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...and came back with one of these! (Sadly, my engine bay is in need of a severe clean so not the most pretty picture )

Doug was selling his and I snapped at the chance of buying it. I honestly only bought it due to the novelty factor of the noise, as I know the performance gains can be negligible and OMG, it does not disappoint. I've had the biggest grin on my face the last 2 days and like a lot of people say, it's very addicting as well as hard on the MPG heh.

Will most probably take another trip down to MRC soon, to get some heat shielding put in and also get it on the dyno, as there seems to be a slight hesitation when changing gears, during "spirited" driving. Overall though, I think I may like the GruppeM more than the Milltek at the moment.

The GruppeM noise is epic!! Unfortunately like many of us you will just have to live with some form of hesitation somewhere in the rev range. It's the cost of owning a GruppeM and yes the performance gain is negligible. In my case it was zero, so I changed to an MRC filter and have the GruppeM in the basement for when I want to grin like an idiot!