Load fluctuations at high rpm
#22
A word of caution has been recieved about the possibility of the PVC exploding if tested to full pressure (30psi).
I am currently looking into a way to to test without plastic shards penetrating my skin.
I was thinking of using some sort of box to put in while testing...
On a side note, I ordered a UR UICP, so we will see if that resolves the load fluctautions as well.
I am currently looking into a way to to test without plastic shards penetrating my skin.
![Smilie](https://www.evolutionm.net/forums/images/smilies/smile.gif)
On a side note, I ordered a UR UICP, so we will see if that resolves the load fluctautions as well.
#26
Update : SOLVED!
First off, thanks to Jon of Cobb for steering me in the right direction, he was spot on with his analysis.
I tried testing the BOV, cleaning the MAF, different air filters, installing a UICP and nothing seemed to get rid of the fluctuations.
Adjusting the "MAP" tables to more closely match actual load seems to have solved the issue. If not solved it.... it has masked it.
Here are two logs, both on the same day taken hours apart.
Before adjusting the MAP table:
![](https://lh4.ggpht.com/_C4Ord-MWjFQ/TMSr8Bbn2oI/AAAAAAAAIYo/BnsJCWO6_v4/s800/LF%20b4%20fix.jpg)
After adjusting the MAP table:
![](https://lh6.ggpht.com/_C4Ord-MWjFQ/TMSr8flklaI/AAAAAAAAIYs/MTtOY9kl_Fs/s800/LF%20Fixed.jpg)
I would also like to thank Tephra and Bryan for making the definitions available and correcting my scaling. Also thanks go to Kris, if he wasn't bald before, he probably is now:bowlol:
Jon/Bryan/Tephra,
I do have a few questions though....
1. I notice that my MAP tables were stock before, so how come this isn't a more frequent issue on these boards?
2. By adjusting the MAP table to reflect actual load, does this in anyway affect any of my logs to which some of the metrics would be inaccurate?
3. Is there any side effects from making this adjustment? In my case the car feels exactly the same, just much smoother load logs:godance:
Thanks again everybody!
First off, thanks to Jon of Cobb for steering me in the right direction, he was spot on with his analysis.
I tried testing the BOV, cleaning the MAF, different air filters, installing a UICP and nothing seemed to get rid of the fluctuations.
Adjusting the "MAP" tables to more closely match actual load seems to have solved the issue. If not solved it.... it has masked it.
Here are two logs, both on the same day taken hours apart.
Before adjusting the MAP table:
![](https://lh4.ggpht.com/_C4Ord-MWjFQ/TMSr8Bbn2oI/AAAAAAAAIYo/BnsJCWO6_v4/s800/LF%20b4%20fix.jpg)
After adjusting the MAP table:
![](https://lh6.ggpht.com/_C4Ord-MWjFQ/TMSr8flklaI/AAAAAAAAIYs/MTtOY9kl_Fs/s800/LF%20Fixed.jpg)
I would also like to thank Tephra and Bryan for making the definitions available and correcting my scaling. Also thanks go to Kris, if he wasn't bald before, he probably is now:bowlol:
Jon/Bryan/Tephra,
I do have a few questions though....
1. I notice that my MAP tables were stock before, so how come this isn't a more frequent issue on these boards?
2. By adjusting the MAP table to reflect actual load, does this in anyway affect any of my logs to which some of the metrics would be inaccurate?
3. Is there any side effects from making this adjustment? In my case the car feels exactly the same, just much smoother load logs:godance:
Thanks again everybody!
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