I am getting a 2000 Si with this combination. The car has a stock P2T Ecu. My question is that will the P2T still think it is a 1.6 motor and not a 1.8? Since it is giving enough fuel and air to a 1.6 it would seem that the 1.8 would not be working at peak hp and efficiency? Anybody deal with this same issue?

 

sshud be good, but if i were u id get an obd1 conversion harness and tune it with a P28

 

Thanks for the info!

 

That is also what I would do. As far as computer control the ecu just reads the signal coming from the map sensor. The computer just adds fuel for that reading no matter what engine B-18 or B-16.