Has anyone got any stats for the Hirsch performance pack (HPP) for a 9-3 Areo 2004 conv.
I have just swapped in my sport sedan which had HPP and loved having a 6.x second car.
However, as the conv is heavier the stats will be different and I can't seem to find any - via Google - and wondered if the cost would be worth the extra vaa voom, if there is any.
Cheers Mick