Hey guys i just baught a 91 Crx Dx and i have a motor i baught a b16 sir 1 and i baught a crx si ecu pm6 and i was wondering for the swap do i need the si harness because the dx one is multi port injection and all i wanted to no is that do i need the si harness would it help me and save me money insted of hassport or other places. thats all thanks

 

The dx is DPFI not MPFI.

 

did the owner before u change it to mpfi? cuz like pincone said, they were dualpoint. im not a crx owner but its the same with a dxcivic hatch, its dualpoint
isnt it only Hf and Si that came mpfi..??

 

Yea only the HF and SI were MPFI.

 

his post is really hard to read

 

Use your stock wiring harness and do the MPFI convertion. Good luck running vtec of a PM6 tho haha. You ned a OBD0 Vtec ECU, or do OBD1 and go from there.

 

dx is dual point, you cant have a multipoint on a dual point engine....

anyways to answer your question it is a very good idea to get a si or hf tranny it would save you alot of time wiring, for it comes straight off a multi point car.

You do how ever have the option to wire your car from dpfi to mpfi, you have to add a few wires to the harness' that plug into your ecu.

http://www.norcalcrx.org/dropp...p.htm - - - Try here it has a complete swap instructions and help on how to wire you dpfi to mpfi as well as vacuum diagrams and all :D

 

ok so ill use the stock dx harness and do the multi conversion anyone have diagrams on that job and is it a pain in the ***

 

http://www.hasport.com/Tech/Wr...g.PDF

http://hybrid.honda-perf.org/t...g.htm - This one is the best one ive seen, i would ignore the zc part its all for the same purpose of changing dpfi to mpfi

http://www.norcalcrx.org/droppedcrxsi/vacuum1.htm - This is also a vacuum diagram trust me you'll most likely need unless you have them marked, but I bought a complete swap so it came with a new one, I unfortantly had to find a diagram. If you have any other questions I have some good sources, I have been doing my first B16a swap over the last week its going pretty good so far but its having trouble starting