Alright I'm pretty new to the honda scene. I own a 91 sedan dx. It is currently all stock. I just have a few questions. I've done some research and I know I want to swap out my d15 for a b16 when it finally dies. But I was wondering would it be worth it right now to do the dpfi to mpfi conversion and the obd0 to obd1 conversion before it dies or just do it all at once with the engine swap?

 

If you're waiting for your current d15 to die, then no it's not worth it. In addition to the wiring you'll also be replacing your entire intake manifold and injectors. It seems like throwing away money if you're going to replace everything with a b16 down the road.

I suggest doing it all at once, it'll be somewhat easier when you have everything apart and accessible.

 

Awesome. That's kinda what I was thinking. But in the other hand my d15 has just under 240k miles on it. From what I've seen most honda engines will make it past 300k sometimes 400k as long as it's being taken care of.