Map Voltage Values vs TE MAP headings
#1
Map Voltage Values vs TE MAP headings
Im running zietronix WB w/ logger and was wondering what MAP voltages coresponded to what TE MAP headings. I realize it only matters what the ECU internal voltage reading is but i want to make sure im editing the correct columns.
#2
Re:Map Voltage Values vs TE MAP headings
Thats kinda a crap shoot w/o datalogging a map trace.
Ive noticed this with Hdata, Uber, CROME and TE.
I find that by idling the car and finding w/ columns effects idle the most vs what your boost/vacuum reads is a good way. Also, editing a boost column to a gross degree and then seeing at what psi reading it shows up on the WB works as well. All in all Ive notice that the MAP sensor reads lower than what my boost/vacuum gauge shows. But thats just my gauge. I think everyone knows that Autometers vary from gauge to gauge. Ive had 2 Autometer hooked up at the same time and there was a 2" vacuum difference.
HTH's
Dave
Ive noticed this with Hdata, Uber, CROME and TE.
I find that by idling the car and finding w/ columns effects idle the most vs what your boost/vacuum reads is a good way. Also, editing a boost column to a gross degree and then seeing at what psi reading it shows up on the WB works as well. All in all Ive notice that the MAP sensor reads lower than what my boost/vacuum gauge shows. But thats just my gauge. I think everyone knows that Autometers vary from gauge to gauge. Ive had 2 Autometer hooked up at the same time and there was a 2" vacuum difference.
HTH's
Dave
#3
Re:Map Voltage Values vs TE MAP headings
Originally Posted by 88b16civic
Im running zietronix WB w/ logger and was wondering what MAP voltages coresponded to what TE MAP headings. I realize it only matters what the ECU internal voltage reading is but i want to make sure im editing the correct columns.
I have found this brings varied results in partial throttle boosting as well. I can see my guage cross the threshold with AFRs in the 14.0 - 14.5 range unless I put the pedal down so Im at WOT.
Closed loop disable would be nice...afraid it's a ways away though.
#4
Re:Map Voltage Values vs TE MAP headings
Originally Posted by xenocron
Originally Posted by 88b16civic
Im running zietronix WB w/ logger and was wondering what MAP voltages coresponded to what TE MAP headings. I realize it only matters what the ECU internal voltage reading is but i want to make sure im editing the correct columns.
I have found this brings varied results in partial throttle boosting as well. I can see my guage cross the threshold with AFRs in the 14.0 - 14.5 range unless I put the pedal down so Im at WOT.
Closed loop disable would be nice...afraid it's a ways away though.
i dont know if this is just me or actually something thats happening but thats what it seems like.
#5
Re:Map Voltage Values vs TE MAP headings
Luckily, in the car I was tuning, the autometer boost gage seemed to match up witht the columns i was making changes in, but when i looked at the map voltage output vs boost in xenocrons Tuning excel file, the map voltage coresponded to only like 3 lbs not 6 lbs like the gage said
The cars tuned now but did notice how much easier it was to tune when the ECU threw a CEL for the O2. Night and Day. The CEL would go on for like a minute and then turn off. Is this normal for try11. Also, if i unplug the stock O2 will it go into limp or just read off the tables like it was.
The cars tuned now but did notice how much easier it was to tune when the ECU threw a CEL for the O2. Night and Day. The CEL would go on for like a minute and then turn off. Is this normal for try11. Also, if i unplug the stock O2 will it go into limp or just read off the tables like it was.
#8
Re:Map Voltage Values vs TE MAP headings
Ya know, I believe Blundar said that once. I have no reason not to believe him, but it just doesnt 'make' sense.
Only one way to find out, gonna throw a freaking light on it under both conditions.
Only one way to find out, gonna throw a freaking light on it under both conditions.
#9
Re:Map Voltage Values vs TE MAP headings
Another thing that i have learned through logging the map sensor Vs. a gauge is altitude effects. Boost gauges are Relative, whereas the MAP is absolute. This means that when i'm here in denver, it my boost gauge read 7.5 PSI, where my MAP sensor indicated 1331 mBar (19.5657 PSI - 14.7 atmospheric = ~4.9 PSI. Perhaps this is what happened with you 88b16civic?
Anyway, the method I used to make a datalogging table for my Techedge was take 2 readings: one a full VAC and one at ambient. Then, write an equation. (full VAC being idle, ambient being key on, engine off)
Anyway, the method I used to make a datalogging table for my Techedge was take 2 readings: one a full VAC and one at ambient. Then, write an equation. (full VAC being idle, ambient being key on, engine off)
#10
Re:Map Voltage Values vs TE MAP headings
Anyway, the method I used to make a datalogging table for my Techedge was take 2 readings: one a full VAC and one at ambient. Then, write an equation. (full VAC being idle, ambient being key on, engine off)