Ok I have a 1990 CRX HF that I bought for my girl. We took it out the other day and she didn't like how slow it was when pulling out into traffic. I was doing some reading and found a few ideas. Here is what I was thinking of doing to give it a little more pep in it's step. - Si IM - Si Trans - Dx head - Dx header - Timing belt for Dx head - ECU? not sure I am not sure if I need to change the ECU or not. Anyone know? Well I didn't want to do a complete engine swap because I all ready have one in progress. I don't want both cars off the road at the same time. I thought this would be a good build and that I could do it in a weekend. I'm not really looking for any hand outs just some opinions and maybe an answer here or there. So what's everyones opinion?