Hey guys! I’m a little new to owning a civic. I recently purchased a 2000 Honda Civic Ex w/ D16y8 most standard from my research. But I want to setup the car up for highway since most of my surrounding area are highway. The OEM transmission simply will not do with 4.25 gears ratio.I know that there are different transmissions with longer gears in it put unsure of which one is best suited for my needs. Any information will be greatly appreciate.

(I’m willing to sell or trade transmissions if needed to find what I need. EX transmission 4.25 w/ original 293k mileage (471537.792 km) no grinding or slipping of gears , and OEM genuine Honda manual fluid is replaced as needed)

 

Keep the Y8 transmission. D series (HF and HX excluded) are not designed to be efficient at a low RPM.

 

So the HX transmission would be a better fit? Since I have do a lot of highway driving and having future plans for a turbo system?

 

No. Keep the Y8 transmission.

 

Any other way to get different gear ratio out of Y8 transmission? Custom gear ratio?