will a 90-91 crx si inside wireharness fit on a 91 dx crx. will the harnesses clip right on to fuse box etc....or will i have to get the fuse box also?

 

no because the crx si is MPFI (4 injectors) and the dx is DPFI (2 injectors) and this wiring goes through the body harness.

 

yea i know i'm converting my dx to mpfi. i already have a 90-91 motor harness on my lsvtec. and instead of messing with the dx inside wiring. i was wondering if i can just hook up a si so i dont have to convert the dx harness to mpfi. will it hook up to my fuse box etc..?

 

???

 

anyone???

 

do you mean change over the entire car's harness to an Si? if so, yeah but that is a huge job...

 

yea i want to change over the entire car harness. will i need the si fuse box? or will the dx fuse box be ok

 

i would imagine the fuse box would be the same...but if not i have both interior and under hood fuse boxes for sale from an Si... $30 shipped for both

 

The DPFI to MPFI conversion instructions available on the internet and this website are far easier than changing your entire chassis harness.
And if you've got $160 to spend, all you need to do is send Rywire the DX engine harness and the Si engine harness and you're set.

http://www.rywire.com

Just do the MPFI wiring conversion that has been done by hundreds of people, there's a reason people made instructions for it and do it so often, if it was easier to change chassis harnesses... why wouldn't people do that instead..... Don't do it.