I am looking into taking my set-up off of the 97 civic LX and putting it on a 91 civic si. I am curious on the turbo install but also other fitting issues. Such as will my ACT clutch fit on the hatch back? Will the greddy blue box work for at all on the 91? The sleeper is fun but being OBD2, it sucks ***** to tune. and being the 4 door does not help me in autox any! So any info on any of this or anything else you could think up would be totally helpfull. Thanks

 

Well, I know the manifold will fit for sure. Not too sure about the DP fitment though. It probably won't line up to the cat or anything at all. Charge pipes will also be a problem most likely. Not too much to worry about. Your main concern is the Bluebox. Ditch it and get something else. Other than that, I'm sure you're set to go...both cars are single cam right? so looks like you shouldn't have much of a problem. Good Luck!

 

blue box wont work. and you'll have to rearrange the charge piping a little. besides that everything fits fine.