autoaddictions
Active member
Last 3 attempts to try to get some track time for some tuning ive been rained out. Ive had all kinds of gremlins on the new turbo kit and cam injectors ect. Finally tuesday night Test and Tune i made some progress. First pass was a test pass to set the trans shift points up better. I was turning 6400 rmp and theres no power up there for my cam. I wanted to shift at 5900 max. It took 2 low boost passed to set that up ( Accomplished) Next was to make sure the stall was right. Previous passes were showing 4700 stall. Im assuming the cam change is the culprit so i tried swapping out the trans fluid from Dextron to John Deere Hyguard. On a fourm members recommendation (Cloneman315). Holly crap it worked Stall was now 4100 (Accomplished).
Now on to the fuel map. I had a rich tune for the first over 20psi run to keep thing safe. It felt like i was dragging a parachute behind me down the track. Here is some data for you to chew on. At 20PSI with 16* of timing with an AFR of 9.4=1 it ran a 12.40 @ 117. With a similar 60 foot at the same boost and timing with an AFR of 11.6=1 it ran 10.63 @ 131 with a 1.61 60 ft. Hows that for a change. Air fuel map changes (Accomplished). OK so theres still about 8 degrees of timing left in the chamber plus 10 pounds of boost and i just ran my 2nd best time ever!!!! There was only time for one more pass and i had to hurry back to the staging lanes because they were closing. I didn't have time to make any timing table changes but i did add 2 pounds boost to see what would happen????????????? Results below!!!!!!
A personal best for me and i know its got more to give. I have a video but the auto focus wasn't cooperating!! I will post up later. Quality sucks but ill post it anyway.
Here is another pic of my timing map before Tuesday night I caught it just before my first run. Can you spot a problem??
Now on to the fuel map. I had a rich tune for the first over 20psi run to keep thing safe. It felt like i was dragging a parachute behind me down the track. Here is some data for you to chew on. At 20PSI with 16* of timing with an AFR of 9.4=1 it ran a 12.40 @ 117. With a similar 60 foot at the same boost and timing with an AFR of 11.6=1 it ran 10.63 @ 131 with a 1.61 60 ft. Hows that for a change. Air fuel map changes (Accomplished). OK so theres still about 8 degrees of timing left in the chamber plus 10 pounds of boost and i just ran my 2nd best time ever!!!! There was only time for one more pass and i had to hurry back to the staging lanes because they were closing. I didn't have time to make any timing table changes but i did add 2 pounds boost to see what would happen????????????? Results below!!!!!!
A personal best for me and i know its got more to give. I have a video but the auto focus wasn't cooperating!! I will post up later. Quality sucks but ill post it anyway.
Here is another pic of my timing map before Tuesday night I caught it just before my first run. Can you spot a problem??
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