Thursday, February 3rd, 2011 AT 6:16 PM
I bought the car used. Recently i've found out engine was a D15b. Original engine was supposed to be D15Z4. Specs for D15b shows far better performance than the stock engine. However it cannot unleash its full potential because its ECU is the stock for lxi model(i think). What are the things I need to change or do in the car so it can perform the way it should?