Hi everyone,

I'm Martin from Bulgaria. I work on FILHEX, an ECU file service for tuners and workshops. I'm mostly on the software
side: we built a Windows app where you upload a read, it identifies the ECU and shows what can be done with the file.

I've been reading the forum for a while, especially the EGR/DPF and diagnostics sections, and learned a lot from the
threads about read quality and checksums. Hoping to give something back where I can.

Quick question for the experienced guys here: what's the most common problem you see with files coming back from
file services? Bad checksums, DTCs not fully cleared, something else? Curious to hear real-world experience.

Cheers,
Martin