corsa and mhr boost port

[jetlag]

Are the boost port same in size at the base between these two bores. Reason I'm asking is because I have a mhr bore and may want try a corsa again and I'm hoping their the same and not one is bigger than the other. Hopefully someone can asking this.

[1man8scoots]

The mhr is wider than the corsa. You can use a mhr gasket and widen the port of the corsa to match. The bottom angle is important to flow. All of my corsa/contessa have been modified in this way. I would also port the outer wall of the boost port after the decline.

[veedubh20]

Malossi port exhaust flange is thicker n stronger.