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Old Sep 3, 2011 | 11:24 AM
  #1  
benderrodriguez's Avatar
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From: Starkville
Backwards Load

For some reason my load is going down when I rev the engine in neutral. See log attached. I also noticed the map sensor is also working backwards (more pressure is reading more vaccuum)

Is there a way to see the straight map sensor voltage from the ecu with evoscan to compare with a multimeter?

Thoughts, ideas?

Even more odd IPW is the same yet duty cycle goes up



If its helpfull

I'm using T-mod7 SD with an AEM5Bar sensor
Attached Thumbnails Backwards Load-untitled.jpg  

Last edited by benderrodriguez; Sep 3, 2011 at 11:32 AM.
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Old Sep 4, 2011 | 11:03 PM
  #2  
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well load is going down because your map sensor is showing more vacuum.

thats with SD anyways - which you are running

if you turn off some of those loggings you will see whats going on a bit more accuratly..

just log rpm, tps and 5_bar - that should give you a better picture of whats going on...
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Old Sep 5, 2011 | 06:47 AM
  #3  
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Originally Posted by tephra
well load is going down because your map sensor is showing more vacuum.

thats with SD anyways - which you are running

if you turn off some of those loggings you will see whats going on a bit more accuratly..

just log rpm, tps and 5_bar - that should give you a better picture of whats going on...
Well 2 follow up questions.

The map sensor says I'm getting more vacuum and my manual boost gauge tells a different story. For some reason those two are not going together. I have allot of other reasons to believe it's not the sensor, so i would like to see raw voltage.

Also which load (Load 11 bit4, Load1B, Load Cal, ect) is the one I should reference to my fuel timing tables.
I did allot of searching and there is allot of information it's not 100% clear but with tephra V7 It sounds like 1B Load1B (with the scale factor matching in evoscan and the rom) is the best. Can someone confirm?

I'm really scratching my head with this one, so any help would be really appreciated.

Last edited by benderrodriguez; Sep 5, 2011 at 07:37 AM.
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Old Sep 5, 2011 | 09:14 AM
  #4  
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From: Starkville
No I'm really lost. I made 1 change and remove the minimum IPW (put it back to stock)

And my loads are WAY Different!!

Take a look. I used to have loads around 15 now there around 85??? In either case the MAP sensor is working backwards than the gauge.


Attached Thumbnails Backwards Load-untitled1.jpg  

Last edited by benderrodriguez; Sep 5, 2011 at 09:21 AM.
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Old Sep 5, 2011 | 04:53 PM
  #5  
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Ok it was a bad map (corrupted file) Now it's just a matter of fuel tunning. Proper scaling

Last edited by benderrodriguez; Sep 5, 2011 at 07:17 PM.
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