Hitting low load during spool
Sep 28, 2011, 01:50 PM
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Hitting low load during spool
I'm currently setting up V7 in psi-based mod.
I found the curve i want using wgdc table. But in fourth gear it started to hit low load during spool. So i dropped down a little wgdc and it seemed to be better. Last night i tweaked a little Air\fuel ratio and everything was ok. This morning i did another log in 3gear and i hit low load during those, car kicked then ok then rekicked.
Here is the screenshot of the log. As you can see, no knock. What can it be? I need some help!
I found the curve i want using wgdc table. But in fourth gear it started to hit low load during spool. So i dropped down a little wgdc and it seemed to be better. Last night i tweaked a little Air\fuel ratio and everything was ok. This morning i did another log in 3gear and i hit low load during those, car kicked then ok then rekicked.
Here is the screenshot of the log. As you can see, no knock. What can it be? I need some help!
Sep 29, 2011, 12:15 AM
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You probably need to increase your "2byte to 1byte load factor". It's 1.2 by default on Tephra ROMs. Bump it up to 1.3 and try again. You also need to modify the 1byte load function in evoscan.
Sep 29, 2011, 01:58 PM
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No, it wasn't a bad load factor still did it this morning but this time it triggered knock so i backed timing one degree and the car doesn't kick anymore.
So, i'm wondering can a massive knock reduce load to almost nothing then when knock is corrected get back to normal?
So, i'm wondering can a massive knock reduce load to almost nothing then when knock is corrected get back to normal?
Oct 1, 2011, 06:53 PM
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Problem solved! In fact V7 is scaled for a gm 4 bar map sensor, since i've got a jdm 3bar, the ecu was reading a voltage higher than what it was supposed to.
So the ecu read an overboost so it was fuel cutting which gave low load.
Low load= bad timing so it triggered knock.
Simply had to change scaling in ecuflash and everything went back to normal.
So the ecu read an overboost so it was fuel cutting which gave low load.
Low load= bad timing so it triggered knock.
Simply had to change scaling in ecuflash and everything went back to normal.
