When asking for technical help at the very least let us know the version of firmware you are running.Cliff's Calibration (Mapping) Guide is a MUST READ: http://www.vemssupport.com/forum/index.php/topic,97.0.html
I have a VR sensor for my B230FK build with 170-180 ohm at 17 degree celcius. Question is --> I have a v3.8 VEMS and, i belive VEMS have some trouble with low resistance VR sensors, i am considering adding a resistor. Because i believe a 300-700 ohm sensor would be better. Both hear and read about this ....
Alright .... But even think i read something about frying the board by using low resistance VR sensor? Hope it isn't true
Quote from: MadsF on November 17, 2015, 03:04:20 pmAlright .... But even think i read something about frying the board by using low resistance VR sensor? Hope it isn't true Not true. Lm1815 can handle +-120V.It's very hard to destroy that input.
Quote from: MWfire on November 17, 2015, 03:31:22 pmQuote from: MadsF on November 17, 2015, 03:04:20 pmAlright .... But even think i read something about frying the board by using low resistance VR sensor? Hope it isn't true Not true. Lm1815 can handle +-120V.It's very hard to destroy that input.btw, what is your recomendations if I want to rev s54 10000+ rpm? remove pullup at all? now it's with 27k pullup and looses sync at about 9200 rpm
Quote from: Kamuto on November 17, 2015, 07:24:17 pmQuote from: MWfire on November 17, 2015, 03:31:22 pmQuote from: MadsF on November 17, 2015, 03:04:20 pmAlright .... But even think i read something about frying the board by using low resistance VR sensor? Hope it isn't true Not true. Lm1815 can handle +-120V.It's very hard to destroy that input.btw, what is your recomendations if I want to rev s54 10000+ rpm? remove pullup at all? now it's with 27k pullup and looses sync at about 9200 rpm I did few s54(N/A and turbo), but max rpm is 8400rpm(stock head). I always remove 27k pullup for vr sensor with multi tooth(60-2). Try that.I did few formula with engine from motorcycles, rev limit 15000rpm wasn't a problem with removed pullup.
Quote from: MWfire on November 17, 2015, 07:33:34 pmQuote from: Kamuto on November 17, 2015, 07:24:17 pmQuote from: MWfire on November 17, 2015, 03:31:22 pmQuote from: MadsF on November 17, 2015, 03:04:20 pmAlright .... But even think i read something about frying the board by using low resistance VR sensor? Hope it isn't true Not true. Lm1815 can handle +-120V.It's very hard to destroy that input.btw, what is your recomendations if I want to rev s54 10000+ rpm? remove pullup at all? now it's with 27k pullup and looses sync at about 9200 rpm I did few s54(N/A and turbo), but max rpm is 8400rpm(stock head). I always remove 27k pullup for vr sensor with multi tooth(60-2). Try that.I did few formula with engine from motorcycles, rev limit 15000rpm wasn't a problem with removed pullup.never have removed it at all with vr sensors willing to try one day