yes, you did need to splice/solder/whatever some things together.
just for clarification, when you say you have the intake, you do mean that you have the complete intake manifold, all of the sensors, and the fuel rail and injectors from the 240sx, right?
not sure what they mean by the parts you have won't work. Sounds like it would, but I don't know exactly the parts you have.
that write up that you linked to is pretty much spot on.
you aren't going to replace the truck harness with the 240 harness. Instead, you are going to cut the plugs off of the truck harness and replace them with the plugs from the 240. That's where the splicing/soldering comes from. you're also going to have to wire in the 240sx MAF as the truck one will not work.
You figure it would take at least an entire day for someone at that shop to do it. Even if they only charge 75 bucks an hour in labor, you can add up 750 bucks really quick. Add in the little extras like gaskets, and soldering and adjusting the idle and all of that, and it is really easy to add up that extra 200-300 bucks.
So 1,000 bucks is not a bad price considering the amount of work that it is going to take.
When you go to do it yourself, take note of how many hours it takes you to do it. That'll give you a better idea just how reasonable their quote really was.
my personal advice.
make sure you know what you are doing before you get in there. If you don't feel like you can pull the stock manifold off and replace it successfully, then this isn't the job for you to be doing yourself.
Take the time to remove all of the emissions before getting it back into the truck. The EGR system is the major one. It isn't really going to improve anything but it will make it much more easy to work on, less possible vacuum leaks.
Take your time and do it right. Don't just twist wires together. Solder and heat shrink them properly.
also, why are you doing this swap in the first place? What are your goals? There isn't really a significant performance improvement.
Last edited by Empire; Jul 17, 2012 at 04:01 PM.