Tunerpro Error while Running. EMI?
Posted: 2023 Apr 25, 11:07
I'm having an issue where Tunerpro RT will start getting connection errors shortly after starting the engine. When this happens the dashboard freezes and datalog data is all flat lines.
A short description of the car/setup: it's a 94 Mustang with EECV, modified stock harnesses, and coil near plug. Since it only occurs after the engine is running I am thinking EMI noise.
Thinks I have done or checked:
A short description of the car/setup: it's a 94 Mustang with EECV, modified stock harnesses, and coil near plug. Since it only occurs after the engine is running I am thinking EMI noise.
Thinks I have done or checked:
- Used stock harnesses in attempt to keep stock powers and grounds
- Coil powers used from a stock 4.6L harness, so it has the ignition capacitor connected to ground
- Tried every USB cable I own, with and without ferrite bead and different lengths. I have ordered a high quality one to try next
- Tested with coil power directly connected to battery ie not through harness or on ECU powers
- Tested with extra ground from engine to chassis
- Tested with alternator disabled
- Confirmed EECV grounds and case ground
- Cam sync and crank position wiring is twisted pair with shielding connected to ground at ECU end
- Latest FTDI driver
- Tried multiple driver latency values
- Tried several different ADX files, but all released ones from Decipha
- Verified Tunerpro settings match "Getting Started" writeup
- Car is mainly a racecar so a lot of wiring and components have been removed (HVAC, radio, air bags, etc)