| You will want to switch back to the stock chip
If you switch to the topend of a 325i your compression will be around 8:1, which is almost ideal for boosted apps. You could run probably close to 20 psi with proper tuning with street driving reccommended at 14psi
The internal wastegate is less than ideal, switch to a tial 40+mm wastegate and you will probably pick up a few more horses
With the eta I would start at 8 pounds of boost and tune from there. |