Race cars in
AO Silver Member
Join Date: Oct 2007
Location: South Africa
Keep the boost at or below 0.4bar and stock internals will be fine. You'll need more fuel than OEM injectors can provide.You'll either need extra injectors into intake pipe and a small fueling only ECU to provide extra fuel when car is in boost - the OEM ECU still handles it all at off-boost situation. Or you can fit bigger injectors and map accordingly but mapping need specialist that costs money and fuel consumption suffers a bit.
I had a 146 2.0TS with extra injectors as mentioned - in highway cruising situation the car is lighter on fuel (14km/l vs 12km/l OEM), but in town it is a bit heavier on fuel (8km/l vs 9km/l) - the car made about 195bhp