55 lb Siemens (2.35 ohm) ?
Thank you.
944 2.5 L Turbo EDIS 4 MS2
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Bernard Fife
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To control low-impedanbce injector current you can either:
- use PWM and the flyback circuit (a separate board for V2.2, built in for V3 main boards). or
- use resistors. The calculation is the same for V2.2 and V3 boards, as Scott says, use the calculator here: http://www.megasquirt.info/manual/minj.htm#injresist
Resistor calculation is not an exact science, though, and if the car won't start with the specified resistors, you may have to lower the resistance about 15% to 25%.
Lance.
- use PWM and the flyback circuit (a separate board for V2.2, built in for V3 main boards). or
- use resistors. The calculation is the same for V2.2 and V3 boards, as Scott says, use the calculator here: http://www.megasquirt.info/manual/minj.htm#injresist
Resistor calculation is not an exact science, though, and if the car won't start with the specified resistors, you may have to lower the resistance about 15% to 25%.
Lance.