duel point verses multiport

[pdqcrx]

I have a 1989 crx dx with duel point injection. Going to put a d16 out of a 1988 si in it. Will the horsepower difference between the intake manifolds be worth the wiring problems. Want it to run to its potential but face facts its still a d-series and I'm really just in it for the gas milage. Would I just have to wire the injectors and swap out ecu's. Tried to search it but couldn't get a hit. Thanks.

 

[tylonalsnifnfool]

Are you swapping motors or just making your 1.5 MPFI?

 

[EGProject]

Since he said hes putting a D16 in it - that he means a motor swap.

Motor will physically drop in, but wiring will need to be done for the injectors, manifold sensors and the like. I think you may also need a resistor box for the injectors, since the SI had them. Difference should be worth the work. The D16 block will allow you to do a VTEC minime swap later on, and also opens the door to boost.

 

[Silvershadow]

Performance wise:Convert over to MPFI.You'll probably notice very little in the lower rpm band.It's all in the mid to high rpm band.For real pick-up you'll need the Si tranny, but that conflicts with your next point.

pdqcrx

I'm really just in it for the gas milage.

For gas mileage:
a)MPFI Conversion will make very little difference.
Don't put in Si tranny.Will kill your MPG,but will have good acceleration.
c)Taller Narrower tires will make a bigger improvement than MPFI.
d)For the biggest jump in mileage.Put in CRX HF tranny.You'll see up to 10 MPG improvement. but your acceleration will suck.The caveat is now you can do 50mph in 1st gear like them Ferrari's.

The link to the DPFI toMPFI:
http://www.hondacivicwagon.com/board/viewtopic.php?t=79

Mini me swap can be done on the DX D15 block.