I have recently installed D17A2 in my civic 2004 prosmatic, initially it was showing engine light if rpm goes over 3.5 on single vetc installed, then mechanic installed dual vtec in it but recently I have noticed it's very slow in hilly area.
Before I had D15B in my civic exi and it was very good in hilly area but this one is very slow.
Any body know the reason ?
Thanks