How old is your car? Face lift? If it is not then this seems about right to me. The pulley is obviously doing most of the work for you, plugs are stopping detonation ( i presume they are colder ones). The BHP figure seems ver close to the standard works figure for a pre-face lift car. I think this goes some way to answering my initial question about ecu upgrades, thank you, although what i am now doing is looking at the throttle resonse and wondering wether an ecu upgrade would improve that in the part to mid throttle openings. For reference to other people who have not fitted colder plugs, (my own personal experience has been) with the standard plugs my cars ecu would retard the ignition, this would then reduce performance. With colder plugs this dosen't happen although i am not sure if it has taken a small something away from the resonsiveness of the accelerator in the low to middle rev range. I am now wondering if the fuel mixture needs to be slightly weakend at this point. |