Log from Duster
Austin,
Been talking on facebook, I hope you can help with my FiTech. I am new to tuning, lol. I hope I get what you need to see. I took the car around for a quick hit. I have a nicely built 340, with a peppy roller cam. I am using FiTech to control timing, because I kept getting EMI or noise on the tach wire which in turn was showing crazy numbers while idling (700 - 2500). I think I got the timing set now, and I have been messing with the crank fuel to get it to finally start consistently with out opening the throttle (to add more air). I have it set at 75 for initial shot and take out some in warmer temps (-25 @ 60F & -50 @170F).
Any way I keep getting some issue running WOT, not sure about the AFR and if I have enough in the timing set-up. Also, I can get the IAC steps to get down to <15, but it changes my WOT to about 96. I never get 100 or 99.5. I used to only get 78% so I put a new throttle cable on and adjusted, and now I get 96%?
Thanks for looking. Below is the dropbox file to my a log file. I can do more just tell me what you want (cold start, idle, cruise).
https://www.dropbox.com/sh/zxxdc4f3vflsrzy/AABU65yLlkjjpK3v7BJnFqbWa?dl=0
First thing right off. Your coolant temp reading is low. If unit reads under 170, it will continue to add afterstart fuel. Makes tuning useless.
The provided sensor is known for having issues. Fitech has offered a calibration option, but most of use use a Delco sensor. I have the part number listed and a link in the Parts and Accessories topic.
I saw that, thought my new radiator was just awesome, lol. I'm an idiot. I ordered a new one and once replaced I will let it learn for a while before taking another log file.
Austin,
Please find attached a data log file from a recent drive. I changed out the temp sensor, the sensor is 35 degrees different at operating temperature.
It feels like the car runs out of timing or something in a hard accelerate condition, falls on its face??
Hope you can give me direction, still not convinced I have the timing set right. Maybe I'm running out of timing on big end?
https://www.dropbox.com/sh/zxxdc4f3vflsrzy/AABU65yLlkjjpK3v7BJnFqbWa?dl=0
One more thing, it may not be related, but when i was adjusting my timing and had it revved to 4,000 rpm the headers started to turn cherry red hot. I always thought that was timing, or fuel not burned during power stroke and his being burned in exhaust??
Thanks again.
Cherry red headers can be a sign of retarded timing. I would double check your timing tab being the correct one.