What is your opinion? (log advice)

[Hesh724]

I try to watch the wideband 50% of the time and the knock gauge the other 50% of the time when doing a pull. I get random knock events when at low boost in a higher gear. I think it is going way too rich to early. or the maf is dying? any advice would be great! 197sec to the end is a 3 to 4th gear highway pull.


Thank you,

 

[DSMN]

First thing i would do is perform a maf comp. second after that i would put in the 2g timing maps as i found that the 1g timing maps are a little aggressive. (meaning return all of your timing sliders to zero and use the direct access tables to adjust) I currently had a log that looked some what like yours. i changed the timing map lowered the boost and no knock. i then turned up the boost and tuned for fuel and was all set. for the 2g timing tables go on to dsmlinks site and search through wiki to find out about maf comp and timing tables. im by no means a tuning guru but just figured i would share what i found helped me.

 

[Hesh724]

I looked a few things up and was confused by this section of dsmwiki? could some one tell me where the airflow sliders are?

(as found on ECMtunink wiki)

"WOT


Then I do a few pulls and look at BoostEst around 5500-6000 RPM to make sure it matches with what the gauge was reading. Some deviation is expected, especially as revs increase. But more than a psi or two and I feel like I want to tweak the airflow sliders some more. You can calculate the amount to move the sliders if you understand absolute pressure and how to calculate scale factors. Otherwise, just lower the MAFComp sliders if BoostEst is above measured boost or raise MAFComp is BoostEst is lower than measured boost.

I found this too?

http://www.ecmtuning.com/wiki/2gtimingin1gecu. but it wants me to use sliders?


thank you,