HFS4 V2 vs V3.1

[Gonzo]

What are the differences between the V2 and V3.1 systems?

I see that the V2 systems are on sale, but it's not clear to me whether I'd be missing out on features on the V3.1 that I would find useful or desirable.

[Richard L]

V3.1 vs V2.

IDC pre-scaler
8 vs 3

configure pre-scaler
Jumper vs solder

flow compensation
IAT, no IAT

[FI_Rubicon]

Thank you for this. I had the same question.

[Gonzo]

Thanks Richard!