zoltan Posted May 11, 2010 Share Posted May 11, 2010 If you are using the standard EFi injectors with the standard resistor pack do you set the PWM Time Threshold to 25.4 msec, and the PWM Current Limit to 100%? The injectors are from a 3.5 EFi flapper and measure in around 4 ohms Quote Link to comment Share on other sites More sharing options...
bobtail84 Posted May 11, 2010 Share Posted May 11, 2010 If you are using the standard EFi injectors with the standard resistor pack do you set the PWM Time Threshold to 25.4 msec, and the PWM Current Limit to 100%? The injectors are from a 3.5 EFi flapper and measure in around 4 ohms zoltan, HFH and I have had a small chat about injectors and flapper injectors came up... The general opinion was to fit later hot wire injectors and save your self a lot of trouble. I'm sure HFH and others will be along to give full explanations later but it's the resistor pack that's the problem. jeff Quote Link to comment Share on other sites More sharing options...
zoltan Posted May 11, 2010 Author Share Posted May 11, 2010 Thanks. I brought home from work a manifold with a pair of SU's to hang over the ECU tonight, just so that it knows it is for the chop if it doesn't behave. Shame if they can't be used as I have now three sets of them Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted May 11, 2010 Share Posted May 11, 2010 If you are using the standard EFi injectors with the standard resistor pack do you set the PWM Time Threshold to 25.4 msec, and the PWM Current Limit to 100%? Yes, because the resistor pack makes them look like high impedance ones to the MegaSquirt. If you removed the resistor pack you'd need set PWM up. Quote Link to comment Share on other sites More sharing options...
zoltan Posted May 12, 2010 Author Share Posted May 12, 2010 Thanks, Which way is most reliable/least hassle if you already have the resistors wired in? Are they 100% fail safe of just another thing that could die at some stage? Quote Link to comment Share on other sites More sharing options...
Paul_VR6 Posted May 28, 2010 Share Posted May 28, 2010 I've never seen a resistor pack die, ever, on many vehicles. If you have them fitted, leave them. One thing that I have noticed is that low impedance injectors with packs have larger dead time then when PWM'd or compared to high impedance. Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted May 29, 2010 Share Posted May 29, 2010 I've never seen a resistor pack die, ever, on many vehicles. If you have them fitted, leave them. One thing that I have noticed is that low impedance injectors with packs have larger dead time then when PWM'd or compared to high impedance. Die ? - No I agree BUT The molex plug / socket is one of the nastyest Lucas made, and is hugely prone to damp / water / connection probs if used in mud / water Nige Quote Link to comment Share on other sites More sharing options...
Paul_VR6 Posted May 29, 2010 Share Posted May 29, 2010 There's no way I can disagree with that logic! Quote Link to comment Share on other sites More sharing options...
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