Are the crx hf and crx si manifolds intake manifolds the same? I know that the hf probably has a different ecu because it is made for fuel econmy but is the manifold the same? and how much should i pay for one with injectors and throttle body?

 

id pay 30 dollars

 

look at both of them, the hf runners look like mcdonalds straws.

 

hf manifold is obviously way smaller than any other manifold.... check ebay for current prices...

 

Are they the same? No.. The HF intake manifold has way smaller runners, smaller throttle body and uses EGR. Its junk! Get your hands on a PM6 (d16a6) intake manifold.

How much to pay for a full PM6 intake setup (injectors/tbody the works) I'd say about 40-100 bucks.

Jeff

 

Is the wiring harness the same on the hf as the si and injector resistor box. I am asking this because I have a chance to buy a crx hf for $200. And I'm trying to decide if I should but it or not (front end damage). I would just like to know what I can use off of it for the mpfi swap.

 

yes, it has MPFi, so basically the same wiring as an Si, BUT it comes with dinky brakes and small hubs on the front, meaning you'll have to change those to swap the motor unless you stick w/ a d-series motor, in which you can retain the HF axles.

 

Hf manifolds are the way to go. With their straw size runners and the 30 mm throttle body. Those throttle bodies are funny. I have one in my room that I kept from a swap I did just so damn tiny.

 

30mm that souunds tiny as hell

 

a litle bigger than a golf ball