Another few questions since we are talking about 300bhp mark.
What would you recommend a walbro 225 pum or a walbro 255 pump?
What is needed to be upgraded to reach the 400bhp limit?
Another question which everyone seems to be confused about is what is the rough limit off the stock internals of an AGU, I was dictated:
1.8T engine limits
About reving: VAG thinks that the safest is 6800 and at 7250 gives 1% more possibilities for damage. Also at 7500 25% and at 7800 75% (stock head, valves, springs etc
Rods: Keep the torque lower than 400-420Nm, and keep boost lower than 1.4bar below 3000RPM
Pistons: They can hold around 450hp and the maximum working EGT @ manifold is 1030*C
In another thread I see you mention upgrading shells, what are these shells you speak off?