EvoScan EvoX Datalogger now supports 2byte Boost/Load/IPW
Aug 7, 2009 | 12:44 AM
#106
Evolving Member
Joined: Jun 2007
Posts: 109
Likes: 0
From: New Zealand
Thanks man! Bumping .5 psi down low should be pretty safe as a temporary test, just log your knock counts before testing the peak torque boost level more than once.
It's totally bizarre as sometimes I can get it to read a little higher as well depending on how warm the car is, possibly "sensor drift" based on it's temperature where my max is anywhere between 26.6 and 27.0 psi. I'll test to see if my second boost controller that I normally have set to a lower boost also hits a "brick wall" in adjustment and see what kind of boost spike a restrictor line to the Forge WGA induces and if it makes any difference as well.
It's not the end of the world as normally I won't run higher boost on pump gas but running mostly blind on race gas is still uncomfortable.
It's totally bizarre as sometimes I can get it to read a little higher as well depending on how warm the car is, possibly "sensor drift" based on it's temperature where my max is anywhere between 26.6 and 27.0 psi. I'll test to see if my second boost controller that I normally have set to a lower boost also hits a "brick wall" in adjustment and see what kind of boost spike a restrictor line to the Forge WGA induces and if it makes any difference as well.
It's not the end of the world as normally I won't run higher boost on pump gas but running mostly blind on race gas is still uncomfortable.
) but my evoscan wont show the data logs in my Saveddatalogs folder.If you can point me in the right direction to get those showing up then ill tell you
But it was over 1.83475 bar (26.97psi)
Aug 7, 2009 | 08:12 AM
#107
Well they should be under this path:
C:\Program Files\EvoScan\EvoScan v2.6 Beta99\SavedDataLogs\
It appears that each version of the Evoscan Beta software is now creating a new base folder so look around using explorer or do a search for all "SavedDataLogs" folders. You could also do a search for the specific file, by default they all start with "EvoScanDataLog" and then the "_2009.08.06_timestamp" is a date and timestamp format.
Likely you were over your previous boost levels if your boost gauge indicated higher than normal boost, but we'll need to prove what the logs said in the raw CSV excel files to learn anything about the EvoScan logging limits of boost.
Aug 7, 2009 | 08:33 AM
#108
Another possibility just crossed my mind. I had been told that the Evo 10 MAP sensor is exactly the same as the JDM Evo 9 MAP sensor, but perhaps its not. If it were a 2.5 bar MAP sensor instead of a 3 bar MAP sensor, then according to my calculations, the max boost level that it could measure would be 26.75 psi. Looks to be pretty much what you are measuring. Can you post the part number on your MAP sensor?
1865A052
3
The rest of the numbers didn't seem important but I wrote them down anyways. After a quick google search it does in fact appear to be a 3 bar MAP sensor so something else is either limiting the output enroute to the ECU or the ECU itself is capping the value somehow. I may follow the wiring path and see what kind of resistors or other electronic gadgets are inline before it reaches the ECU.
Aug 7, 2009 | 10:04 AM
#109
EvoM Guru
iTrader: (50)
Joined: Mar 2006
Posts: 9,675
Likes: 130
From: Tri-Cities, WA // Portland, OR
Ok here is the part number off the MAP sensor:
1865A052
3
The rest of the numbers didn't seem important but I wrote them down anyways. After a quick google search it does in fact appear to be a 3 bar MAP sensor so something else is either limiting the output enroute to the ECU or the ECU itself is capping the value somehow. I may follow the wiring path and see what kind of resistors or other electronic gadgets are inline before it reaches the ECU.
1865A052
3
The rest of the numbers didn't seem important but I wrote them down anyways. After a quick google search it does in fact appear to be a 3 bar MAP sensor so something else is either limiting the output enroute to the ECU or the ECU itself is capping the value somehow. I may follow the wiring path and see what kind of resistors or other electronic gadgets are inline before it reaches the ECU.
Aug 7, 2009 | 10:30 AM
#110
Ok, I'll see if I can perform this test. In the mean time I'm going to look into a new boost gauge that will read to 35 psi and be accurate within .5 psi if possible. Thanks for helping how to figure what is going on here and hopefully I saved someone engine damage if they were assuming the logged boost numbers weren't clipped somehow!
Aug 7, 2009 | 02:42 PM
#112
Big Oooooops!
Ok guys this will get a laugh or two...
I found the issue, and it was between the steering wheel and the recaro seat!
Turns out the potentiometer that I placed between the sensor and ecu as an experiment about 8 months ago was limiting the outout voltage even though it was zeroed out! As soon as I sent the signal directly to the ECU my logs now read 29.9-30.0 psi peak at 4500 rpms, basically dead on to what I thought they might be!
I guess we are all capable of making mistakes once in a while, sorry for the false alarm!
Now to run some 11's at the track in this perfect boost friendly weather!
I found the issue, and it was between the steering wheel and the recaro seat!
Turns out the potentiometer that I placed between the sensor and ecu as an experiment about 8 months ago was limiting the outout voltage even though it was zeroed out! As soon as I sent the signal directly to the ECU my logs now read 29.9-30.0 psi peak at 4500 rpms, basically dead on to what I thought they might be!
I guess we are all capable of making mistakes once in a while, sorry for the false alarm!
Now to run some 11's at the track in this perfect boost friendly weather!
Last edited by Hiboost; Aug 7, 2009 at 02:45 PM.
Feb 3, 2010 | 07:19 PM
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