Swapped out my stainless Abarth 4 tip for a "Vintage Speed" Sports exhaust.
The blue smoke on start up is a good sign with a Shorrock means the oil feed is getting to the front and rear bearings. The reason for the smoke is that on shut-down the oil pools in the intake manifold. When you start up this excess oil is injected into the chambers along with the air/fuel mixture and is burnt off.

Quieter than the Abarth, very nice deep thrumm and breathes better for a supercharged engine.

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Andy Sparks
very cool, one popped up on the samba for sale section the other day
You can never have too many accessories on your car. 🙂