I recently fitted Bailey Piston type dump valve (Atmospheric).
I think I now have a slight fueling issue.

On investigation Bailey have two models, DV24 & DV26, the latter being ironically called the "EVO". Pictures show them to look identical, but the DV26 is specifically for cars with MAF sensors fitted before the turbo.

I can see no markings other than the Bailey logo on the casing.

Can anyone advise me how I can tell if I have the DV26 - "EVO" model please? I am removing same till I know.

Steve_F