First Drag Race Log

[MN C5]

Try some race gas and see what it does

[joecar]

Hmmm, thinking out loud...
The knock events seem to occur when the airflow starts to increase, after the RPM has dropped (on the tail of each shift).
Your actual AFR doesn't seem to lean out, ECT is low, so maybe you have upto 2 degrees too much advance at those airflow values.
IAT seems warm on first 1 or 2 knock events, but then cools down.
Can you prevent heat soak on the intake plumbing...?

[oztracktuning]

Thanks for the insight i will be looking into it.

The intake is an over radiator cai. It works good but the IAT sensor is near the hottest part of the intake. Its almost certainly not an accurate position. I wonder how it would work if i put it much earlier like in the start of the intake away from the soak. It shows high 40s but in truth the air entering the TB is probably much cooler. This would mean the higher than real intake temps would function to do what to the mixture??

Colder air than the IAT indicates would mean my VE table is corrected by IAT to add fuel when hot. Is this what happens or is there more to the story??

I wonder if it would be advisable to use torque reduction tables to pull timing out of only the shifts. Just the minimum timing of 3 degrees - rather than take it out of the main timing table??

[oztracktuning]

Here is one of the log files of my best run. It may be of value to someone.

It is of the burnout , 11.768 run and back to the pits.

Steve

[oztracktuning]

Here is a video of the last race for anyone who is interested.

http://www.oztrack.com/clubsport/sum...alsoztrack.wmv