leecavturbo

yes i have searched but can't find exactly how.
i want to use an apexi map sensor with a jdm e8 that doesn't have a map sensor oem.
so i need ecu pin number connections and what rom/xml entry's are needed?
TIA
my rom id is 96260009 3 plug ecu
SOLVED POSTS #6 & 7

ziad

iTrader: (1)

https://www.evolutionm.net/forums/ec...ing-boost.html

leecavturbo

thx almost there but not quite.
not sure if my 3plug ecu is the same as the pin 73 mentioned?
i sure my rom will need some addition for this to work
and when john said log mut38 what does that mean?

ziad

iTrader: (1)

looking at the connectors (8gsr and 8mr) the spare connectors are 73/74. which correspond to mut38/39. both a 5V inputs.

so connect the wire to pin 73 and log via mut 38. the formula i use is (x*0.17573)-14.5

edit to check.. just hook up some wire giving voltage below 1 (maybe via resistor) or as i did check the voltage via multimeter on the blue wire. then log mut to see if you get a value bigger than 0

leecavturbo

leecavturbo

result today
logging on jdm 3 plug ecu
LC1 wideband on pin 73 mut 3c
Apexi map sensor pin 93 mut 39

Display="LC1 Afr" LogReference="LC1 Afr" RequestID="3C" Eval="7.35+(22.39-7.35)*x/255" Unit="a/f ratio" MetricEval="" MetricUnit="" ResponseBytes="1" GaugeMin="10" GaugeMax="16" ChartMin="10" ChartMax="16" ScalingFactor="1"

.

Display="Boost Apexi pin93" LogReference="Boost" RequestID="39" Eval="0.19347*x-14.7" Unit="psig" MetricEval="" MetricUnit="" ResponseBytes="1" GaugeMin="-15" GaugeMax="30" ChartMin="-15" ChartMax="30" ScalingFactor="1"

the reading in evoscan is a little lower than shown on my apexi which i hope to scale today
i.e 1.05 bar on the apexi showed 11.2 psi in evoscan

will try ziad's suggestion of 0.17573

leecavturbo

and finally all scaled exactly
Display="Boost Apexi pin93" LogReference="Boost" RequestID="39" Eval="(0.18375*x-14.7)*1.47" Unit="psig" MetricEval="" MetricUnit="" ResponseBytes="1" GaugeMin="-15" GaugeMax="30" ChartMin="-15" ChartMax="30" ScalingFactor="1"

2005Evo8

Can this be done on the USDM Evo ecu?

leecavturbo

yes its well documented for usdm

french

Does this allow the use of PSI based boost tuning (providing that a JDM or OMNI MAP sensor is used) and does it allow the use of the AFR safety feature in tephra roms.

I am a JDM Evo 8 owner and info like this is hard to come by. Its almost like we need a separate sub section.

aqeelrizni

Bump! Almost 8 years later. Anyone done this recently? On the jdm 3 plug evo viii?