So ive been managing to get some test drives in lately, since chores on the property have kept me real busy for the past few months. Ive made a few changes so far. The 4l60e i have is from an astro van, so i know the torque converter isnt nearly the right one i should be running, but for now its what i got while i get a proper 07+ 4l60e built. The trans shift points were pretty messed up from the go. Not sure if those are the stock gm ones that holley generated, or what, but i would be in second instantly and by the time you know it im in third or fourth. I got the 1-2 shift nice, as it now kicks into second with good partial throttle around 2500 rpm and 20 MPH. Second to third i had stretched out way too long and now im working its way down to a shorter transition drive after drive to find the sweet spot. 3-4 I made it so that it doesnt really want to kick into fourth unless im on the highway cruising near 55/65 mph.
My tps data shows that im never really over 40%, unless im purposely trying to go fast. That data really helps narrow down where in the graphs i need to edit.
My closed loop comp is around 4-5% on a drive so im thinking its time to turn the learning down from 45% to a much lower number while i smooth out the rest by hand and just leave the CL compensation on for minor adjustments.
Im going to try and dial in the timing today. Realized i had the idle timing a bit too high at idle, and didnt leave a buffer so i think its hunting sometimes when it needs more torque at idle. Read that its not uncommon to pull 10* out of it from MBT so the engine has lots of room to get torque if accessories are turned on ect. at idle.
The engine still sounds like a sewing machine sorta but apparently thats normal with cam swaps and springs.. Is that due to the fact that the lash is set in the pushrods? If the engines eating itself, itll be a great reason to stroke it
Another thing im trying to set up is the knock sensors in the holley system. online searching for the Khz of the stock knock sensor and then tuning the sensitivity of it by the data of the knock level in the logs. Holley says it shouldnt have an audible knock unless it reads over 80%. I have the odd spot where it reads 100% but its only a blip or so and it wax while driving and i didnt hear a knock. Im assuming ill have to do this test while parked to hear properly.
I sent my warranty info to holley for the handheld.., so until i hear back ill be dragging my laptop with me everytime. Which is good for now but hoping i dont need to in the future.
Im thankful i put in seperate trans temp, oil pressure and coolant gauges!
My tps data shows that im never really over 40%, unless im purposely trying to go fast. That data really helps narrow down where in the graphs i need to edit.
My closed loop comp is around 4-5% on a drive so im thinking its time to turn the learning down from 45% to a much lower number while i smooth out the rest by hand and just leave the CL compensation on for minor adjustments.
Im going to try and dial in the timing today. Realized i had the idle timing a bit too high at idle, and didnt leave a buffer so i think its hunting sometimes when it needs more torque at idle. Read that its not uncommon to pull 10* out of it from MBT so the engine has lots of room to get torque if accessories are turned on ect. at idle.
The engine still sounds like a sewing machine sorta but apparently thats normal with cam swaps and springs.. Is that due to the fact that the lash is set in the pushrods? If the engines eating itself, itll be a great reason to stroke it
Another thing im trying to set up is the knock sensors in the holley system. online searching for the Khz of the stock knock sensor and then tuning the sensitivity of it by the data of the knock level in the logs. Holley says it shouldnt have an audible knock unless it reads over 80%. I have the odd spot where it reads 100% but its only a blip or so and it wax while driving and i didnt hear a knock. Im assuming ill have to do this test while parked to hear properly.
I sent my warranty info to holley for the handheld.., so until i hear back ill be dragging my laptop with me everytime. Which is good for now but hoping i dont need to in the future.
Im thankful i put in seperate trans temp, oil pressure and coolant gauges!
