Well the Jaffa has been around wales this week.
Whilst driving & overtaking hard i have noticed there is a fluttering noise around 4000 revs, sort of a pulsing flutter if you understand.
I havent noticed this before probably due to the fact the radio is on but in the land of our fathers i got no radio reception so switched it off.
I have the twintake on so was wondering if its amplifying the noise. I have the standard DV back on as i took the god awful Forge on off.
As i said i havent noticed any change in performance & no misfires or rough running