Machining the throttle bodies on the F 355 is necessary for significant power increases. Larger flaps are used and, above all, the geometry is significantly improved. The reason why Ferrari used this performance-inhibiting version is the more sensitive response in the lowest load range.
This modification is only recommended if you can tune the car afterwards.
These versions are used in our 495 hp engines.
We normally have a complete set in stock, but we only send them out as soon as we have received original parts.