when i exelarate on the motorway around 70 i get a noise which i can only discribe as like some one hittin a bass drum, like a boom noise a little vibration then its gone? only noticed it when exelarating from speed in 6th and some times in 5th. had it remapped and a upgraded clutch. i know your not ment to floor it in top gear but thats only with revs below 2k am i right? only noticed it today. had it mapped exactly a week ago. not a fly wheel pob is it?:(

anyone any ideas??

flywheel?

When mine was mapped I got flywheel vibrations till around 2.6Krpm which is where the peak torque started to die off. Personally I'd avoid WOT till around 3Krpm in a typical remapped PD130.