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MHD —> EcuTek Sending Info to Tuner Help

mkvkevv

Member
First Name
Kevin
Joined
May 19, 2026
Threads
2
Messages
7
Reaction score
3
Location
Florida
Car(s)
2025 Toyota GR Supra
Currently looking for help on sending my vehicle info to tuner via EcuTek’s Phone app.

I was on an MHD tune and have flashed the car back to stock. Made an account on EcuTek, got my dongle from CSG, registered with Zach, and I can’t send him the vehicle info because I get this error below stating “OBD error: general reject”. I’ve done the basic flashing protocols (headlights off, A/C off, doors closed, etc.) and even used a battery tender (CTEK) while doing this and I am not sure what is not allowing me to send my info over. I am 100% sure the car is flashed back to stock now, however.
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