Have changed to a D16Z6 head with a D15B7 block. And it starts up and everything with the original box but it runs like crap, could be to head pack thats broken? But when I sat in the P 28 data box as it should be, it burned up! Why did so? And how is it to drive wih the original box to this? And should i cange the injctors? I have a honda civic coupe 95