Originally Posted by martysmartie

If only Tabetha could see this thread

A lot of tuners can NOT map greys properly which is what leads to over fueling, Siemens are newer and are supposed to have a better spray pattern.

Imo it's best to go with a set of Siemens 55, simply adding bigger injectors will not give you more power though

Do you still have a T3 turbo?

Martin